30 PROCEEDINGS OF THE NATIONAL MUSEUM vol.77 



borders of the scale edged darker and lighter to form a variation, but 

 without any bars across the body. There are traces of markings 

 on the head which resemble the figure also. The formula is: 17 scale 

 rows; 176 ventrals; undivided anal; 42 caudals; 7-8 upper labials; 

 oculars 1 + 2 ; temporals 1 + 1 ; a subocular is present. 



The Pak Jong specimen is dull colored and seems to fit the color 

 variety A, as defined by Boulenger.^^ This snake has 7 upper 

 labials and no subocular, while typical examples of violaceus possess 8 

 upper labials and usually a subocular. The scale formula is as 

 follows: 17 scale rows; 175 ventrals; an undivided anal; 40 caudals; 

 7 upper labials, the third and fourth entering the eye; oculars 1 + 2; 

 temporals 1+2. 



Dr. Malcolm Smith has examined these specimens also. He writes 

 me that "the number of labials may be 7 or 8, but except for that, 

 the species is fairly constant as regards scalation." 



The Pran specimen is very much like the Pak Jong snake in color, 

 except that its dark nuchal mark is more distinct. The formula is: 

 17 scale rows, 174 ventrals; undivided anal; 38 caudals; 8 upper 

 labials; oculars 1+2; temporals 1+2. A subocular is present below 

 the preocular. 



GONGYLOSOMA SCRIPTUM (Theobald) 

 U.S.N.M. 

 76103 (S3932) Kao Luang, Nakon Sritamarat. July 20, 1928. 



This very rare snake has the following scale formula: 13 scale 

 rows; 133 ventrals; a divided anal; 98 caudals; oculars 2+2; temporals 

 1 (very long) +2; supralabials 8. The head and body measure 

 240 mm. and the tail 160 mm. The coloration is that given by 

 Boulenger, except that there is no white collar on the nape. A white 

 bar edged with black arises from commisure of the mouth and ends 

 bluntly just outside the lower border of the parietal shields, and this 

 may be a trace of the collar. 



ENHYDRIS ENHYDRIS (Schneider) 

 U.S.N.M. 



70309(81985) Bangkok June 29, 1925. 



70310 (S1992) do July 14, 1925. 



70311 (S2083) do Aug. 18, 1925. 



70312 (S2087) do Aug. 23, 1925_ 



70313 (S2150) do Oct. 10, 1925-. 



70314 (S2237) do Oct. 30, 1925. 



70315 do Aug. 8, 1925.- 



Ventrals 



Caudals 



168 



68 



163 



63 



170 



75 



167 



75 



172 



64 + 



161 



64 



This fresh-water snake, common in Bangkok, is represented in this 

 collection by seven specimens. The largest one, an adult female, No. 

 70314, contains a number of embryos nearly developed. 



In all cases the head scalation is absolutely normal, and there are 

 21 scale rows around the body. 



" Cat. Snakes Brit. Mus., vol. 2, 1894, p. 223. 



