93 
Fam. DioponTip&. 
Diodon reticulatus, L. Syn: p. 193.—Erratum. Expunge in the syno- 
nyms, “Le Diodon orbe Lacepede” ; and for ‘‘ Diodon rivulatus,” 
read Diodon tigrinus. 
Fam. SquaLiID&. 
Carcharias falcipinnis, Proc. Zool. Soc. 1839, p. 90; Trans. iii. p. 18. 
This proves, as it was suspected, to be the Squalus ustus, Dum. ; 
that is, Carcharias (Prionodon) melanopterus (Q. et G.) of MM. Mil- 
ler and Henle. 
Carcharias microps, Proc. Zool. Soc. 1840, p. 38; Trans. iii. p. 18. 
This again may perhaps be found to be identical with the imper- 
fectly known Squalus obscurus, Lesueur (Carcharias (Prionodon) ob- 
scurus, Miill. et Henle), concerning which, however, the information 
hitherto afforded is too scanty to allow the immediate adoption of 
the name. Carcharias microps differs from C. P. Sorrah, Val., as 
described and figured by MM. Miiller and Henle, in the equiserrate 
teeth, the longer and narrower pectcral fins, the smaller eyes and 
shorter muzzle. It differs again from C. P. Henlei (Val.), Mill. et 
Henle, in the long and black-tipped pectoral fins. 
Fam. CrenTRINID&. 
CENTROPHORUS CALCEUS.—“‘ Sapata.” 
Acanthidium calceus, Proc. Zool. Soc. 1839, p. 92; Trans. iii. p. 19. 
Although I have not yet succeeded in obtaining the male of this 
Shark, I perfectly concur in MM. Miller and Henle’s suggestion 
(Plag. 2" Nachtr. p. 199), that it will probably prove to belong to 
their genus Centrophorus, with which I was unacquainted at the time 
of its former publication. It is however quite distinct from either of 
the species they describe. 
The other little shark, Acanthidium pusillum, nob., with which at 
that time, in expectation of MM. Miller and Henle’s work, I pre- 
ferred associating it, though not without considerable scruple, to 
forming a new genus for a single species, is I think distinct specifi- 
cally from Spinax niger (Buon.) of these authors (Sq. Spinaz, L., 
Acanthidium Spinaz, nob.), with which they* have supposed it iden- 
tical. It must retain also the name which I have given it; that of 
Spinaxr, which MM. Miller and Henle, after the Prince of Canino, 
have assigned to the same combination of characters, belonging, by 
the right of priority}, to the distinct generic group to which these 
authors have assigned the name already otherwise or in a wider 
sense employed by Risso, of Acanthias, and the type of which is the 
Squalus Acanthias, L. 
Fam. Rap. 
Torpepo picta. T. supra purpureo-fusca (sepiolina) maculis albi- 
dis reticulato-marmorata : corpore latiore quam longo, cauda abbre- 
viata multo longiore ; pinna caudali altiore quam longa ; ventralibus 
amplis, dimidio caud@ longioribus : spiraculis septem-dentatis. 
* 2°" Nachtr. p. 199. + Cuv. Rég. Anim. ii. 391, 392 
