Pisces ] 
PISCES. 
BY 
G. A. Boulenger. 
(Assisted by W. R. Ogilvie- Grant.) 
PHYSIOLOGICAL, ANATOMICAL, AND GENERAL. 
Balfour, F. M. On the Nature of the Organ in Adult Teleosteans and 
Ganoids, which is usually regarded as the Head-kidney or Pro- 
nephros. I Q. J. Micr. Sci. xxx. pp. 12-16. [Also Rep. Brit. Ass. li. 
P. 721.] 
Balfour’s investigations show that the pronephros, which is found in 
the larvae or embryos of almost all Ichthyopsida , except the Elasmo- 
branchii , is a purely larval organ, and never constitutes an active part of 
the excretory system in the adult state. 
A. Baume, Odontologische Forschungen (Leipzig : 1882), discusses the 
origin of the teeth of Vertebrates (pp. 17-40) ; the teeth of the Fishes 
are especially dealt with, pp. 41-52. 
r Berger, E. Beitrage zur Anatomie des Sehorganes der Fische. , Morph. 
JB. viii. pp. 97-168, pis. iv. & v. 
» Blaue, J. Uber den Bau der Nasenschleimhaut bei Fischen und 
Amphibien. Zool. Anz. v. pp. 657-660. 
> Cattie, J. T. v Recherches sur la glande pineale (Epiphysis "cerebri) 
des Plagiostomes, des Ganoides et des T61eost£eng, Arch. Biol. iii. 
pp. 101-196, pis. iv.-vi. j | 
» Day, F. On the Food of Sea Fishes. Zool. xl. p. 235. 
s Emery, C. Sur la structure des fibres musculaires strides de quelques 
Vert6br4s. Arch. Ital. Biol. ii. pp. 133 & 134. 
- Krukenberg, C. F. W. Dio Pigmente der FischliautA Vergl. physiol. 
Stud. Adria, ii. pp. 55-58, pi. iii., and pp. 138-143, pi. ix. 
R. Leuckart has a paper on Hybridism in Fishes. Arch. f. Nat. '(2) 
xlviii. pp. 309-315. 
1882. [vol. xix.] b 8 
