in the Collection of the British Museum. 425 



approaches that of Psammophts, see Kept. Brit, Ind. p. 301), 

 and is more distinct from Tragojys than Passerita from the 

 latter genus. 



Leptodira anmdata (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. 



Lejttodira nigrofasciata. 



Scales 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- 

 pitals, which are rather narrow and rounded behind ; loreal as 

 high as long ; one prge- and one postocular, the former not 

 quite reaching to the vertical ; eight upper labial shields, the 

 third, fourth, and fifth entering the orbit ; temporals 1 -|-2-t-3; 

 ventrals 174; anal bifid; subcaudals 74. 



Body with sixteen broad black cross bands, which are from 

 three to four times broader th.ui the interspaces of the whitish 

 ground-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 inches long, the tail being 3^ 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 

 praeocular, 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 ; 

 eight 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\. 30 



