432 AMPHISBENID ©, 
Fore limbs present, with four clawed digits. Snout rounded ; 
nostril lateral, pierced in a separate nasal. No enlarged pectoral 
segments. Lateral line distinct. Tail cylindrical, obtuse, Pras- 
anal pores. 
Mexico and California ; Platte River. 
1. Chirotes canaliculatus. 
Chirotes lumbricoides, Gray, Cat. Tort. p. 74, 
and Sh. Rept. ii. p. 34. 
Lacép. Quadr. Ovip. i. p. 618, pl. xli. 
Bipes canaliculatus, Bonnat. Encycl. Méth., Erp. p. 68. 
Lacerta lumbricoides, Shaw, Nat. Mise. vi. pl. 212. 
—— mexicana, Donnd. Zool. Beitr. iii. p. 135. 
Chameesaura propus, Schneid. Hist. Amph. ii. p. 211, 
Lacerta sulcata, Suckow, Anfangsgr. Naturg. Thiere, iii. p. 147. 
Chalcides propus, Daud. Rept. iv. p. 872, pl. lviii. fig. 4. 
Bimanus propus, Oppel, Ordn. Rept. p. 46. 
Chirotes canaliculatus, Merr. Tent. p. 161; Guér. Icon. R. A., Rept. 
pl. xvi. fig. 3; Miill, Zettschr. f. Physiol. iv. 1831, p. 257, pl. xxii. 
figs. 6,7; Dum. & Bibr. v. p. 474; Bocourt, Miss. Sc, Mex., Rept. 
p. at pl. xxi.c, fig. 8; Strauch, Mél. Biol. Ac. St. Petersb. xi. 
. 874 
lumbricoides, Flem. Phil. Zool. ii. p. 278; Long, Exped, Rocky 
Mount. i. p. 484. 
Snout broad, rounded, very convex, not projecting beyond the 
lower jaw. Limbs depressed, about as long as the skull, with four 
well developed clawed digits, the outer shortest. Rostral pentagonal, 
forming a suture with the frontal, which is very large, and broader 
than long; nostril in the anterior portion of a large nasal; the 
other head-shields are: three labials on each side, an ocular, through 
which the eye is distinguishable, a preeocular, an infraocular, a 
supraocular, and a pair of small postfrontals. Two hundred and 
twenty or two hundred and twenty-four annuli on the body (count- 
ing from the postfrontals) and thirty-six on the tail; [from Bibron’s 
and Strauch’s accounts the number of rings on the body would vary 
between 209 and 260]; the divisions of the annuli longer than 
broad, of equal width on the’dorsal and ventral surfaces; on the 
latter the length is greater, four ventral annuli corresponding to 
five dorsals. Six or eight narrow preanal shields. Praanal pores 
six. Brownish flesh-coloured. 
nillim 
Length to vent .............. 128 
Wath, jeaih aca seeking Sbte oe4 tote 20 
Diameter of body ............ 5d 
Reaches a length of 200 millim. 
Mexico; California; Platte River. 
a-b. Her. Mexico. 
