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Hibrary of the Museum

OF

COMPARATIVE ZOOLOGY,

AT HARVARD COLLEGE, CAMBRIDGE, MASS.

Founded by private subscription, in 1861.

Deposited by ALEX. AGASSIZ.

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New Series, No, CKXXIII (Vol. XXXIV, Part 1). Price 10s,

AUGUST, 1892.
THE

QUARTERLY JOURNAL

OF

MICROSCOPICAL SCIENCE,

EDITED BY

EK. RAY LANKESTER, M.A., LL.D., F.R.S.,

Linacre Professor of Human and Comparative Anatomy, Fellow of Merton College, and
Honorary Fellow of Exeter College, Ozford.

WITH THE CO-OPERATION OF

E. KLEIN, M.D., E.RS.,

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

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

Fellow and Lecturer of Trinity College, Cambridge ;

AND

A. MILNES MARSHALL, M.A., D.Sc., M.D., F.BS.,

Late Fellow of St. John’s College, Cambridge ; Professor in the Victoria University ; Beyer Professor of Zoology
in the Owens College, Manchester.

WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD.

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

MDCCCXCII.

Uard and Son,} (Bartholomew Close.

CONTENTS OF No. CXXXIII.—New Series.

MEMOIRS:
PAGE

The Anatomy of Pentastomum teretiusculum (Baird). By
W. Batpwin Spencer, M.A., Professor of Biology in the Uni-
versity of Melbourne. (With Plates I—IX) : : 3 1

On the Minute Structure of the Gills of Palemone tes varians.
By Encar J. Aten, B.Sc., University College, London. (With

Plate X) 75

—— ———eeEeEyEE>E——

New Series, No, CKXXIV (Vol. XXXIV, Part 2). Price iQs,
/' 7 NOVEMBER, 1892. |
THE
QUARTERLY JOURNAL
MICROSCOPICAL SCIENCE.

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

Linacre Professor of Human and Comparative Anatomy, Fellow of Merton College, and
; “ ' Honoraty Fellow of Exeter College, Oxford ;

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

Fellow and Lecturer of Trinity College, Cambridge ;

AND

A. MILNES MARSHALL, M.A., D.Sc., M.D., F.BS.,

Late Fellow of St. John’s College, Cambridge ; Professor in the Victoria University ; Beyer Professor of Zoology
in the Owens College, Manchester.

WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD.

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

MDCCCXCII.

Adlard and Son,] (Bartholomew Close.

CONTENTS OF No. CXXXIV.—New Series.

MEMOIRS:
PAGE
On the Development of the Optic Nerve of Vertebrates, and the
Choroidal Fissure of Embryonic Life. By RicHarp AssHETON,
M.A., Demonstrator of Zoology in the Owens College. (With
Plates XI & XII) . . : > . . vikeO

The Larva of Asterias vulgaris. By Grorcr W. Frexp, M.A.
(With Plates XIII, XIV,& XV) . . ° . - 105

The Development of the Genital Organs, Ovoid Gland, Axial and
Aboral Sinuses in Amphiura squamata; together with some
remarks on Ludwig’s Hemal System in this Ophiurid. By E. W.
MacBripg, B.A., B.Sc., Scholar of St. John’s College, Cambridge.
(With Plates XVI, XVII, & XVIII) : g ° - 129

A New English Genus of Aquatic Oligocheta (Sparganophilus)
belonging to the Family Rhinodrilide. By W. B. Bennam,
D.Sc.(Lond.), Aldrichian Demonstrator of Anatomy, Oxford. (With
Plates XIX & XX). 5 - a . ; « -155

| New Series, No. CKXXV (Vol. XXXIV, Part 3). Price 10s.

SD JANUARY, 1893.
jf / THE
QUARTERLY JOURNAL

OF

MICROSCOPICAL SCIENCE.

EDITED BY

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

Linacre Professor of Human and Comparative Vebaings! Fellow of one College, and
Honorary Fellow of Ezeter College, Oxford ;

WITH THE CO-OPERATION OF

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

Fellow and Lecturer of Trinity College,Cambridge ;

A. MILNES. MARSHALL, M.A., D.Sc., M.D., F.B.S.,

Late Fellow of St. John’s College, Cambridge ; Professor in the Victoria Baibabrity Bowes Professor of Zoology |
in the Owens College, Manchester.

