Ta mar et 9 Ange ag eye pane WF abet e+ te somone

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julfhingiiasananaiamandananenae pane Oe Oe Rees

ee a ee Hibrary of the Huseum | |

OF

COMPARATIVE ZOOLOGY,

AT HARVARD COLLEGE, CAMBRIDGE, MASS.

Founded by private subscription, in 1861. A DARALAAL

Deposited by ALEX. AGASSIZ.

~~

if No. FSF (No. 7

New Series, No. CXXI (Vol. XXXI, Part 1). Price 10s, yd <7 APRIL, 199. sect? / / at) THE ee QUARTERLY JOURNAL MICROSCOPICAL SCIENCE.

KE. RAY LANKESTER, M.A., LL.D., F.RS.,

Honorary Fellow of Exeter College, Oxford, and Jodrell Professor of Zoology in University College, ondon ;

WITH THK CO-OPERATION OF

} _-B. KLEIN, MD., F.BS.,

Lecturer on General Anatomy and Resniplgay te the Medical School of St. Bartholomew’s Hospital, : ondon, ! AND ; ADAM SEDGWICK, M.A., F.RS., 3 ‘Fellow and Assistant-Lecturer of Trinity College, Cambridge. : WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD. ; ; } :

LONDON: J. & A. CHURCHILL, 11, NEW BURLINGTON STREET. + oy j | MDCCCXC.

4 i Adlard and Son.} [Bartholomew Close.

CONTENTS OF No. CXXI.—New Series.

MEMOIRS:

On Phymosoma varians. By Artuur E. Surrtey, M.A., Fellow and Lecturer of Christ’s College, Cambridge, and Demonstrator of Comparative Anatomy in the auanige ee Plates I, I, II, and IV) : : P :

The Spinning Apparatus of Geometric Spiders. By Cxrciz War- BURTON, B.A., Christ’s College, Cambridge. (With Plate V)

On the Structure and Functions of the Cerata or Dorsal Papille in some Nudibranchiate Mollusca. By W. A. Herpmay, D.Sc., F.L.S., Professor of Natural History in University College, Liverpool. (With Plates VI, VII, VIII, IX, and X) : . i

Further Observations on the Histology of Striped Muscle. By C. F. Marsuatt, M.B., M.Sc., late Platt Physiology Scholar in the Owens College. (With Plate XI) . 3 4 : :

On Chetobranchus, a New Genus of Oligochetous Chetopoda. By Atrrep Grpss Bourne, D.Sc.Lond., F.L.S., C.M.Z.S., Fellow of University College, London, and of the Madras University. ii Plate XII) . , 5 p -

The Presence of Ranvier’s Constrictions in the Spinal Cord of Verte- brates. By Dr. Witt1am TownsEnp Porter, of St. Louis. (With Plate XII dis) .

Proressor Birscuxi’s Experimental Imitation of Protoplasmic Movement

PAGE

29

4]

65 |

83

91

99

Price 10s,

A | JUNE, 1890.

: ray THE QUARTERLY JOURNAL

OF

MICROSCOPICAL SCIENCE.

EDITED BY

E. RAY LANKESTER, M.A., LL.D., F.RS.,

Honorary Fellow of Ezeter College, Ozford, and Jodrell Professor of Zoology in University College, ondon ;

6 IOS

WITH THK CO-OPERATION OF

E. KLEIN, M.D., F.B.S.,

Lecturer on General Anatomy and Physiology in the Medical School of St. Bartholomew's Hospital, ondon,

AND

ADAM SEDGWICK, M.A., F.RS.,

Fellow and Assistant-Lecturer of Trinity College, Cambridge.

WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD.

sa Sige coe nie

LONDON: J. & A. CHURCHILL, 11, NEW BURLINGTON STREET.

5 MDCCCXC.

of

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, 2

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Y XN

i be act

CONTENTS OF No. CXXII.—New Series.

MEMOIRS: PAGE The Embryology of a Scorpion (Euscorpius italicus). By Matcotm Lavriz, B.Sc., Falconer Fellow of Edinburgh Uni- versity. (With Plates XIII—XVIII) : 3 : - 105

On the Morphology of the Compound Eyes of Arthropods. By 8. Watasz, Fellow of the Johns ee ee ic (With Plate XIX) : : ; . - 148

‘On the Structure of a Species of Earthworm belonging to the Genus Diacheta. By Franx E. Brepparp, M.A., Prosector to the Zoological Society of London. (With Plate XX) . ; - 169

Hekaterobranchus Shrubsolii, a New Genus and Species of the Family Spionide. By FLorence Bucuanan, Student of University College. (With Plates XXI and XXII) . : = «i075

An Attempt to Classify Earthworms. By W. B. Benuam, D.Sc., Assistant to the Jodrell Professor of gic? in University ee London . . 5 . s P 201

Adlard and Son.)

