tn the Collection of the British Museum. 425 
approaches that of Psammophis, see Rept. Brit. Ind. p. 301), 
and is more distinct from Zragops than Passerita from the 
latter genus. 
Leptodira annulata (L.). 
_ A singular, nearly uniform slate-coloured variety, with the 
markings very indistinct, occurs at Chiavetas, Upper Amazons, 
It has the scales in nineteen rows. 
Leptodira nigrofasciata. 
_ Seales in nineteen rows, smooth, with two apical grooves. 
Rostrals scarcely reaching to the upper surface of the head ; 
anterior frontals nearly square, two-thirds the size of posterior; 
vertical as long as the snout and a little shorter than the occi- 
oR which are rather narrow and rounded behind ; loreal as 
igh as long; one pre- and one postocular, the former not 
pe reaching to the vertical; eight upper labial shields, the. 
third, fourth, and fifth entering the orbit; temporals 1+2+3; 
yentrals 174; anal bifid; subcaudals 74. 
_ Body with sixteen broad black cross bands, which are from 
three to four times broader than the interspaces of the whitish 
ound-colour, and confluent on the posterior part of the trunk. 
Head black above, separated by a white collar from the first 
black band; tail with about eight black cross bands. Lower 
parts whitish. The posterior maxillary tooth grooved. 
_ One specimen was found by Dr. Seemann in Nicaragua; it 
is 14 Shen long, the tail being 34 inches. 
Dipsas ochraceus. 
Scales in nineteen rows, with an apical groove, those of the 
vertebral series larger than the others. Ventrals 239-242 ; 
anal entire; subcaudals 100; nostril rounded, immediately 
below the anterior frontal ; loreal nearly as high as long. One 
preocular, not reaching to the upper surface of the head ; two 
postoculars ; temporals varying in number, the two anterior 
are elongate and generally in contact with the postoculars ; 
pt upper labials, the third, fourth, and fifth entering the 
orbit; two pairs of chin-shields, the anterior not much larger 
than the posterior. Anterior palatine and mandibulary teeth 
not much enlarged. 
Uniform brownish olive. Inside of mouth not coloured. 
We have received this new snake from Mr. Theobald, who 
named it. Two specimens, the larger of which is 44 inches 
long, were found by him in Pegu. 
PYTHONODIPSAS. 
Head depressed, very distinct from neck: body depressed 
Ann. & Mag. N. Hist. Ser.4. Vol. i. 30 
