PHYSOSTbMI. 
105 
should arrive at the following conclusions : — 1. Arges sabalo could not he kept 
generically distinct from these fishes (as Mr. Putnam is inclined to keep it), inas- 
much as doubts might be entertained of the specific distinctness of A. sabalo and 
A. brachycephalus. 2. The adipose fin would undergo extraordinary changes 
in these fishes during their growth : in examples up to 2 inches {Stygogenes 
hmiiholdtii) it is very short, close to the caudal fin, and provided with a hard 
spine. In other examples (Mr. Putnam’s specimen ; the length is unfortunately 
not stated by Mr. Putnam) the adipose fin is moderately long, reaching to 
the base of the upper caudal ray, with a short broad spine at its front base 
buried in the skin.” Finally, in specimens from 4 to 9 inches {A. brachy- 
cephalus) the adipose fin extends from near the dorsal to the caudal, without 
a trace of hard spine. Such an extraordinary change is not without parallel 
in the class of fishes ; but we should like to see further evidence in proof of 
this case.] 
Plecostomus barbatus. Head of male and female figured by Darwin, De- 
scent of Man, ii. p. 11. 
Hypoptopoma bilobatum^ sp. n., Cope, P. Am. Phil. Soc. 1870, p. 666, fig., 
Pebas. 
Exostoma blythii. Note by Day, P. Z. S. 1871, p. 716. 
Bunocephalus aleuropsis^ sp. n.. Cope, P. Am. Phil. Soc. 1870, p. 668, 
Pebas. 
Eremophilus mutisii (Humboldt) has not been recognized by Giebel, who 
describes it as Trachypoma marmoratum (g. et sp. n.) ; the author was also 
not aware that the generic name proposed by him is preoccupied. Z. ges. 
Ntrw. 1871, iii. p. 97. 
Cyprinid^?. 
An important memoir, ^ Sur les Cyprinoides de Chine/ has 
been published by Dr. Bleeker in Verb. Akad. Amsterd. xii. 
1871, p. 91, with 15 double plates. A preliminary notice ap- 
peared last year, and was referred to in Zool. Record, vii. p. 83. 
The author gives an historical sketch of the progress of our know- 
ledge respecting this part of the Chinese fauna. Before this 
paper 60 species (the Cohitid(B not included) had been described, 
unfortunately many from Chinese drawings only; and to this 
number the author adds now 21 others, chiefly from the Yan- 
tsekiang, where the specimens were collected by Messrs. Daubry 
and the Abbd David. The Cyprinoids of China show a close 
affinity to those of J apan and Europe, whilst the forms most 
characteristic of the tropical parts of the Indian region have 
disappeared. The memoir is beautifully illustrated, apparently 
regardless of expense. 
P. Day, in a Monograph of Indian Cyprinidse,^^ characterizes 
24 known genera. J. A. S. B. 1871, p. 102. 
Catosfomns. Prof. Cope describes the following as new species (P. Am. 
Phil. Soc. 1870) : — p. 467, Placopharynx (g. n.) carinatus ; p. 470, Ftychostomus 
papillosus and velatus ; p. 471, P. collapsus and pidiensis ; p. 472, P. coregonus, 
albusj and thalassinus) p. 473, P. robustus] p. 474, P. lachrymalis ] p. 477, 
1871. [voL. VIII.] 
I 
