30. PHYLLORHYNCHUS 



me that two others, males, were taken together at night, 

 July 24, 1916, at the San Xavier Mission, near Tucson, 

 Arizona. 



154. Phyllorhynchus decurtatus (Cope) 



Lower California Leaf-nosed Snake 



Plate 72 



Phimothyra decurtata Cope, Proc. Acad. Nat. Sci. Phila., i868, p. 310 

 (type locality, the upper part of Lower California); Cope, 

 Bull. U. S. Nat. Mus., No. I, 1875, PP- 38, 92; Yarrow, Bull. 

 U. S. Nat. Mus., No. 24, 1883, pp. 15, 99; Belding, West Amer. 

 Scientist, Vol. Ill, No. 24, 1887, p. 98. 



Sahadora decurtata Garman, Mem. Mus. Compr. Zool., Cambr., Vol. 

 VIII, No. 3, 1883, pp. 39, 145; Garman, Bull. Essex Inst., Vol. 

 XVI, 1884, p. 25; Cope, Bull. U. S. Nat. Mus., No. 32, 1887, p. 

 72; BocouRT, Miss. Sci. au Mex., Rept., lie livr., 1888, p. 663. 



Phyllorhynchus decurtatus Stejneger, Proc. U. S. Nat. Mus., Vol. XIII, 

 1890, p. 154; Cope, Proc. U. S. Nat. Mus., Vol. XIV, 1892, p. 

 618; Van Denburgh, Proc. Cal. Acad. Sci., Ser. 2, Vol. 5, 1895, 

 p. 145; Cope, Report U. S. Nat. Mus. for 1898, 1900, p. 823, fig. 

 186; Brown, Proc. Acad. Nat. Sci. Phila., 1901, p. 64; Ditmars, 

 Reptile Book, 1907, p. 293; Stejneger & Barbour, Check List 

 N. Amer. Amph. Rept., 1917, p. 81; Van Denburgh & Slevin, 

 Proc. Cal. Acad. Sci., Ser. 4, Vol. XI, 1921, pp. 52, 66; Nelson, 

 Mem. Nat. Acad. Sci., Vol. XVI, 1921, pp. 114, 115; Atsatt, 

 Copeia, 1921, No. 96, p. 38; Terron, Mem. y Rev. Soc. Cient. 

 Antonio Alzate, Vol. 39, 1 92 1, pp. 164, 170. 



L^orhynchus decurtatus Boulenger, Cat. Snakes Brit. Mus., Vol. I, 

 1893, P- 417- 



Description. — Head short, not high, little distinct from 

 neck. Temporal regions not swollen. Rostral very promi- 

 nent, broad, with free lateral edges, recurved on top of 

 snout, completely separating intemasals, in contact with pre- 

 frontals, bounded behind by prefrontal, internasal, anterior 

 nasal, and first labial plates. Frontal short. A pair of large 

 parietals. Supraoculars comparatively small. Anterior and 



