J, 
122 COLUBRID. 
and two postoculars ; temporals 1+2 or 2+3; seven upper labials, 
third and fourth entering the eye; four or five lower labials in contact 
with the anterior chin-shields, which are as long as or longer than 
the posterior. Scalesin 19 rows. Ventrals 137-143; anal divided ; 
subcaudals 31-38. Yellowish or pale brown above, with two dorsal 
series of dark brown, black-edged roundish spots separated by a 
narrow light vertebral line; smaller spots on the sides; a large 
angular dark band on the back of the head, and one or two cross- 
bars between the eyes; two oblique dark streaks, one below and the 
other behind the eye; yellowish beneath, with squarish or roundish 
black spots. 
Total length 460 millim.; tail 70. 
Southern Brazil, Paraguay, Uruguay, Argentina. 
a. d (V. 148; C. 35). o. Lorengs RioGrande Dr.H.v. Ihering [C.]. 
o Sul. 
b. do (V. 187; C.38). Paraguay. Prof. Grant [P.]. 
. 2 (V. 189; C. 31). Uruguay. 
d. g (V. 141; C. 36). 8. of R. de la Plata. Lieut. Gairdner [P.]. 
e. Skull of d. 
° 
161. CONOPHIS. 
Tomodon, part., Dum. § Bibr. Mém. Ac. Sc. xxiii. 1853, p. 495, and 
Erp. Gen, vik p- 982 (1894) ; Jan, Arch. Zool, Anat. Physi, 1862, 
p. 822 
Psammophis, part., Giinth. Cat. Col. Sn. p. 185 (1858). 
Conophis, Peters, Mon. Berl. Ac. 1860, p. 519; Cope, Proc. Ac. 
1886)" 1861, p. 300; Bocourt, Miss, Sc. Mex., Rept. p. 642 
Maxillary teeth 10, slightly increasing in size posteriorly, followed, 
after an interspace, by a pair of very large grooved fangs situated 
just behind the vertical of the posterior border of the eye; anterior 
mandibular teeth longest. Head slightly distinct from neck; eye 
moderate, with round pupil. Body cylindrical; scales smooth, 
without pits, in 17 or 19 rows; ventrals rounded. Tail moderate; 
subcaudals in two rows. 
Mexico and Ventral] America; Southern Brazil. 
Synopsis of the Species. 
Scales in 19 rows; snout feebly projecting. 1. lineatus, p. 122. 
Scales in 19 rows; snout strongly pro- 
SOO 0 Dass nte bine Gee cba ale a's. 2. vittatus, p. 123. 
Scales in-17 TOWS 626000 de seveeenscces 3. teniatus, p. 124. 
1. Conophis lineatus. 
Tomodon lineatus, Dum. § Bibr. vii. p. 936, pl. Ixxiii. (1854) ; Jan, 
Arch. Zool. Anat. Phys. ii. 1862, p. 234, and Icon, Gén, 19, pl. vik 
fig. 3 (1866) ; Bocourt, Journ. de Zool. v. 1876, p. 406. 
Psammophis lineatus, Giinth. Cat. p. 135 (18658), 
Conophis concolor, Cope, Proc. Ac. Philad. 1866, p. 318; Bocourt, 
Miss, Sc. Mex., Rept. p. 648 (1886). 
