1)1). CONTIA. 



I'H'.I 



shields short and in contact with three or four labials ; second pair 

 very small. Scales in 17 rows. Ventrals 110-137; anal divided; 

 subcaudals 23-40. Grey or pale brown above, with dark brown 

 (sometimes light-edged) spots or cross bands, or with a series of 

 small dark spots forming a vertebral stripe, which may be accom- 

 panied by another more or less distinct stripe along each side ; 

 upper surface of head speckled with dark brown, sometimes with 

 symmetrical markings ; belly yellowish or red, uniform or with 

 blackish dots or square black spots. 



Total length 290 millim. ; tail 50. 



Mexico. 



A. Internasals distinct. 



a-. rf (V. 123 ; C. 36) & La Cumbre de los 

 2 (V. 137, 133, 135, Arrastrados, Tal- 

 128; C. 29, 31, 28, pa Mascota, Ja- 

 28). 



/-?. Yg. (V. 135, 122; 

 C. 30, 26). 



h-l. ? (V. 129, 133, 131 ; S. Mexico. 

 C. 30, 30, 31) & vg. 

 (V. 125 ; C. 29). 



m. rf (V. 131 ; C. 35). 



pa l 



lisco. 



Puebla. 



Mexico. 



Dr.A.C.Buller [C.]. 



Paris Museum [E.]. 



Mr. H.H. Smith [C.]. 

 F. D. Godman, Esq. 



[P.]- 



B. Intemasal distinct on one side, fused with the praefrontal 

 on the other. 



n-o. Yg. (V. 128, 122 ; C. La Cumbre de los 

 27, 39). Arrastrados. 



Dr. A. C.Buller[C.]. 



C. Intel-nasals fused with the pnefrontals. 



p-r. S (V. 128, 125; C. 



38, 37) & $ (V. 133; 



C. 29). 

 -w. <f (V. 115, 119; 0. 



33, 36), $ (V. 130, 



129; C. 23, 26),&yg. 



(V. 129 ; C. 28). 

 x. cJ (V. 132 ; C. 36). 

 y-$. S (V. 131, 128; C. 



40, 39) & $ (V. 129, 



128, 130, 132; C. 31, 



?, 33, 33). 

 t. S (V. 131 ; C. 35). 



La Cumbre de los 

 Arrastrados. 



Omilteme, Guerrero. 



Milpas, Durango. 

 Mexico. 



California (?). 



Dr. A. C. Buller [C.]. 



Mr. II. H. Smith [C.]. 

 F. D. Godman, Esq. 



[P.]. 



Hr. A. Forrer. 

 M.Salle-[C.]. (Types.) 



Mr. Bridges [C.]. 



Toluca lineata, Kennicott, U.S. Mex. Bound. Surv. ii. Kept 

 p. i':J, pi. xxi. fig. 2 (1859), and Rep. U.S. Explor. R. R. x. pt. iii. 

 pi. xxxv. fig. 8 (1859),= Oxyrhina (Achirhina) defilippii, Jan, 

 Arch. Zool. Anat. Phys. ii. 1862, p. 61, are based on what are, in 

 all probability, anomalous specimens of C. nasng, in which the 

 frontal shield is so produced anteriorly as to separate the pne- 

 frontals. 



