iv CONTENTS. 
On the Chevreulius callensis of Lacaze-Duthiers, by Joshua Alder ; 
On the Extension of certain marine Fishes to the freshwater 
Rivers of India, by T. C. Jerdon, Surgeon-Major ; On the Amphi- 
poda of the Adriatic, by Camil Heller ; on a new mode of Para- 
sitism observed in an undescribed Animal, by M. Lacaze-Duthiers; 
On the Development of the Axolotl (Stredon mexicanus vel Hum- 
boldtit), by A. Duméril; On the Multiplicity and Termination 
of the Nerves in the Mollusca, by M. Lacaze-Duthiers; On 
a new Kind of Illumination for Opaque Objects under High 
Page 
by Prof. Peters; On the Spawn of the Perch, by W. H. Ransom, 
M.D.; On the Vital Resistance of Encysted Colpode, by M. 
WietarsMennier Sccr<ccosc2<+.5.ccoodenecateeenee Oeseeee Seudasawsages 77—79 
NUMBER XCVIII. 
VIII. Conchological Gleanings. By Dr. E. von MARTENS ...... 81 
IX. Synopsis of the Genera of Vespertilionide and Noctilionide. 
Byer cd. ts: GRAY, ERS avi Lassreces escscs ssscdeseccaateancateremens 89 
X. Preliminary Account of a new Cetacean captured on the Shore 
at Buenos Ayres. By Dr. HERMANN BurmMetster. (Plate III.) ... 94 
XI. Description of some new Species of Butterflies belonging to 
the Genus Athyma in the Collection of the British Museum. By 
ArtHurR G. Burtier, F.Z.8., Assistant, Zoological Department, 
British: Musenmmitsescstcecses-+-secee papadagasonngasadnddconodgeboobeqqsoCcoOdeDES 98 
XII. Remarks on M. de Quatrefages’s ‘‘ Note on the Classification 
of the Annelides.” By E. CLAPAREDE ......200....cecceeeee sHeanoonabs 100 
XIII. On the Classification of the Annelides. By A. DE QuATRE- 
FAGES eeocesees Renae acts enenchisins acc aecias Sonia w contacto Sema eaite tomers eassecneiren 107 
_ XIV. A Synopsis of the Species of the Genus Collocalia, with 
Descriptions of new Species. By GrorcE RoperrT Gray, F.R.S., 
BD LS GOcOoet atc nenarcne tee aeaantwiis asso stis en aaucalsaidoaanassctoceetalceneacapease 118 
XV. On the Menispermacee. By Joun Miers, F.R.S., F.L.S. &c. 128 
XVI. On the Muscular Force of Insects. By Fé&L1x PLareav... 139 
XVII. Descriptions of several Species of Trichopterygide found 
by Dr. H. Schaum in various parts of North America and Brazil. 
By the Rev. A. MATTHEWS. (Plate V.) ssoccscccescecsessesesceres scoot 
“XVIII. Notice of a Japanese Pheasant. By Joun Gou tp, Ksq., 
BUR Su. Scespeesteecaspaneera sta cens smn’ seemarits steeececidenaies coseicaeeneaacete ee... 150 
New Book :—The Natural History of the Tineina, by H. T. Stainton, 
Wools VU GM ones ceive: omteoesteeGnci te tacacbicanote-secornt eer meauaee 151 
