The Poisonous Snakes of Texas. 
43 
city of Victoria, Texas; which is now in the Public School museum 
there, as is also the stuffed skin of a fine specimen captured by Professor 
Gates Thomas in Fayette County, near the town of Winchester in June, 
1902. John K. Streecker, Jr. (Transactions of Texas Academy of 
Science, Vol. IV, part II, Ho. 5, 1901), mentions one large specimen 
being killed four miles north of Waco, McLennan County. I expect it 
has been plentiful in the timber districts of Central Texas, and no doubt 
a search would find specimens there yet. 
HABITS. 
I have never observed this snake myself, and know nothing of its 
habits. 
Quoting from Professor 0. P. Hay on the habits of Crotalus horridus 
(Report of National Museum, 1898, page 1189) : “The number of 
young appears to be about nine. I found this number of eggs in a 
female about thirty-seven inches long, brought from Pennsylvania. 
'The eggs were 1.5 inches long b}^ an inch in diameter. Of these there 
were four in the left oviduct. There were evidences that development 
had begun.” 
CROTALIJS MOLOSSUS, B. and G. 
( Dog-faced Rattlesnake. ) 
Plate IX. 
DESCRIPTION. 
“Muzzle broad; rostral small. Scales between superciliaries (supra 
oculars) small, uniform, except the two anterior. Two frontal plates 
(internasals), four post frontals (prefrontals), two inter super ciliary 
(interorbitals), all in contact. Five rows scales between the labials and 
and suborbital row; middle row not extending beyond the middle of the 
orbit; labials, eighteen above, fifth and sixth largest; seventeen below. 
Dorsal rows of scales, twenty-nine ; two external, rows, small. Tail uni- 
form black. Color roll sulphur; a series of chestnut brown transverse 
lozenges with exterior corners produced to the abdomen ; centers of lozen- 
ges wil^h one or two spots ; each scale but one color ; a brown patch below 
and behind the eye. 
One of the most strongly marked of all species. Head very broad in 
front; outline nearly rectangular. Rostral small. Two anterior fron- 
tals (internasals) ; behind these, four plates, the exterior resting on the 
superciliary; behind these two other plates between and in contact with 
the superciliaries (supraorbitals) . Anterior nasal subtriangular. Top 
of head with numerous smooth subtubercular scales. Suborbitals large, 
extending to the anterior canthus. General aspect smoother than in 
