NOTES ON SNAKES COLLECTED IN UPPER ASSAM. 



827 



Colvher porphyracevs (Cantor). 



Two specimens ; one from Sadiya and one from Namsang, near 

 Jaipur. Both quite typical. 



Dendrophis p ictus (Gmelin). 



I obtained one 9 specimen of what I think there can be no doubt 

 is this species. The anal is divided, the ventrals 195, and costals 15 

 anteriorly and in midbody, 9 behind at a point two heads-lengths 

 before the vent. 



Dendrophis proarchos (spec, nov.) 



1 collected 24 specimens of a snake of this genus which is certainly 

 entitled to rank as a distinct species hitherto not described. With the 

 exception of one from Sadiya, one from North Lakhimpur (Dejoo) 

 and one from near Doom Dooma, all were obtained around Dibrugarh. 



The species is extremely like pictus, but differs in having the anal 

 shield entire and in the dentition. In no other species of this or the 

 nearly allied genus Dendrelaphis is the anal undivided. I have prepared 

 two skulls and the dentition is as follows. Maxillary 27 to 2b teeth^ 



