30. PHYLLORHYNCHUS 695 



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

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

 Arizona. 



1 54. Phyllorhynchus decurtatus (Cope) 



LOWER CALIFORNIA LEAF-NOSED SNAK.E 



Plate 72 



Phimothyra decurtata COPE, Proc. Acad. Nat. Sci. Phila., 1868, 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. 



Salvadora decurtata CARMAN, Mem. Mus. Compr. Zool., Cambr., Vol. 

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

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

 72; BOCOURT, Miss. Sci. au Mex., Kept., 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, 1921, pp. 164, 170. 



Lytorhynchus 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 internasals, 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 



