51. DRrOCA.IiA.MUS. 37] 



r-s.Kgr. (V. 213, 2Io; Oayloa. Dr. A. Giinthei- [P.]. 



0.78,75). 

 «. Hgi-. (V. 200; 0.88). Oeylon. W. Fev^aaon, Esq. [P.]. 



u. d (V. 206 ; 0. 80). Oeylon. Ool. Beddome [0.1. 



u. Hgr. (V. 232; 0. 84). ? T. 0. Eytou, Esq. [P.]. 



(Type of S. sem'fasciatus.) 



2. Dryocalamus subannulatus. 



Odontomus subannulatus, Dum. ^ Bibr. vii. p. 454 (1854) ; Jan, 



Icon. Gen. 36, pi. v. fig. 3 (1870). 

 Nvmphophidium maculatum, Giinth. Rept. Brit. Ind. p. 235, pi. xix. 



"fig. H (1864) ; F. Mull. Verh. nat. Qes. Basel, vii. 1882, p. 150. 



subanuulatum, Blanf. Proc. Zool. Soc. 1881, p. 219. 



Hydrophobus subannulatus, Bouleng. Faun. Ind., Rept. p. 297 



(1890). 



Rostral not twice as broad as deep, visible from above ; nasal 

 divided or semidivided ; suture between the inrernasals as long as 

 or longer than tbat between the prsefrontals ; frontal onoe and a 

 half as long as broad, longer than its distance from the end of the 

 snout, shorter than the parietals ; loreal longer than deep, entering 

 the eye; one prse- and two postoculars ; temporals 2 + 2; seven 

 upper labials, third and fourth entering the eye ; three or four 

 lower labials in contact with the anterior chin-shields, which are 

 longer than the posterior. Scales in 15 rows. Ventrals 225-244 ; 

 anal entire; subcaudals 93-107. Pale brownish above, with a 

 dorsal series of large brown transverse spots, and, on each side, a 

 series of small spots alternating with the dorsals ; a brown band 

 across the prsefrontals, another between the eyes, and a large browjn 

 blotch on the parietals ; yellowish beneath. 



Total length 295 miUim. ; tail 70. 



Sumatra, Singapore, Pinang. 



«. c? (V. 244; 0. 107). Singapore? Gen. Hardwicke [P.]. 



(Type of N. maculatum.) 

 b. 5 (V. 225; 0.93). Sumatra. Dr. Bleeker. 



(Coronella prosopeion, Blkr.) 



3. Dryocalamus gracilis. (Piate XXV. fig. 2.) 



Odontomus gracilis, Giinth. Rej/t. Brit. Ind. p. 234 (1864). 



fergusonii, Saly, Taprobanian, iii. 1888, p. 51. 



Hydrophobus gracilis, Bouleng. Faun. Ind., Rept. p. 298 (1890). 



Eostral twice as broad as deep, just visible from above ; nasal 

 semidivided ; suture between the internasals as long as that between 

 the prsefrontals ; frontal longer than its distance from the end of 

 the snout, shorter than the parietals; loreal longer than deep, 

 entering the eye, separated from the supraocular by a small pras- 

 ocular; two postociilars ; temporals. 2 + 3; seven upper labials, 

 third and fourth entering the eye; four lower labials in contact 

 with the anterior chin-shields, which are longer than the posterior. 

 Scales in 15 rows. "Ventrals 200-234 ; anal entire ; subcaudals 

 75-85 Whitish, each scale brown in the centre, with large dark 



2b2 