: </ Vs '

New Series, No. CXXIII (Vol. X™4I, Part 3). Price 10s, |

By, ve 527 AUGUST, 1890.

THE QUARTERLY JOURNAL MICROSCOPICAL SCIENCE.

E. RAY LANKESTER, M.A., LL.D., F.B.S.,

Honorary Fellow of Exeter Ccllege, Oxford ; Jodrell Professor of Zoology in University College, London ; and Deputy Linacre Professor of Human and Comparative Anatomy in the University of Oxford.

WITH THE CO-OPERATION OF

E. KLEIN, M.D., F.B.S.,

Lecturer on General Anatomy and Physiology in the Medical School of St. Bartholomew's Hospital, London,

AND

ADAM SEDGWICK, M.A., F.B8.,

Fellow and Assistant-Lecturer of Trinity College, Cambridge.

WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD.

/ LONDON: J. & A. CHURCHILL, 11, NEW BURLINGTON STREET. MDCCCXC.

{Bartholomew Close.

CONTENTS OF No. CXXIII.—New Series.

MEMOIRS:

On the Origin of Vertebrates from Arachnids. By Witt1am Patten, Ph.D., Professor of Biology in the University of North mes Grand Forks. (With Plates XXIII and XXIV)

On the Origin of Vertebrates from a Crustacean-like Ancestor. By W. H. Gasket, M.D., F.RS. Shge Plates XXV, XXVI, XXVII, XXVIII)

The Development of the Atrial Chamber of Amphioxus. By E. Ray Langester, M.A., LL.D., F.R.S., and ArtHuR WILLEY,

Student of oa ea (With Plates XXIX, XXX, XXXI,_

XXXII)

PAGE

317

379

445

F, ?

: New Series, No. CXXIV (Vol. XXXI, Part 4). Price 10s, 2 NOVEMBER, 1890.

| / / THE

| QUARTERLY JOURNAL

| OF

‘T MICROSCOPICAL SCIENCE.

E. RAY LANKESTER, M.A., LL.D., F.BS.,

Honorary Fellow of Exeter College, Oxford ; Jodrell Professor of Zoology in University College, London ; and Deputy Linacre Professor of Human and Comparative Anatomy in the University of Oxford.

WITH THE CO-OPERATION OF

E. KLEIN, MD., F.BS.,

Lecturer on General Anatomy and Physiology in the Medical School of St. Bartholomew’s Hospital, London,

AND

ADAM SEDGWICK, M.A., F.RS.,

Fellow and Assistant-Lecturer of Trinity College, Cambridge.

WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD.

LONDON: J. & A. CHURCHILL, 11, NEW BURLINGTON STREET.

MDCCCXC.

- Adlard and Son,) (Bartholomew Close.

CONTENTS OF No. CXXIV.—New Series.

MEMOIRS :

On the Structure of a New Genus of Oligocheta (Deodrilus), and on the Presence of Anal Nephridia in Acanthodrilus. By Frank EH. Bepparp, M.A., Prosector of the Zoological Society of London. (With Plates XXXII and XXXIIIa)

Excretory Tubules in Amphioxus lanceolatus. By F. Ernest Weiss, B.Sc., F.L.S., University College, London. (With Plates XXXIV and XXXV) ‘ : 3

Studies in Mammalian Embryology. II.—The Development of the Germinal Layers of Sorex vulgaris. By A. A. W. Husrecat, LL.D., C.M.Z.8., Professor of Zoology in the University of Utrecht. (With Plates XXX VI—XLII) : :

Terminations of Nerves in the Nuclei of the Epithelial Cells of Tor- toise-shell. By Jon Berry Haycrart, M.D., D.Sc. (from the Physiological Laboratory of the i Sa of au (With Plate XLIIT) ‘ : : ;

PAGE

467

489

499

563

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Skeleton

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Ventral __ + Nerve Cord

Celom Oesophagus Dorsal blood ' vessel

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Pigmented skin of praeoral lobe

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Fig 11 Fig 13

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