SNAKES FROM DEHLI. 23 



25. Vryophis fasciolatus Fischer. 



Three specimens of this species from Borneo , described 

 by Dr. J. G. Fischer *), were collected by Dr. Hagen in La- 

 boean. They agree in all points with Fischer's description. 



26. Psammodynastes pulverulentus Boie. 



Three specimens in Dr. Hagen's collection. 



27. Psammodynastes pictus Gthr. 



It may be noticed as a curious fact , that in Dehli both 

 species of the genus Psammodynastes are found side by 

 side. Dr. M. Mocquard in his » Seconde contribution a 

 I'histoire du genre Psammodynastes'''' ") remarks that as Ps. 

 pictus was found both in Borneo and in the isle of Bili- 

 ton, it would be a surprising fact, if it did not occur in 

 Sumatra, Java and the surrounding islands. Now, with 

 Dr. 0. Boettger's statement of its occurrence in Indrapura 

 (S. W. Sumatra) ^) , and the fact of its being found in 

 Dehli, Ps. pictus may justly be regarded as an inhabitant 

 of the large isle of Sumatra. The occurrence of the two 

 species side by side in Dehli upsets Dr. Fischer's theory 

 according to which Ps. pictus is to be regarded as a local 

 variety of Ps. pulverulentus *). In my opinion there can 

 exist little doubt about the specific difference between 

 these two forms. They may be distinguished even at a 

 distance without counting or comparing shields or scales. 

 The head of Ps. pulverulentus has a broad trigonal form 

 and the sides of the snout with the lips descend in a 

 nearly perpendicular position without any remarkable cur- 

 ves , and so form a clearly marked canthus r ostralis. 



1) Dr. J. G. Fischer. Ueber eine KoUection von Amphibien und Reptilien 

 aus S. O. Borneo. Arch. f. Naturgesch. 1885. p. 66. 



2) Extrait da Bulletin de la Société Philomatique de Paris. Se'ance du 12 

 Mai 1888. 



3) Bericht über die Senckenbergische Natnrf. Ges. zu Frankfurt a/M. 1886/87. 

 p. 46. 



4) Dr. J. G. Fischer. 1. c. Arch. f. Naturgesch. 1885. 



Notes from th.e Leyden ]VIu.seu.m, Vol. X.II. 



