432 AMPHISB^NID.F. 



Fore limbs present, with four clawed digits. Snout rounded ; 

 nostril lateral, i3iereed in a separate nasal. No enlarged pectoral 

 segments. Lateral line distinct. Tail cylindrical, obtuse. Prse- 

 anal pores. 



Mexico and California ; Platte River. 



1. CMrotes canaliculatus. 



Chirotes lumbricoides, Gray, Cat. Tort. p. 74, 

 and S/i. Mept, ii. p. 34. 

 Lacep. Quadr. Ovip. i. p. 613, pi. xli. 

 Bipes canaliculatus, Bonnat. Encycl. Meth., Erp. p. C8. 

 Lacerta lumbricoides, Sha%v, Nat. Misc. vi. pi. 212, 



mexicaua, Domid. Zool. Beitr. iii. p. 135. 



Chamsesaura propus, Schneid. Hist. Amph. ii. p. 211. 



Lacerta sulcata, Suckoiv, Anfangsyr. Naturg. Thiere, iii. p. 147. 



Cbalcides propus, Daud. Rept, iv. p. 372, pi. Iviii. iig. 4. 



Bimanus propus, Oppel, Ordn. Bept. p. 46. 



Chirotes canaliculatus, Merr. Tent. p. 161 ; Gu6r. Icon. R. A., Rept, 



pl. xvi. fig. 3 ; Miill. Zeitschr. f. Physiol, iv. 1831, p. 257, pi. xxii. 



figs. 6, 7 ; Dum. 8f Bihr. v. p. 474 ; Bocourt, Miss. Sc. Mex., Rept. 



p. 487, pl. xxi, c, fig. 8 ; Strauch, Mel. Biol. Ac. St. Petersb. xi. 



p. 374. 

 lumbricoides, Flem. Phil. Zool. ii. p. 278 ; Lonff, Eiyed. 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 prajocular, an intraocular, 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 Straueh'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 prseanal shields. Proeanal pores 

 six. Brownish flesh-coloured. 



millim. 



Length to vent 128 



Tail 20 



Diameter of body 5-5 



Reaches a length of 200 millim. 

 Mexico ; California ; Platte River. 



a-b. Hsrr. Mexico. 



