190 



COLTJBRID^. 



Head narrow and elongate; rostral broader than deep, Adsible 

 from above ; internasals as long as deep or a little longer, as long 

 as the prtefroutals or a little shorter ; frontal narrow, bell-shaped, 

 about twice as long as broad, a little longer than its distance from 

 the end of the snout, as long as the parietals ; loreal much longer 

 than deep ; one prte- and two (rarely three) posioculars ; temporals 

 1 + 2 (rarely 2 + 2); eight upper labials, *ourth and fifth entering 

 the eye ; four or five lower labials in contact with the anterior chin- 

 shields, which are much shorter than the posterior. Scales in 19 

 rowo. Ventrals 188-203 ; p.nal divided (rarely entire) : subcaudals 

 81-111. Dark brown above, with two yellowish stripes two or 

 three scales wide ; head with or without light marblings ; upper 

 lip yellow ; lower parts yellowish or pale olive, the lateral ventral 

 keel w^tn a more or less distinct dark line ; chin and throat with or 

 without olive marblings. 



Total length 1110 iQillim.; tail 285. 



Madagascar. 



a. J(V. 200; C.93). 



b, c. 2 (V. 195, 196; 

 0. 96, ?). 



d, e. 2 (V. 193, 198 ; 



C. 97, 100). 

 /. $ (V. 203; C. 106). 



g-h. c? (V. 201, 195; 



C. 111,106). 

 i,k. c? (V.192; C.93)& 



$ (V. 188 ; C. 81). 



Madagascar. 

 Madagascar. 



Near Tamatave. 



Betsileo. 



Imeriua, 



East Imerina. 



Dr. J. E. Gray [P.]. 



Rev. W. D. Cowan 



[C.]. 

 Rev. W. D. Cowan 



[C.]. 

 Rev. R. Baron [C.]. 



Rev. R. Baron [C.]. 



2. Dromicodryas quadrilineatus. 



Herpetodryas quadrilineatu'*, Diim. Sf Bihr. vii. p. 212 (1854). 



— .— bernieri, var. quadrilineatus, Jan, Icon. Gen. 31, pi. iv. fig. 2 



(1869) ; Boettff. Abh. Senck. Ges. xi. 1877, p. 9, xi. 1879, p. 463, 



and xii. 1881, y. 44;3. 

 bernieri, var. trilineata, part., Boettff. II. cc. 



This form is very closely allied to the p/eceding, of which it has, 

 in fact, been regaided as a variety. However it differs, in addition 

 to the \e''y striking coloration, in having a less narrow head. 

 Ventrals 198 to 216 ; subcaudals 108 to 122. Pale ohvo above, 

 with a pair of bUck dorsal stripes (which may be confluent in 

 the var. trilineata) and a narrower lateral one, which gradually 

 disappears on the posterior part of ttie body and is altogether 

 absent on the tail ; head and nape dark brown or blackish above, 

 with six yellowish spots (disposed ^••,), the anterior pair on the 

 parietal and secord temporal shields, the second behind the parietals, 

 and the third just in front of and sometimes confluent with the 

 lateral dorsal stripes; louver parts yellowish, with an interrupted 

 dark line along each lateral ventral keel. 



Total length 1020 millim. ; tail 300. 



Madagascar. 



