we 
946 COLUBRID. 
48. Tropidonotus sexlineatus. 
Dromicus sexlineatus, Giinth. Ann, § Mag. N. H. (5) ix. 1882, 
p. 264, fig. 
—— macrocercus, Giinth, 1... p. 265, 
Lente nam Fischer, Jahrb. Hamb. naturw, Anst. i, 1884, p. 86, 
pl. iii 
Eye rather small, Rostral nearly as deep as broad, visible from 
above; internasals broader than long, as long as or a little shorter 
than the prefrontals; frontal once and two thirds to once and 
three fourths as long as broad, longer than its distance from the 
end of the snout, shorter than the parietals ; loreal as long as deep 
or deeper than long ; one (rarely two) pre- and two postoculars ; 
temporals 1+2; eight upper labials, fourth and fifth entering the 
eye; four lower labials in contact with the anterior chin-shields, 
which are shorter than the posterior. Scales smooth, in 17 rows. 
Ventrals 143-157; anal divided; subcaudals 72 (2) to 152(¢). 
Tail of male nearly half the total length, of female two sevenths. 
Olive-brown above, darker on the vertebral region ; a dark brown or 
black lateral band from the end of the snout, through the eye, to the 
angle of the mouth ; two other more or less distinct lateral streaks, 
on each side, one above and one below, the latter bordering the 
ventrals ; upper lip yellowish; lower parts yellowish, uniform or 
black-spotted. 
Total length 1060 millim. 
Madagascar. 
a-c. 9 (V. 146, 147, E. Betsileo. Rev. W. D. Cowan [C.]. 
wes C. 73, 76, 78). (Types. .) 
d-f.  (V. 152, 157, E. Betsileo. Rev. W. D. Cowan [C.]. 
154; C. 152, 150, ). (Types of D. pa 
g- 2 (V. 146; C. 77). Betsileo. ‘Rev. G. Shaw [C 
h. 2 (V. 145; C. 72). Madagascar. Rey. R. Baron [C.] 
t. g (V.157; C. 110). Madagascar. 
k,l. 3 (V. 162; C. ?) East Imerina. Rey. R. Baron [C.]. 
&9(V. 1438; 0. 72). 
49. Tropidonotus dolichocercus. 
Dromicus dolicocercus, Peracca, Bull. Mus. Torin. vii. 1892, no. 112, 
pl. i. fig. 1. 
Eye rather large. Rostral much broader than deep, just visible 
from above; internasals shorter.than the prefrontals ; frontal once 
and a half as long as broad, longer than its distance from the end 
of the snout, a little shorter than the parietals ; loreal as deep as 
long or deeper than long; one preocular; two or three postoculars ; 
temporals 142; eight upper labials, fourth and fifth entering the 
eye; four or five lower labials in contact with the anterior chin- 
shields, which are nearly as long as the posterior. Scales smooth, 
in 17 rows. Ventrals 148-156 ; anal divided; subcaudals 97 (2) , 
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