ON THE BATRACHIA- AND REPTILIA OF COSTA RICA. 137 



93. Conophis lineatus, Dum. Bibr.; Tomodon lineatus, Dum. Bibr.; Conophis lineatus, Cope, 

 Proc. Acad. Philada. 1871, p. 204. 



San Jose ; Dr. Van Patten. 



There are five species of this genus, distributed from Costa Rica to Yucatan, 



which differ as follows : — 



I. Seven upper labials ; 



a. Temporals in two rows ; loreal higher than long. 

 Body without bands, but faint traces of them on first, third, and seventh rows of 

 scales. C. vittatus, Peters. 



Body banded on third and eighth rows. C. siimichrastii, Cope. 



Var : second row not covered by lateral band ; dorsal bands distinct. 



Subspecies siimichrastii. 

 Var : second to fifth and eighth to eighth covered by lateral and median band. 



Subspecies viduus. 



II. Eight upper labials. 



a. Two rows of temporals. 

 Loreal higher than long. Six longitudinal bands, the lower on the first row of 

 scales, two dorsal, none on the belly ; head brown yellow banded. 



C. pulcher, Cope. 



Loreal long, or longer than high ; no bands except a short one from muzzle through 

 eye. C. concolor, Cope. 



a. One row of temporals in front ; large ones behind. 

 Loreal longer than high ; bands on all the scales except those of the fifth row on 

 each side. C. lineatus, D. & B. 



The Conophis siimichrastii, Cope, has been found by M. Sumichrast in the west- 

 ern part of Tehuantepec, and near Guadalaxara by I. I. Major. The subspecies 

 C. s. viduus is also from Tehuantepec, from M. Sumichrast. It is a mimetic ana- 

 logue of Coniophanes piccivittis, Cope, from the same place. 



94. Coniophanes fissidens, Gunther, Catal. Col. Snakes B. M., 36 (Coronella). 



Sipurio and Old Harbor, abundant. 



I am acquainted with seven species of this genus from the region north of 

 Panama and south of Coahuila. They may be readily distinguished as follows : — 



I. Scales in twenty-five longitudinal rows. 



Superior labials eight ; three broad longitudinal black bands. C. piceivittis, Cope. 



II. Scales in twenty-one rows (labials 8). 



Sides dark above; a broad dorsal band; light lines on the sides of the nape; belly 

 unspotted. C. ■punctigularis, Cope. 



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