9 Kept . 
Titles. 
5600 
Ruthven, A. G. On Ameiva bifrontata 
Cope and Ameiva divisus Fischer. 
Michigan Occ. Pap. Mas. Zool. 2 1915 
(1-3). 169 
Ruthven, A. G. The breeding habits 
of Ilylodes cruentus Peters. Michigan 
Occ. Pap. Zool. Mus. 11 1915 (1-0) 1 pi. 
170 
Ruthven, A. G. Observations on the 
habits, eggs and young of Hyla fiihr- 
manni Peracca. Michigan Occ. Pap. 
Zool. Mus. 14 1915 (1-4) 1 pi. 171 
Ruthven, A. G. Description of a 
new subspecies of Cnemidophorus lem- 
niscatii8 Laurentv. Michigan Occ. Pap. 
Zool. Mus. 16 1915 (1-4) 1 pi. 172 
Ruthven, A. G. Description of a 
new genus and species of Lizard of the 
family Geckonidae. Michigan Occ. Pap. 
Zool. Mus. 19 1915 (1-3). 173 
Ruthven, A. G. Description of a 
new Tailless Amphibian of the family 
Dendrobatidae. Michigan Occ. Pap. 
Zooh Mus. 20 1915 (1-3). 174 
Ruthven, A. G. and Gaige, H. T. 
The Reptiles and Amphibians collected 
in .Northeastern Nevada by the Walker- 
Newcomb Expedition of the University 
of Michigan. Michigan Occ. Pap. Zool. 
Mus. 8 1915 (1-33) 5 pis. 175 
Ruthven, A. G. and Gaige, H. T. 
The breeding habits of Prostherapis 
subpunctatus Cope. Michigan Occ. Pap. 
Zool. Mus. 10 1915 (1-5) 1 pi. 176 
Saguchi, S. Ober Sekretionserschein- 
ungen an den Epidermiszellen von 
Amphibienlarven nebst Beitragen zur 
Frage nach dor physiologischen 
Degeneration der Zellen. Tokyo Mitt, 
med. Fac. 14 1915 (299-415) 4 pis. 177 
Sajovic, G. Beitn'igo zur Roptilion- 
ktindo Krains. Wien Verb. Zool. Bot. 
Ges. 64 1914 (150-175). 178 
Sans, F. Una Tortuga fosil en el 
eocenico de Gerona. Madrid Bol. Soc. 
Esp. Hist. Nat. 15 1915 (291-298). 179 
Sellards, H. E. A new Gavial from 
the late Tertiary of Florida. Amer. J. 
Sci. New Haven 40 1915 (135-138). 180 
Seri6, P. Notas sobre la erpetologia 
del Paraguay. Boll. Soc. Pliysis. Buenos 
Aires 1 1915 (573-582). 181 
Seri4, P. Description d’une variate de 
Philodryas baroni Berg. Ann. Mus. 
Nac. Buenos Aires 26 1915 (227-230) 
1 pi. 182 
Slevin, R. v. Van Denburgh, J. 
Smellie, W. R. On a new Plesiosaur 
from the Oxford Clay. Geol. Mag. (6) 
2 1915 (341-343). 183 
Smith, B. G. An experimental study of 
concrescence in the embryo of Crypto- 
branchus allegheniensis. Biol. Bull. 
Woods Hole Mkss. 26 1914 (245-261). 
184 
Smith, M. Notes on some snakes 
from Siam. Bombay J. Nat. Hist. Soc. 
23 1915 (784-789). 185 
Smith, M. The Snakes of Bangkok. 
J. Nat. Hist. Soc. Siam 1 1915 (173-185) 
pis. 186 
Smith, M. List of the Snakes at 
present known to inhabit Siam. J. Nat. 
Hist. Soc. Siam 1 1915 (211-215). 187 
Smith, M. On Reptiles and Ba- 
trachians from the Coast and Islands of 
South-East Siam. J. Nat. Hist. Soc. 
Siam 1 1915(237-249). 188 
Smith, M. On the breeding habits 
and colour changes in the Lizard Calotea 
mystaceus. J. Nat. Hist. Soc. Siam 1 
1915 (256-257). 189 
Smith, P. E. Some features in the 
development of the central nervous 
system of Desmognathv s fusca. J. 
Morph. Philadelphia 25’ 1914 (511-557). 
190 
Southoff, G. Note sur Padaptation 
au milieu cliez les Lezards de la famille 
des Lacertidae. Bordeaux Bui. soc. linn. 
68 1914 (Proc.-verb. 36-41). 191 
Stachowitz, W. Veriindorungeti in 
der Entwicklung von Amphibion- 
embryonen, die auf der Stadium der 
Medullarplatte mit Radium bestrahlt 
wurden. Arch, rnikr. Anat. Bonn. 85 
Abt. 1 1914 (521-554) pis. xxviii-xxix. 
192 
Stadtmttller, F. Ein Beitrag zur 
Kenntnis des Vorkonimens und der 
Bedeutung liyalinknorpeliger Elements 
in der Sclera des Urodelen. Anat. 
Hefte Wiesbaden 51 1914 (427-466). 
193 
Stefano, G. de. Note supra alcune 
Tartarughe Fossili della sezioni Crypto- 
dira. Atti. Soc.Ital. Pavia 54 1915 (65- 
84). 194 
