82 COLTJBEIB^. 



Heterurus Ijicolor, Jan, Icon. 06n. 38, pi. ii. fig. S (1871). 

 Anoplodipsas viridis, Peters, Mon. Berl. Ac. 1869, p. 442, pi. — . 



fig. 4. 

 Dipsadoboa assimilis, Matschie, Sitzh. Ges. Nat. Fr. 1893, p. 173. 



Eostral broader than deep, scarcely visible from above ; inter- 

 uasals broader than long, about half as long as the praefrontals ; 

 frontal a little longer than broad, as long as or a little longer than 

 its distance from the end of the snout, shorter than the parietals ; 

 loreal as long as deep or deeper than long ; one praeocular, usually 

 in contact with the frontal; two postoculars; temporals 1+2; 

 eight or nine iipper labials, fourth and fifth, fifth and sixth, or 

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

 in contact with the anterior chin-shields, which are as long as or 

 shorter than the posterior. Scales in 17 rows. Ventrals 186-216 ; 

 anal entire; subcaudals 66-100. Green or dark purplish brown 

 above, yellowish beneath. 



Total length 790 millim. ; tail 160. 



West Africa. 



A. Green above. 



a. ? (V. 186;-C. 68"). W.Africa. Mr. Rich [0.1 (Type.) 



b. d (V. 193 ; 0. 76). Fernando Po. Dr. Giinther [P.]. 



B. Dark purplish brown above. 



a-h. 5 (V. 199; 0. ?) & Rio del Rey. H. H. Johnston, Esq. rP-l. 

 hgr. (V. 210 ; C. 93). 



c. $ (V. 194 ; C. 66). Gaboon. 



^ 150. EHINOBOTHRYUM. 



Ehinobothryum, Wagler, Syst. Amph. p. 186 (1830) ; Dum. 8f Bibr. 



Erp. Gin. vii. p. 1060 (1854) ; Gunih. Cat. Col. Sn. p. 176 (1858) ; 



Jan, Elenco sist. Ofid. p. 102 (1863). 

 Dipsas, part., ScJtleg. Phys. 8erp. ii. p. 367 (1837). 



Maxillary teeth 14, equal, followed, after an interspace, by a pair 

 of enlarged grooved fangs situated below the posterior border of the 

 eye ; anterior mandibular teeth longest. Head distinct from neck ; 

 eye large, with vertically elliptic pupil ; nostril very large, verti- 

 cally oval, between two nasals and the internasal ; rostral shield 

 very large. Body compressed ; scales keeled, with apical pits, in 19 

 or 21 rows ; ventrals angulate and feebly notched laterally. Tail 

 long ; subcaudals in two rows. 



Tropical South America. 



1. Rhinobothrytim lentiginosum. 



Coluber lentigLnosus, Scqpoli, Delic. Flor. Faun. Insuhr. iii d 41 



pl. XX. fig. 2 (1785). ^' 



Rhinobothryum macrorhinum, Wagl. Syst. Amph. p. 186 (1830). 



