148 
ZOOLOGICAL LITERATURE. 
Cyclanosteus. Dr. Gray, Proc. Zool. Soc. 1865, p. 422, has observed that 
the sternal callosities of Cyclanosteus senegalenfSis vary much with regard to 
their size and development, especially the hinder pair. One specimen is 
figured (p. 424), in which nearly the whole sternum is protected by those cal- 
losities. This is not entirely dependent on age, specimens of the same size 
showing variations in this respect. The author does not mention whether he 
has satisfied himself that these variations do not indicate sexual differences. 
On this occasion Dr. Gray states also his reasons wliy ho adopted, and still 
continues to use, the name Ileptathyra (Cope) in preference to the prior one 
of Cycloderma (Peters), adding the rectified synonymy of these species. He 
regards now the Cryptopus auhryi (Dum.) as distinct from Cyclanosteus 
frenatus (Peters), whilst Aspidochelys livinystonii (Gray) should be united 
with the latter (p. 428). 
Thalassiochclys albiventer, sp. n., Nardo, Atti Istit, Yenet. Sc., Lett, ed Art, 
ix. 1864, p. 1418, tav. 35 3 from the Adriatic. 
SAUEIA. 
Crocodilus vulydris. The Rev. S. Ilaughton has described the muscles of 
the hind leg. , Ann. & Mag. Nat. Hist. 1865, xvi. pp. 326-331, pi. 16. 
Mecistops hathyrhynchus (Cope, Proc. Ac. Nat. Sc. Philad. 1860, p. 650). 
Mr. Cope observes, This crocodile is the species identified by Dr. Gray with 
the C. intermedins. Graves 3 with the limited published material as a basis, I 
have reached a difterent conclusion.” i. c. 1865, p. 185. 
Alligator helois, sp. n.. Cope, 1. c. p. 185. Hah. ? 
Alligator lucius. Mr. A. W. Foot reports on the dissection of a male spe- 
cimen. Proc. Nat. Hist. Soc. Dublin, 1864, p. 42. 
Ileloderma horridum. Prof. Kaup has Ibund palatine and pterygoid teeth 
in a young example 3 he regards it as the type of a distinct suborder, repre- 
senting the ophidian type ” of the order, and considers it possible that the 
creature is really poisonous. Wiegm. Arch. 1865, p. 33. 
Cncmidophorus guttatus (Wiegm.). Prof. Troschel maintains its specific 
distinctness from Cn. sexlineatus, arid adds a description. He also directs at- 
tention to the fact that the oi Cnemidophorus described by Wieg- 
mann have been very superficially treated by Dum^ril and Bibron. Miiller, 
Wirbelth. Mex. p. 69. 
Lacerta brandtii, sp. n., De Pilippi, Viaggio in Persia, p. 3643 from Bas- 
minsk, near Tauris. 
Gerrhosaurus, Dr. Gray, Proc. Zool. Soc. 1865, p. 641, divides species of 
this genus thus : 1. Cordylosaurus, with O. trivittatus (Peters) = C, trivirgatus 
(Gray, 1. c. pi. 38. fig. 2) and O. subtcssellatus (Smith). 2. Fleur ostrichus, with 
O, bifasciatus (Smith). 3, Gerrhosaurus, with G. Jiavigularis, typicus, &c. 
Gm'rhosaurus robustus. A reply by Dr. Kirk to some observations of Prof. 
Peters regarding the vernacular name of this Lizard (cfr. Zool. Record, i. 
p. 110) is published in Proc. Zool. Soc. 1865, p. 228. 
Trachydosaurus' rugosus is viviparous, Kreflt, Vert, of the Lower Murray, 
p. 27. ‘ 
Cyclodus glgas is viviparous KrefTt, I, c. p. 28, 
