ART. 11 HERPETOLOGICAL COLLECTIONS FROM SIAM — COCHRAN 29 



very long one, which in turn is bordered by two, so that the formula 

 reads 1 + 1+2. In No. 70290, in No. 72057 on one side of the head, 

 and in No. 72713, there is a long anterior temporal followed by two 

 posterior ones. In none of my specimens are there two anterior tem- 

 porals which Doctor Smith gives as the normal occurrence in his series 

 of 15. 



Nos. 67319, 70289, and 72057 are females, as shown by the higher 

 ventral count and lower number of subcaudals. Three eggs, preserved 

 with No. 67319, collected in the yard of Dr. Hugh Smith's residence 

 in Bangkok, measure between 13.5 and 14 mm. in length and 8 to 8.5 

 in width. 



HOLARCHUS TAEMATUS MOUHOTI (Boulenger) 



U.S.N.M. 



67247 Rajaburi July 30, 1923. 



One specimen from Rajaburi seems referable to this variety on color 

 pattern, for it has the two tail bars and the heart-shaped headmark 

 mentioned by Dr. Malcolm Smith. The tongue is conspicuously 

 tipped with black and the base is likewise black; the intervening 

 space now bleached to white may once have been red. The collar, 

 however, is not more complete than in the specimens of iaeniatus just 

 listed. There is a subocular on both sides of the head. The single 

 small anterior temporal is followed by a long, large one ; this in turn is 

 followed by two scales on one side of the head and by one scale on 

 the other, so that the temporal scale formula reads 1 + 1 + K- There 

 are 17 scale rows around the body, 151 ventrals, and at least 37 

 subcaudals, although the end of the tail is missing. 



HOLARCHUS VIOLACEUS (Cantor) 

 U.S.N.M. 



72161(82910) PakJong Dec. 22, 1926. 



72309 (S2939) Koh Tao, Gulf of Siam Jan. 1, 1927. 



75585(83763) Pran May 25, 1928. 



The headplates of the Koh Tao specimen resemble very closely 

 the drawing of Simotes multifasciaius in Jan's Iconographie des 

 Ophidiens.^° A marked difference in scutellation is found in the 

 seventh supralabial, which in the Koh Tao specimen is very high and 

 permits of only one posterior temporal, while this labial is lower in 

 the figure of multifasciatus and there are two posterior temporals. 

 The frontal plate is about equal in length to the parietals in multi- 

 Jasciatus, while in my specimen the padetals are longer than the 

 frontal. 



The ventral coloration is much the same, there being the quad- 

 rangular dark spots in two rows, with a lightened area in the middle 

 of the belly between them. The Koh Tao specimen, however, is 

 unspotted above, the scales appearing a dark purplish gray with the 



10 Livr. 12, pi. 4, fig. 2. 



