PISCES. 
3 Pisces, 
r 
( forms, but especially in Pristis and Prhtiophorus. He believes that the 
skeleton of the azygos fins is a structure also formed primitively in a con- 
tinuous median fold, and that the dorsal rays are not out-growths from 
\ the vertebral column. 
I^Mivakt, St. George.] [See also Nature, xviii. pp. 282-284, 309-311, 
I 331-334.] 
PouCHET, G. Du Developpement du Squelette des Poissons osseux. J. 
\ de PAnat. xiv. pp. 34-100, 139-153, pis. iv.-xiii. 
Continued from op. cit. 1875 [vide Zool. Rec. xii. p. 1Q6.] The author 
makes some remarks on W. K. Parker’s “ Memoir on the Skull of the 
Salmon,” reproducing the text of a communication made by him to the 
Societe de Biologie, in 1873, for which he claims priority of date. Some 
^ of Parker’s conclusions are compared with those of the author, whose 
own results are summed up under 22 heads, pp. 145-147. 
, Retzius, G. Zur Kenntniss von dem membranosen Gehorlabyrinth bei 
den Knorpelfischen. Arch. Anat. Phys. 1878, anat. Abth. pp. 83-105, 
I pi. iv. 
I A treatise on the membranous auditory labyrinth of the Plagiostomi, 
and comparison of its structure with that of the Teleostei, previously in- 
vestigated by the author [see Zool. Rec. xii. p. 106]. 
( Sanders, A. Contributions to the Anatomy of the Central Nervous 
V System in Vertebrate Animals. Part I. — Ichthyopsida. Section i. 
I — Pisces. Subsect. i. — Teleostei. Phil. Trans. 1878, pp. 735-776, 
pis. Iviii.-lxv. 
' Commencing with the Teleostei^ the author has selected the Grey 
I Mullet {Mugil cephalus) as the species on which to base his investiga- 
, tions into the structure and homologies of the brain of fishes. With 
respect to the latter, he has come to nearly the same conclusions as Stieda, 
differing from some of Fritsch’s determinations ; it is presumed, how- 
ever, that these opinions may perhaps undergo modification when the 
Elasmobranchi and Ganoids come under consideration. 
C [On the Central Nervous System in Selachia, see Rohon, infra, 
Palceichthyes.'] 
SoLGER, B. Zur Kenntniss der Seitenorgane der Knoche'nfische. 
\ Leop. xiv. pp. 74-80. 
Vetter, B. Untersuchungen zur vergleichenden Anatomie der Kiemen 
\ und Kiefer-musculatur der Fische. ii. Theil. Jen. Z. Nat. xii. 
5 pp. 431-450, 3 pis. 
I Following upon the first part of this memoir, which dealt with the 
I Selachia^ the present treats of the muscular apparatus for the gills and 
jaws in Chimcera, Acipenser^ and the Teleostei. 
Welcker, H. Zur Lehre von Bau und Entwickelung der Wirbelsaule. 
Zool. Anz. i. pp. 291-295, 311-315. 
Discusses the subject of the numbers of the vertebrae, and increase or 
diminution as affecting homological considerations, with reference to the 
\ views of Ihering, ante. 
