3. COLEONYX. 235 



1. Coleonyx elegans. 



Coleonjx elegans, Gray, I. c. p. 163 ; C<^e, Troc. Ac. Philad. 1866, 



p. 126 ; Bocourt, I. c. p. 49, pi. x. fig. 7. 

 Gymnodactylus scapularis, A. Bum. Cat. Meth. Rept. p. 45. 



coleonyx, A. hum. Arch. Mus. viii. p. 483, pi. xvi. fig. 6. 



Brachjdactylus mitratus, Peters, I. c. p. 42. 



Body and limbs rather elongate, latter slender ; digits slender, 

 short. Snout longer than the distance between the orbit and the 

 ear-opening; latter large, oval, slightly oblique. Snout covered 

 with large, slightly keeled granules ; the rest of the head with 

 small granules intermixed with small round tubercles ; rostral 

 large, pentagonal, once and a half as broad as high ; anterior 

 nasal very large, forming a suture with its fellow ; six or seven 

 upper and seven or eight lower labials ; mental large, trapezoid, 

 a little broader than long ; no chin-shields. Body covered above 

 with small granules intermixed with numerous round, smooth 

 or very slightly keeled tubercles. Abdominal scales strongly im- 

 bricate. Male with eight or nine prseanal pores. Tail cylindrical, 

 tapering, covered with small, flat scales, slightly enlarged inferiorly, 

 above with rows of enlarged tubercles. Brownish white above, 

 variegated with chestnut-brown ; a U-shaped band on the nape, and 

 four cross bands on the body, light, bordered with brown ; head 

 largely vermiculated with brown ; tail with brown rings ; lower 

 surfaces whitish. 



Total length 124 millim. 



Head 17 „ 



Width of head 11 „ 



Body 50 „ 



Fore limb 23 „ 



Hind hmb 28 „ 



Tail 57 „ 



Specimen h, in which the tail is lost, measures 87 millim. from 

 snout to vent. 

 Central America. 



a. cf. Belize. Mr. Dyson [C.]. (Type.) 



h. cJ. Yucatan. 



