synopses and descriptions. 63 



Tachymenis bipunctata. 



CoRONELLA uipunctata OiXntlier, 1858, Cat. Col. Snakes, 36. 



Moderate; tail rather elongate; head distinct from the neck, rounded, 

 rather pointed in front, crown flat. Rostral just reaching the top of the 

 head. Internasals small. Prefrontals much larger. Parietals moderate, 

 rounded behind. Frontal nearly twice as long as broad, with somewhat 

 concave lateral edges. Nasal in two parts, nostril between. A square 

 loreal. One anteocular. Postoculars two. Labials eight, fourth and 

 fifth in orbit. One elongate temporal shield in front, four or five smaller 

 ones behind. Scales rhomboid, rather small, in twenty-one rows. Anal 

 bifid. 



Brown, with a very indistinct darker dorsal streak. Darker coloration 

 of the sides well defined towards the back. Labials yellowish above, 

 black-edged. Beneath yellowish; from the chin to the tip of the tail two 

 punctated lines, each ventral plate being provided with two black spots 

 toward the middle; there is another indistinct punctated line on each edge 

 of the abdomen. Total length 17 inches; tail 5J inches. (From Gthr.) 



Tachymenis melanocephala. 



Pri,^, 1869, ¥6. Berl. Akad., S7G. 



Resembles somewhat T. bvpv/nctata in squamation and infralabials. The 

 entire head and neck for ten scales has a blackish-brown ground color, 

 behind which there is a yellowish neck band of four scales in width, while 

 the balance of the body is yellowish-brown above and uniform yellowish 

 beneath. (From descr.) Puebla, Mexico. 



Erythrolamprus. 



Bote, 1826. 



Elongate, cylindrical; head not distinct from the neck, rounded, muzzle 

 short; tail short to, moderate. Crown-shields normal. Eye moderate, 

 pupil round. Posterior upper maxillary teeth longer, grooved. Nasal 

 in two parts, nostril between. Oculars 1 — 2. A loreal. Scales in 15 

 rows. Anal divided. 



E. venustissimus. var. D. 



Giinther, 1858, Cat. Col. Snakes, 48. 



Colors black, red, and yellow in rings around the body. Rings complete, 

 but not arranged in pairs, broad, alternating with white rings of the same 

 breadths. Muzzle black in front. 



