22 SNAKES FROM DEHLI. 



The single specimen of this species which I dedicate to 

 Dr. B. Hagen, shows asymmetry in the arrangement of the 

 upper- and lower-labials. It was caught at Laboean. 



18. Liopeltis tricolor Schl, 



One specimen in Dr. Hagen's collection. 



19. Gonyosoma oxi/cephalum Reinw. 



Four specimens in Dr. Hagen's , one in Mr. Prakke's col- 

 lection. 



20. Leptophis formosus Schl. 



One specimen in Dr. Hagen's collection, without any 

 black stripes along the sides. The black band from the tip 

 of the snout through and behind the eye runs on to on 

 the body. 



21. Dendrophis pictus Boie. 



Many specimens in both collections. 



22. Dendrophis octolineatus D. & B. 



Two specimens from Laboean , one from Langkat. 



23. Chrysopelea ornata Shaw. 



One specimen in Dr. Hagen's collection belonging to 

 var. •/ Güuther ') has the hind margins of the ventral- 

 shields black. The other specimens from Laboean and Lang- 

 kat belong to Günther's var. s. Dr. P. Bleeker considered 

 this variety as a distinct species and called it C. Hasseltii , 

 as is stated by Dr. Günther 1. c. and may be seen in seve- 

 ral specimens now in the Leyden Museum, formerly in 

 Dr. Bleeker's collection. As far as I know Dr. Bleeker 

 never gave a description of his new species. 



24. Dryophis prasinus Wagl. 



A great many specimens of this common snake were 

 collected by Dr. Hagen. 



1) Dr. A. Günther, Reptiles of British India, p. 299. 



Notes from the Leyden IVTuseum, "Vol. XII. 



