30. PHYLLORHYNCHUS 693 
two series. The eye is large, with vertical pupil. Palatine 
teeth are present. Maxillary dentition is dicranterian. 
Two species are known. They may be recognized by 
the following: 
SYNOPSIS OF SPECIES 
a.—Scales keeled on posterior two-thirds of body; tail one- 
eighth total length; about 13 to 46 dark spots between 
head and tip of tail; no lateral spots. 
P. browni.—p. 693. 
a’.—Scales all smooth; tail about one-eleventh total length; 
about 23 to 48 dark spots between head and tip of tail; 
one or two rows of lateral spots. 
P. decurtatus.—p. 695. 
153. Phyllorhynchus browni Stejneger 
Brown’s LEAF-NOSED SNAKE 
Phyllorhynchus browni StEJNEGER, Proc. U. S. Nat. Mus., Vol. XIII, 
1890, p. 152, fig. (type locality, Tucson, Arizona); Core, Proc. 
U.S. Nat. Mus., Vol. XIV, 1892, p. 618; Cope, Report U. S. Nat. 
Mus. for 1898, 1900, p. 821, fig. 184; Brown, Proc. Acad. Nat. 
Sci. Phila., 1901, p. 64; Dirmars, Reptile Book, 1907, p. 293, 
Van DensurcuH & Stevin, Proc. Cal. Acad. Sci., Ser. 4, Vol. 3; 
1913, p. 393; STEJNEGER & Barsour, Check List N. Amer. Amph. 
Rept., 1917, p. 81. 
Lytorhynchus brownt BouLencer, Cat. Snakes Brit. Mus., Vol. I, 1893, 
p- 417. 
Description—Head short, rather high, little distinct 
from neck. Temporal regions not swollen. Rostral very 
prominent, broad, with free lateral edges, recurved on top 
of snout, completely separating internasals, and partially 
prefrontals, bounded behind by prefrontal, internasal, nasal, 
and first labial plates. Frontal and parietals rather short. 
Supraoculars comparatively small. Anterior and posterior 
nasals distinct. Nostril overhung by prominent lower edge 
