46 ME. G. A. BOULENGER ON THE REPTILES 



ELAPID^E. 



HOPLOCEPHALUS, Cuv. 



18. Hoplocephalus par. (Plate VII. fig. 4.) 

 Hoplocephalus par, Bouleng. Proc. Zool. Soc. 1884, p. 210. 



The body is moderately elongate. The head is depressed, moderately large, slightly 

 widened posteriorly ; the eye is of moderate size, its diameter one third the length of 

 the snout, with vertical pupil and without supraciliary ridge. The rostral is consider- 

 ably broader than deep, and its upper border forms a very open angle, which is visible 

 from above ; the frontonasals are half as long as the prefrontals, which are a little 

 shorter than the frontal ; the latter is pentagonal and only a little longer than broad ; 

 the length of the parietals equals that of the prefrontals and frontal together. 

 The nasal forms a short suture with the prseocular; postoculars two, lower largest. 

 Seven upper labials, third and fourth entering the eye ; the first is the smallest, the 

 third is larger than the fourth, the sixth is the largest of all. One temporal in the 

 first row, two in the second, three in the third. The dorsal scales are equal, and their 

 longitudinal series in even numbers ; there are sixteen on the anterior and median 

 parts of the body, fourteen on the posterior part; 166 ventral shields and 43 pairs of 

 caudals ; the anal is divided. 



The coloration is very handsome. The upper surface of the head to the lip is uni- 

 form blackish brown, and the same colour forms a narrow border to every one of the 

 dorsal scales except a few of the laterals. The body is crossed above by broad red- 

 brown bands, separated by narrow white interspaces ; there are thirty-nine of these red 

 bands to the extremity of the tail. The lower surface of the head and body are uni- 

 form white, except on the posterior extremity of the body, where the red and black 

 extend as lines along the sutures of the ventrals ; on the tail the red forms complete 

 annuli, the white interspaces being, however, wider inferiorly than superiorly. 



Total length 75 centim., tail 11 centim. 



One specimen was obtained by Mr. Guppy on Faro Island. 



HYDROPHIID^E. 



Platurus, Latr. 



19. Platurus fasciatus, Daud. 



This Sea-Snake, which is found throughout the East-Indian archipelago and Poly- 

 nesia, was also collected by Mr. Guppy. 



