Nov 51 

 1923 J AMARAL — NEW GENERA AND SPECIES OF SNAKES 103 



the eye to the angle of the mouth; labials yellowish gray; upper surface of 

 the tail, anteriorly, gray without marking, and posteriorly, yellow and un- 

 spotted, lower surface entirely yellow. 



Total length, 447 mm.; tail, 75 mm. 



Type, no. 50,110 in the collection of the United States National Museum, 

 from Cana, eastern Panama, 3000 ft. altitude, collected on June 27, 1912, 

 by Mr. E. A. Goldman of the U. S. Biological Survey. 



Bothrops leptura, which easily can be distinguished from all 

 the other species by its prehensile, very long, thin and spotless 

 tail, and by its characteristic color, was included in a collection 

 of Bothrops which was kindly sent me for study by Dr. L. 

 Stejneger through Dr. Thomas Barbour. 



Bothrops andiana sp. no v. 



Snout broad, rounded, with canthus sharp and not elevated; eye large; 

 rostral flattened, rectangular, a little deeper than broad; nasal divided; 

 internasals large, flat, disposed almost transversely, in contact one with 

 the other; canthals also flat, but smaller than the internasals; supraoculars 

 smooth, rounded and separated one from the other by 3 to 6 series of scales, 

 the medial one or more series sometimes very large; upper head scales 

 smooth on the snout; 3 praeoculars, the upper one much larger than the 

 others, twice as long as deep; 2 postoculars and a subocular, separated from 

 the upper labials by only one series of scales, or sometimes in contact with 

 them; temporal scales faintly keeled; 7 upper labials, 2d forming the an- 

 terior border of the loreal pit, the last 5 of the same size; 9 or 10 lower 

 labials, first pair separating the symphysial from the only pair of chin 

 shields. Scales in 21 rows, short, strongly keeled, with rounded tip, keels 

 long and somewhat high; ventrals, 157-161; anal entire; subcaudals, 50- 

 55 pairs. Tail short, non-prehensile. 



Olive gray above, with dark light-edged triangles, with their apices 

 sometimes meeting, on the back, with those of the opposite side; a dark 

 light-edged streak from the eye to behind the angle of the mouth; upper 

 labials and lower surface of the head bright yellow; belly yellow, closely 

 powdered with dark gray, showing sometimes a medial yellow streak 

 anteriorly. 



Total length, 605 mm.; tail, 90 mm. 



Type, adult d\ no. 8832 in the collection of the Museum of Comparative 

 Zoology, caught in 1912, in Machu Picchu, Department of Cuzco, Peru, 



