540 The American Naturalist. [June, 
Borpen, W. C.—Origin and development of -the fat-cells of the 
Frog. Microscope, IX., p. 101, 1889.—Nothing new. 
Ryper, J. A—Heterocercy in Batrachia. Proc. Phila. Acad., 
1889, p. 155.—In Amblystoma larva. 
Morean, T. H.—On the Amphibian blastopore. Studies Biol. 
Lab. J. Hopkins Univ., IV., p. 355, 1890. Forms studied were 
Bufo lustiginosus, Rana halecina, Amblystoma punctatum. : 
Hay, O. P.—On_ the structure of the skull of the larva of Am- 
puuma. Proc AA.A S, XXXVIII., p. 286, 1889.—Abstract. 
BouLENGER, G. A.—Description of a new Batrachian of the 
Genus Eupemphix from Trinidad. Ann. and Mag. N. H., IIl., p. 
307, 1889.—E. trinitatis. 
Roperts, H. L—Frogs Eating Snakes. Am. NAT, XXIIL., 
P. 74, 1889. 
Townsend, T.—Twelve species of Coleoptera taken from the 
stomachs of Toads in Michigan, with remarks on the food habits 
of Toads. , Proc. Ent. Soc., Washington, I., p. 167, 18809. 
Core, E. D—Report on the Batrachia and Reptiles collected 
[by the U. S. Fish Commission steamer Albatross] in 1887-’88, 
Proc. U. S. Nat. Mus., XII, p. 141, 1889 [1890].—Bufo agua 
from St. Lucia, W. I. 
REPTILES. 
Norturop, J. 1—Coluber obsoletus [near Newburg, N. Y.]. 
Am. Nat., XXIV. P- 82, 1890. 
Baur, G.—Osteologische Notizen über Reptilien. Zool. An- 
seiger, XIL., p. 40, 1889. 
Baur, G.—Revision meiner Mittheilungen in Zoolsgischen An- 
seiger. Zool. Anz., XII. 2 38.—Notes on osteology of various 
reptiles. 
GARMAN, S. W.—On the evolution of the Rattlesnake. Proc. 
Bost. Socy., XXIV., p. 170, 1889.—Moulting of snakes and 
rattle-like structures in other snakes. 
Baur, G.—Die systematische Stellung von Dermochelys. Biol. 
Centralbl., IX., 149, 180, 1889.—Dermochelys [Sphagris] is not a 
primitive form, but has descended from the “ Thecaphora ” and 
probably from the “ Pinnata.” 
