CONOPHIS. 165 
Differing from Tachymenis in possessing a large and long grooved tooth. Nasal as 
well as anal divided. 
1. Conophis lineatus. 
Tomodon lineatum, descr. pars, Dum. & Bibr. Erpét. vii. p. 936. 
Eudrome a flancs linéolés, Dum. & Bibr. loc. cit. t. 73. 
Psammophis lineatus, Giinth. Cat. Col. Sn. p. 135. 
Tomodon lineatus, Salv. P. Z. S. 1860, p. 455; Jan, Iconogr. Ophid. xix. t. 6. fig. 3. 
Conophis lineatus, Cope, Journ. Ac. N. Sc. Phil. viii. p. 187 (1875). 
Conophis concolor, Cope, Proc. Ac. N. Sc. Phil. 1866, p. 818. 
Conophis pulcher, Cope, Proc. Ac. N. Sc. Phil. (1868) 1869, p. 308; Bocourt, Miss. Se. Mex., 
Rept. p. 646, t. 28. figg. 6, 6 a-g. 
Hab. Mexico, Yucatan (Mus. Brit.); Guatmmaua, Duefias (Salvin), Vera Paz and 
Chiapas (Smithson. Jnst.); Nicaragua (Cope); Costa Rica, Cartago (Mus. Brit.), 
San José (van Patten). 
Scales in nineteen rows; upper labials eight. Body longitudinally banded with 
black ; three of the bands take their origin from the snout, breaking up on the body into 
continuous lines or series of spots; sometimes the vertebral band dissolved into two 
pairs of black lines, sometimes an additional band along the side. ‘The bands may 
disappear altogether, with the exception of traces on the head. 
Duméril and Bibron have evidently confounded in their description forms with seven 
and eight labials; but as they have figured a specimen with eight labials, I have taken 
this as the type of their species. The arrangement of the bands, particularly the width 
of the vertebral band, is subject to infinite variation. 
2. Conophis vittatus. 
Tomodon lineatum, descr. pars, Dum. & Bibr. Erpét. vii. p. 936. 
Conophis lineatus, Bocourt, Miss. Sc. Mex., Rept. p. 643, t. 38. fige. 5, 5 a-e. 
Conophis vittatus, Peters, MB. Ak. Wiss. Berl. 1860, p.519; Bocourt, Miss. Sc. Mex., Rept. p. 644, 
t. 38. figg. 7, 7 a-e. 
Conophis sumichrastu, Cope, Journ. Ac. N. Sc. Phil. viii. p. 1387 (1875) ; Sumichrast, Bull. Soc. 
Zool. Fr. v. p. 182 (1880). 
Hab. Mexico, Tepetlapa in Guerrero (H. H. Smith), Guadalajara (Cope), Santo Domingo 
de Guzman (4. C. Buller), Oaxaca (Mus. Paris), Tehuantepec (Sumichrast). 
Scales in nineteen rows; upper labials seven. Body longitudinally banded with 
black, three bands taking their origin from the snout; in younger specimens the bands 
are uniformly black, whilst in older ones the vertebral, and sometimes the lateral band 
becomes lighter along the middle, the black colour being reduced to more or less 
narrow margins. ‘The black bands may appear as parallel straight lines four in 
number. 
