57. DRYMOBHT8. 15 



.(V. 160; C.94). Colombia. 

 c. $ (V. 163; C.P). Esmeraldas, Ecuador. Mr. Fraser [C.]. 



(Tvpe). 



d,t. <$ (V. 148; C. 93) Moyobamba, Peru. Mr. A. H. Roff [C.]. 



& $(V.158; C.84). 



/. Yg. (V. 160 ; C. 96). ? v. Lidth de Jeude 



Collection. 



5. Drymobius bivittatus. 



Leptophis bivittatus, Dum. Sf Bibr. vii. p. 540 (1864). 



Thanmosophis bivittatus, Jan, Elenco, p. 82 (1863). 



Tropidonotus subradiatus, Jan, Arch. Zool. Anat. Phys. iii. 1865, 



p. -2-27, and Icon. Gen. 27, pi. iii. figs. 1 & 2 (1868). 

 Herpetodryas tetrattenia, Giinth. Ann. 8f Mag. N. H. (4) ix. 1872, 



p. 23. 



Maxillary teeth 32, posterior very feebly enlarged. Rostral 

 broader than deep, just visible from above ; internasals shorter than 

 the praefrontals ; frontal once and a half as long as broad, a little 

 longer than its distance from the end of the snout, a little shorter 

 than the parietals ; loreal as long as deep ; one praeocular, not 

 touching the frontal ; two postoculars ; temporals 2 + 2 ; nine 

 upper labials, fourth, fifth, and sixth entering the eye ; five lower 

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

 shorter than the posterior. Scales strongly keeled, in 17 rows. 

 Ventrals 147-152: anal divided; subcaudals 109-128. Olive- 

 grey above, neck with black spots ; body and tail with two broad 

 black dorsal stripes separated by the width of one scale, and with a 

 black lateral line running along the second series of scales ; a black 

 streak on each side of the head, above the lip, which is white ; 

 lower parts white, the shields olive-grey at the outer ends and 

 black-edged in front. 



Total length 730 millim. ; tail 290. 



Colombia. 



a. rf (V. 161 ; C. 128). Bogota. (Type of H. tetratasma). 



6. Drymobius dendrophis. 



Herpetodryas dendrophis, Schlcg. Phys. Serp. ii. p. 196 (1837), and 

 Abbild. p. 132, pi. xliv. figs. 25-28 (1844) ; GiintA. Cat. p. 118 

 (1858), and Ann. 8f Mag. N.H. (3) xii. 1863, p. 308, pi. vi. fig. B ; 

 Jan, lorn. Gen. 81, pi. iii. fig. 2 (1869). 



sestivus, Berthola, Abh. Ges. (jotting, iii. 1847, p. 11. 



poitei, Dum. $ Bibr. vii. p. 208 (1854). 



orunneus, Giinth. Cat. p. 116, and Ann. Sf Mag. N. H. (8) xii. 



1863, p. 358, pi. vi. fig. A ; Salvin, Proc. Zool. Soc. 1860, p. 466 ; 

 Garm. Bull. Essex Intt. xxiv. 1892, p. 91. 



Drymobius dendrophis, Cope, Proc. Ac. Pnilad. 1860, p. 661 ; Gunth. 

 Biol. C.-Am., Kept. p. 127 (1894). 

 petodryas nuchalis, Peters, Mon. JSerl. Ac. 1863, p. 285. 



Maaticophls brunneus, Cope, Proc. Ac. Philad. 1868, p. 105. 



Dendrophidium dendrophis, Cope, Proc. Am. Philot. Soc. xxiii. 1886, 

 p. 278 ; Bocourt, I* Aatttr. 188J), p. 46, figs., and Mist. Sc. Mex., 

 Sept. p. 730, pi. xlix. fig. 4 (1890) ; Duge$, La Naturaleza, (2) ii. 

 1892, p. 100, pL v. 



