SYNOPSES AND DESCRIPTIONS. 63 
TACHYMENIS BIPUNCTATA. 
CorONELLA BIPUNCTATA Giinther, 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 54 inches. (From Gthr.) 
TACHYMENIS MELANOCEPHALA. 
Peters, 1869, Mb. Berl. Akad., 876. 
Resembles somewhat 7. dipunctata 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. (rom descr.) Puebla, Mexico. 
ERYTHROLAMPRUS. 
Boie, 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. VeNnustTIssiMus. 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, 