AND

W. F. R. WELDON, M.A., F.BS.,

Jodrell Professor of eee te and Comparative Anatomy in Duiversity College, London ;
low of St. John’s College, Cambridge.

WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD.

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

MDCCCXCIII.

Adlard and Son,] [Bartholomew Close.

CONTENTS OF No. CXXXV.—New Series.

MEMOIRS:

On the Relationships and Réle of the Archoplasm during Mitosis in
the Larval Salamander. By Joun E.S. Moors, A.R.C.S. (From
the Huxley Research Laboratory, Royal Bia of Science, London.)
(With Plate XXT) ‘ :

On the Occurrence of Embryonic Fission in Cane Polyzoa.
By Srpney F. Harmer, M.A., B.Sc., Fellow of King’s College,
Cambridge, and Superintendent of the University Museum of
Zoology. (With Plates XXII, XXIII, & XXIV) .

Two New Genera and some New Species of Earthworms. By Frank
E. Bepparp, M.A., F.R.S., Prosector to the Zoological Society of
London. (With Plates XXV & XXVI)

Observations on the Gregarines of Holothurians. By E. A. Mincuty,
B.A., Assistant to the Linacre Professor of Human and Compa-
rative Anatomy, Oxford. (With Plates XX VII and XXVIII)

A New Sporozoon in Amphioxus. o E. C. Manas B.Sc. —
Plate XXIX) :

Studies on the Protochordata. By ArtHur Witery, B.Sc.Lond.,
Columbia College, New York. (With Plates XXX & XXXIT)

PAGE

181

199

243

279

311

317

JUN 14 1893

New Series, No. CKXXVI (Vol. XXXIV, Part 4). Price 10s.

: ee] APRIL, 1893.

THE

QUARTERLY JOURNAL

OF

MICROSCOPICAL SCIENCE.

EDITED BY

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

Linacre Professor of Human and Comparative Anatomy, Fellow of Merton College, and
Honorary Fellow of Exeter College, Ozford ;

WITH THE CO-OPERATION OF

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

Fellow and Lecturer of Trinity College, Cambridge ;

A. MILNES MARSHALL, M.A., D.Sc., M.D., F.RBS.,

Late Fellow of St. John’s College, Cambridge ; Professor in the Victoria University ; Beyer Professor of Zoology
in the Owens College, Manchester.

AND

- W. F. R. WELDON, M.A., E.BS.,

Jodrell Professor of Zoology and Comparative Anatomy in University College, London ;
Fellow of St. John’s College, Cambridge.

WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD.

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

MDCCCXCIII.

Adlard and Son,} (Bartholomew Close.

CONTENTS OF No. CXXXVI.—New Series.

MEMOIRS:
PAGE
Description of a New Species of Moniligaster from India. By W.
Buiaxtanp BenuamM, D.Se.Lond., Aldrichian Demonstrator of
Comparative Anatomy in the University of Oxford. (With Plate
2 OO: TL) ae : : : ‘ : : . 861

Note on a New Species of the Genus Nais. By W. Braxuanp
Beyuam, D.Sc.Lond., Aldrichian Demonstrator of Comparative
Anatomy in the University of Oxford. (With Plate XX XIII) . 383

On a New Organ in the Lycoridea, and on the Nephridium in N ereis
diversicolor, O. F. Mill. By E. 8. Goopricn, F.L.S., Assistant
to the Linacre Professor of Human and Comparative Anatomy,
Oxford. (With Plates XXXIV & XXXV) : : ~ or

Nephridia and Body-cavity of some Decapod Crustacea. By Epear
J. ALLEN, B.Sc., University College, London. (With Plates XXXVI,
XXXVIL&XXXVIII. : : , - . 403

Note on the Colom and Vascular System of Mollusca and Arthropoda.
By E. Ray Lanxester, M.A., F.R.S., Linacre Professor, Oxford . 427
Contributions to a Knowledge of British Marine Turbellaria. By F.
W. Gamste, B.Sc., Berkeley Fellow of Owens College, Manchester.

(With Plates XXXIX, XL & XLI). : 433
Pecularities in the Segmentation of certain Polychetes. By Fuo-

RENCE BucHanan, B.Sc., from the Zoological Laboratory of Uni-

versity College, London. (With Plate XLII) : : » See

REVIEW :
The Nephridia of Leeches_ . 3 : : : . 545

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