100. FICIMIA. 271 



Synopsis of the Species. 



Rostral shield forming a suture with the 



frontal 1. olivacea, p. 271. 



Eostral shield separated from the frontal ; 



seven ■well-developed upper labials . . 2. tana, p. 272. 

 Rostral shield separated from the frontal ; [p. 272. 



seventh upper labial very small .... 3. quadrangularis, 



1. Ficimia olivacea. 



Ficimia olivacea, Gray, Cat. p. 80 (1849) ; Steind. Sitzb. Ak. Wien, 

 Ixii. i. 1870, p. 344, pi. vi. ; Boeourt, Miss. So. 3Ie.v., Eept. p. 570, 

 pi. XXXV. fig. 11 (188.3) ; Giinth. Biol. C.-Am., Bepf. p. 98, pi. xxxv. 

 ligs. B & C (1893). 



Amblymetopon variegatum, Giinth. Cat. p. 7 (1858). 



Ficimia elaiocroma, Jan, Arch. Zool. Anat. Phys. ii. 1862, p. 58. 



publia, Cope, Proc. Ac. Philad. 1866, p. 126, and Am. Nat. 



1884, p. 163 ; Giinth. Biol. C.-Am., Rept. p. 98. 



variegata. Cope, I. c. 



olivacea, part., Peters, Mon. Berl. Ac. 1869, p. 875. 



oruata, Boeourt, I. c. p. 571, pi. xxxv. fig. 10. 



Snout short, concave above, and strongly turned up at the end. 

 Rostral forming a broad suture with the frontal, separating the 

 praofrontals ; internasals small or absent ; frontal as broad as long, 

 as long as its distance from the end of the snout, nearly as long as 

 the parietals ; supraocular about one third the width of the frontal ; 

 one proe- and two postoculars ; temporals 1 + 1 or 1+2; seven 

 upper labials, second in contact with the prsefrontal, third and foui'th 

 entering the eye ; three lower labials in contact with the anterior 

 chin-shields ; posterior chin-shields very small, scale-like. Scales 

 in 17 rows. Ventrals 138-160 ; anal divided ; subcaudals 34-42. 



Total length 390 millim. ; tail 65. 



Mexico. 



A. Uniform dark brown above, white below. {F. olivacea. Gray.) 



a-b. S (V. 152, 150 ; Mexico. Mr. Hugo Finck [C.]. 



C. 42, 41). (Types.) 



In one of the specimens the internasals are fused with the prse- 

 frontals, whilst in the other the internasal is distinct on one side. 



B. Yellowish or pale brown above, with dark brown transverse 

 spots or cross bars ; sides with dark brown spots ; head with 

 symmetrical dark markings ; lower parts uniform white. 



a. Internasals distinct. {F. inihlia. Cope.) 



a. Yg. (V. 140 ; C. 36). Cuemavaca. M. Boucard [C.l. 



h. Yg. (V. 142 ; C. 36). Yucatan. 



