24 PROCEEDINGS OF THE NATIONAL MUSEUM vol. r 



The head scalation is normal in all, excepting No. 70319, where 

 four postoculars appear on one side of the head, and No. 72072, 

 which has three posterior temporals. The stomach of No. 72072 

 contained a frog, Oxydozyga martensi, No. 72115. 



[76029. Back of neck red, side of neck bright yellow. — H. M. S.J 



[75635. "Ngukapa chinchuk." General color of back finely mixed 

 light and dark green, with white edges and scales; head above greenish 

 blue; nape black; eye in a black spot, a yellow area below eye; a 

 yellow spot behind and below eye; a postnape line yellow, as is under 

 side of head. Said to be poisonous. — H. M. S.] 



According to a recent study by Doctor Mell ® the Siamese race of 

 subminiata appeared to merit subspecific distinction, since his series 

 of 12 specimens showed a uniformly low scale count, rangiQg between 

 143 and 157. In the 15 snakes in my series on which ventral plates 

 could be counted the range was even a little lower, being between 

 138 and 154 with an average of 146.5, thus corroborating Doctor 

 Mell's observations so far. Eleven snakes from Peninsular Siam 

 collected by Dr. W. L. Abbott range from 137 to 148, averaging 140.1. 

 But a series of 28 specimens from Java, the type locality of the typical 

 subminiata, shows a variation of 137 to 149, the average beiQg 141.4^ 

 and this seems insufficient to warrant subspecific distinction between 

 Siamese and Javanese snakes which are otherwise similar. 



NATRIX CHRYSARGA (Schlegel) 

 U.S.N.M. 



70332 (S2151) Nong Khor Sept. 22, 1925 



70333 (S2152) do Sept. 23, 1925 



70334 (S2154) do Sept. 24, 1925 



72135 (S2539) do Mar. 21, 1926 149 



72136 (S2537) do Mar. 20, 1926 



72147 (S2393) Koh Chang Jan. 4, 1926 



NATRIX STOLATA (Linnaeus) 

 U.S.N.M. 



70345 (S2103)_._ _- Nong Mong Sept. 1, 1925. 



75452 (S3520) Nong Ri, Nakon Nayok June 5, 1927. 



The scale formula for No. 70345 is as follows: 19 scale rows; 145 

 ventrals; divided anal; caudals — ; 8 upper labials; oculars 1+3; 

 temporals 1+3. For No. 75452, the formula is: 19 scale rows; 147 

 ventrals ; divided anal ; 78 caudals ; 8 upper labials ; oculars l + Yi', 

 temporals 1+2. 



LYCODON AULICUS (Linnaeus) 



U.S.N.M. Ventrals Caudals 



72051 (S2786)__ Tonburi, Bangkok Aug. 26, 1926-.- 200 63 



72308 (S2923)__ Koh Tao, Gulf of Siam Jan. 2, 1927 191 74 



75686 (S3569)-_ Bangkok Apr. 12, 1928. __ 197 65 



76160 (83982). _ Koh Tao, Gulf of Siam Sept. 18, 1928... 184 72 



« Congr. Internat. Zool., Budapest, vol. 10, 1929, p. 1472. 



Ventrals 



Caudala 



157 



86 



159 



80 



158 



80 



149 



83 



154 



82 



159 



__ 



