122 COITTBEID^. 



and two postoculars ; temporals 1 + 2 or 2 + 3 ; seven upper labialsj. 

 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. Scales in 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. (J (V. 143 : 0. 35). S. Lorenzo, Kio Grande Dr.H.v.Iheriiig[C.]. 



do Sul. 

 &. c7 (V. 137; 0.38). Paraguay. Prof. Grant [P.], 



c. $ (V. 139 ; 0. 31). Uruguay. 



d. S (V. 141 ; 0. 36). S. of R. de la Plata. Lieut. Gairdner [P.]. 



e. Skull of b. 



^ 161. CONOPHIS. 



Tomodon, part., Bum. Sr Bibr. Mim. Ac. Sc. xxiii. 1853, p. 495, attif 

 Erp. Gen. vii. p. 932 (1854) ; Jan, Arch. Zool. Anat. Phys. ii. 1862,. 

 p. 322. 

 Paammophis, part., Giinth. Cat. Col. Sn. p. 135 (1858). 

 ConopHs, -Peters, Mon. Berl. Ac. 1860, p. 519 ; Cope, Proc. Ae. 

 Philad. 1861, p. 300; Bocourt, Miss. 8c. Mex., Kept. p. 642 

 (1886). 

 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 pupU. Body cylindrical ; scales smooth, 

 without pits, in 17 or 19 rows ; ventrals rounded. Tail moderate j 

 subcaudals in two rows. 



Mexico and Central 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- 

 jecting 2. vittatus, p. 123. 



Scales in 17 rows 3. tceniatus, p. 124. 



1. Conopliis lineatus. 



Tomodon lineatus, Dum. Sf Bibr. vii. p. 936, pi. Ixxiii. (1854) ; Jan, 

 Arch. Zool. Anat. Phys. ii. 1862, p. 234, and Icon. Gen. 19, pi. vi, 

 fig. 3 (1866) ; Bocourt, Journ. de Zool. v. 1876, p. 406. 



Psammophis lineatus, Giinth. Cat. p. 135 (1858). 



OonopHs concolor. Cope, Proc. Ac. Philad. 1866, p. 318 ; Bocourt, 

 Miss. Sc. Mex., Bept. p. 648 (1886). 



