420 Dr. A. Gunther on new Sjjectes of Snakes 



Herjpetodryas occipitalis. 



Similar to Herpetodryas Rappii. Habit moderately slender. 

 Eyes large. Shields of the head normal ; eight upper labials, 

 the third, fourth, and fifth entering the orbit ; loreal nearly as 

 high as long ; prgeocular reaching to the upper surface of the 

 head, but not extending to the vertical ; lateral edges of the 

 vertical nearly parallel ; occipitals subtruncated behind. Two 

 or three postoculars ; temporals 2 + 2. There are four lower 

 labials in contact with the front chin-shields, which are three- 

 fifths as long as the posterior. 



Scales smooth, in fifteen rows. Ventrals 175 ; anal entire ; 

 subcaudals 96. 



Upper parts brownish black, with narrow greyish transverse 

 lines, separated from one another by five or six ti'ansverse 

 series of scales ; a broad white band across the occipitals, ex- 

 tending behind the orbit to the posterior labials ; hind margin 

 of each labial black; ventrals pearl-coloured, marbled with 

 black on the sides. 



A specimen, 14 inches long, has been obtained by Mr. 

 Hauxwell at Pebas. Head 6 lines, tail 3^ inches. 



Tropidonotus SivinJionis. PI. XIX. fig. F. 



Head rather nan-ow and elongate ; trunk rather slender. 

 Eye of moderate size. Scales in fifteen rows. Ventrals 150 ; 

 anal bifid ; subcaudals between 50 and 60. Anterior frontals 

 rounded in front, half as large as posterior ; occipitals obliquely 

 truncated behind, longer than vertical ; loreal as deep as long ; 

 one prajocular, reaching to the upper surface of the head ; three 

 postoculars. Six upper labial shields, the third and fourth 

 entering the orbit, the fifth very long, nearly as long as the 

 three preceding ones together ; temporals 1+2, the anterior 

 rather elongate, in contact with the two lower postorbitals. 

 Dentition diacranterian. 



Upper parts nearly uniform olive-brown, anteriorly with a 

 few indistinct and irregular blackish spots. Neck reddish 

 olive, with a broad black collar : a small blackish spot below 

 the eye, and an oblique blackish band across the temporal 

 region. Lower parts uniform whitish, slightly and finely 

 marbled on the side. 



Formosa. A single specimen, 25 inches long, has been 

 obtained by Consul Swinhoe. Head 9 lines long, tail 5 inches. 



Tropidonotus punctulatus (Gthr.). 



This snake proves to be a native of Pegu, whence specimens 

 were brought by Mr. Theobald. 



