68 University of California Publications in Zoology (Vou. 9 
SHAEFER, F. 
1902. Ueber die Schenkeldriizen der Eidechsen. Arch, Naturg., Berlin, 
48, 27-64, 2 pls. 
SHUFELDT, R. W. 
1885. Probable period of gestation in the horned toad. Science, 6, 
185-186. 
Srearns, R. E. C. 
1883. Protective coloration in Phrynosomae. Amer. Nat., 7, 1077-1078. 
STEINEGER, L. 
1890. Annotated list of reptiles and batrachians collected by Dr. C. 
Hart Merriam and party in Idaho, 1890. U.S. Dept. Agrie., 
Div. Biol. Surv., N. A. Fauna, no. 3, pp. 109-113. 
1893. Annotated list of the reptiles and batrachians collected by the 
Death Valley expedition in 1891 with descriptions of new 
species. U. 8S. Dept. Agric., Div. Biol. Surv., N. A. Fauna, 
no. 7, pp. 159-228. 
1903. The reptiles of the Huachuea Mountains, Arizona. Smithsonian 
Inst. Nation. Mus. Proe., 25, 149-158. 
1906. A new lizard of the genus Phrynosoma from Mexico. Smith- 
sonian Inst. Mus. Proe., 29, 565-567. 
STRECKER, J. K., Jr. 
1908. Notes on the breeding habits of Phrynosoma cornutum and other 
Texas lizards. Proe. Biol. Soc., Washington, D. C., 21, 165— 
170. 
THayeErR, A. H. 
1909. Concealing coloration in the animal kingdom (New York, Mac- 
millan), xix, 260, 16 pls., 140 figs. 
TowNSsEND, C. H. 
1887. Field notes on the mammals, birds and reptiles of northern Cali- 
fornia. Smithsonian Inst. Nation. Mus. Proe., 10, 139-241, 
1 pl., 4 figs. in text. 
VAN DENBURGH, J. 
18938a. Descriptions of three new lizards from California and Lower 
California with a note on Phrynosoma blainvillii. Proce. Cal. 
Acad. Sci., (2), 4, 296-301. 
1893b. Phrynosoma solaris with a note on its distribution. Jbid., 4, pp. 
1, 456. 
1895a. A review of the herpetology of Lower California. Ibid., 5, 77- 
162. 
1895b. Additional notes on the herpetology of Lower California. Ibid., 
1004-1008. 
