100. rioiMiA. 



Synopsis of the Species. 



Eostral shield forming a suture with the 



frontal 1. olivacea, p. 271. 



Rostral shield separated from the frontal ; 



seven well-developed upper labials . . 2. cana, p. 272. 

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



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



1. Picimia olivacea. 



Ficimia olivacea, Grap, Cat. p. 80 (1849) ; Steind. Sitzb. Ah. Wien, 

 bdi. i. 1870, p. 844, pi. vi. ; Bocourt, Miss. So. Mex,, Rept. p. 570, 

 pi. XXXV. %. 11 (1883) ; Gunth. Biol. C.-Am., Bent. p. 98, pi. xxxv. 

 %s. B & C (1893). 



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



Ficimia elaiocroma, Jan, Arch. Zool. Anat. Phys. ii. 1862, p. 68. 



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



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



variegata, Cope, I. c. 



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



ornata, Bocourt, 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 

 prsefrontals ; 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 prse- and two postooulars ; temporals 1 + 1 or 1 + 2; seven 

 upper labials, second in conJ;act with the prsBfrontal, third and fourth 

 entering the eye ; three 16wer 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 miHim. ; taU 65. 



Mexico. 



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



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



C. 42, 41). (Types.) 



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

 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. publia, Cope.) 



a Yg. (V. 140 ; 0. 36). Ouernavaca. M. Boucard [C.]. 



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



