268 cOLUBRID®. 
a. 3 (V. 147; C. 36). California. Smithsonian Institution. 
(As typical of C. mztes.) 
b-c. g§ (V.160; C.35)& California. Mr. Bridges [C.j. (Types 
2 (V. 166; C. 32). of A, purpureocauda.) 
d. Yg. (V. 151; C. 34). Murphy, California. Christiania Mus. 
e.-2 (VY. 161; C. 29). Vancouver Id. H.M.S. ‘ Plumper.’ 
19. Contia semiannulata. 
Sonora semiannulata, Baird § Gir. Cat. N. Am. Rept. p. 117 (1853), 
and Rep, U.S. Explor. R. R. x. pt. iii. pl. xxxili. fig. 88 (1859), 
and U.S. Mex, Bound. Surv. ii. Rept. pl. xix. fig. 5 (1859). 
Contia semiannulata, Garm. N. Am. Rept. p. 90 (1883). 
Nasal divided; frontal broader than the supraocular; loreal 
longer than deep; one preocular; three postoculars, upper largest 
and slightly touching the frontal; temporals 1+2; seven upper 
labials, third and fourth entering the eye. Scales in 15 rows. 
Ventrals 149; anal divided; subcaudals 39. Orange above, with 
black cross bands, which form annuli round the tail; sides and 
belly duli green. 
Total length 240 millim. ; tail 50. 
Sonora. 
According to Cope (Proc. U.S. Nat. Mus. xiv. 1892, p. 601) 
this species may prove to be the same as C. isozona, the bad state 
and abnormal condition of Baird and Girard’s specimens possibly 
accounting for the differences on which the two have been 
separated. 
20. Contia nasus. 
Conopsis nasus, Giinth. Cat. p. 6 (1858); Peters, Mon. Berl. Ac. 
1869, p: 875; Bocourt, Miss. Sc. Mex., Rept. p. 563, pl. xxxv. 
fig. 2 (1888) ; Giinth. Biol. C.-Am., Rept. p. 97, pl. xxxiv. fig. B 
(1893) 
Oxyrhina varians, Jan, Arch. Zool. Anat. Phys. ii. 1862, p. 60, 
(Exorhina) maculata, Jan, l. c. p. 61, and Icon. Gén. 48, pl. ii. 
figs. 2-4 (1876). 
Conopsis maculatus, Bocourt, 1. c. p. 564, pl. xxxv. fig. 3. 
lineatus, Bocourt, l. c. p. 565, pl. xxxv. fig. 4, and Bull. Soe. Zool. 
Fr, 1892, p. 41. 
—— varians, Bocourt, l. c. p. 566, pl. xxxv. fig. 5; Dugés, La Natu- 
raleza, (2) 1. 1888, p. 128. 
Ficimia nasus, Garm. N. Am. Rept. p. 83 (1883). 
maculata, Garm. l.c. p. 84. 
Chionactis diasii, Cope, Proc. U.S. Nat. Mus. ix. 1886, p. 188. 
Snout prominent, more or less pointed. Rostral large, the portion 
visible from above as long as its distance from the frontal; inter- 
nasals often fused with the prefrontals; nasal entire or semi- 
divided ; frontal longer than its distance from the end of the snout, 
as long as the parietals, once and a half to once and two thirds as 
broad as the supraocular; a small square loreal present or absent ; 
one pree- and two (rarely one) postoculars ; temporals 142; seven 
upper labials, third and fourth entering the eye; anterior chin- 
