78 



PEOCEEDINGS OF THE NATIONAL. MUSEUM 



VOL. 66 



Of this rare snake Sow- 

 erby has sent in one specimen 

 (No. 66434) from Fiichow, 

 Fukien, consequently not far 

 from the type locality, while 

 Graham collected not less 

 than ten specimens, as listed 

 below, at Mount Omei and 

 vicinity, Szechwan. This is 

 rather surprising in view of 

 the fact that the species has 

 been found by no other col- 

 lector so far in the interior. 

 This series throws consid- 

 erable light on the indi- 

 vidual variation of the 

 species of which formerly 

 only two specimens were on 

 record. As a whole the 

 Szechwan specimens have 

 a slightly shorter head than 

 the one from Fukien before 

 me, but the actual measure- 

 ments afford no tangible 

 character for separation, and 

 the scale formulas are abso- 

 lutely identical, and with 

 one exception remarkably 

 uniform, the ventrals in the 

 males ranging between 109 

 and 116, in the females be- 

 tween 113 and 117, while the 

 subcaudals run respectively 

 29-30 and 22-26. The one 

 conspicuous exception is the 

 presence of a well developed 

 loreal on both sides in three 

 specimens. In this connec- 

 tion it will be remembered 

 that the type species of the 

 genus, Trirhinopholis nucJia- 

 lis Boulenger, from the 

 mountains of Burma, is also 

 characterized by the pres- 

 ence of a loreal. 



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