1861.] MR. O. SALVIN ON GUATEMALAN REPTILES. 227 



one-third of the natural size. The specimen was caught in the 

 month of April in the Rosi Khola, a clear hill-stream of the central 

 region of Nepal. 



4. On a Collection of Reptiles from Guatemala. 

 By Osbert Salvin, M.A., F.Z.S. 



The collection, of which the present paper is a list, was formed 

 during the past twelve months by Mr. Robert Owen, Corresponding 

 Meml3er of this Society, at San Geronimo and the neighbouring 

 mountains in the province of Vera Paz. In a former paper, Dec. 

 1860, I gave a short account of the collections I made in Guatemala. 

 The present series adds five species of Snakes to that list, making a 

 total of twenty-four species, a number which doubtless falls consider- 

 ably short of the whole number of species inhabiting Guatemala. In 

 determining the species I have availed myself of Dr. A. Giinther's 

 assistance and of the specimens in the British Museum. 



1. Streptophorus sEBiK, Dum. & Bibr. 

 Several specimens. 



2. HoMALOCRANioN ATROCINCTUM, Dum. & Bibr. 



In a single specimen in the collection there are sixty-two black 

 rings on the body and nine on the tail. These rings are twice the 

 width of the yellow intervals, and are confluent on the belly. Along 

 the dorsal series is a hue of red interrupted by the black rings. 



3. CORONELLA DOLIATA, LinU. 



Adult and young. 



The red colouring in the young is not shown, though very clear 

 in the adult. 



4. Pleiocercus ^qualis, n. sp. 



Scales in 17 rows; 8 upper labials; tail two-fifths of the whole 

 length ; body and tail banded throughout with equidistant black 

 bands. 



Body long and slender, slightly compressed anteriorly ; tail very 

 long and tapering ; head depressed, broader posteriorly, snout ob- 

 tuse, crown flat, eye moderate ; rostral shield small, slightly convex, 

 just reaching to the upper surface ; anterior frontal shields small, 

 pentagonal, obtuse ; posterior frontals large, three times the size of 

 the anterior frontals, quadrangular, bent on the sides ; vertical short, 

 rather longer than broad, outer edges slightly converging, posterior 

 angle nearly a right angle ; occipitals large, rounded behind ; ante- 

 rior ocular reaches the upper surface of the head, but not to the 

 vertical ; loreal pentagonal, on one side united with the frontal ; 

 nostril in the middle of two shields ; eight upper labials, the fourth 

 and fifth reaching to the orbit ; scales in 1 7 rows, in rather oblique 

 series, those of the back narrower than those of the sides ; anal bifid ; 

 ventral plates 131, caudal 92. 



