44, Boopon. 329 
2. Scales in 25 to 31 rows. 
a. Two pairs of chin-shields, in contact with each other. 
Parietal shields longer than the distance 
between the frontal and the end of , 
the snout ..... Sa cae eat aecees 6. lineatus, p. 332. 
Parietal shields as long as the distance 
between the frontal and the end of 
RTs dos steer senses 7. fuliginosus, p. 334. 
b. Only one pair of chin-shields meeting on the median line. 
8. mentalis, p. 335, 
II. Subcaudals single .............. 9. olivaceus, p. 335. 
1, Boodon lemniscatus. 
Bowdon lemniscatum, Dum. § Bibr. vii. p. 365 (1854); Jan, Icon, 
pg pl. iii. fig. 1 (1870); Blanf. Geol. § Zool, Abyss. p. 457 
( > 
Eye small. Rostral broader than deep, scarcely visible from 
above; internasals subtriangular, shorter than the prefrontals ; 
frontal twice as long as broad, longer than its distance from the end 
of the snout, as long as the parietals; loreal longer than deep; one 
preocular, not extending to the upper surface of the head; two (or 
three) postoculars; temporals 1+ 2; eight upper labials, third, 
fourth, and fifth entering the eye; three or four lower labials in 
contact with the anterior chin-shields, which are much longer than 
the posterior. Scales in 21 or 23 rows. Ventrals 194-200; anal 
entire; subcaudals 41-60. Pale brown above; a dark vertebral 
band, extending to the end of the snout and forming a loop on the 
crown; a dark lateral band, three or four scales wide on the body, 
also extending to the end of the snout, passing through the eye; 
lower parts yellowish, with brown dots, which may form a streak 
along each side of the belly, and one along the middle of the tail. 
Total length 800 millim.; tail 110. 
Abyssinia. 
a~-b, 3 (Se. 21; V. 200; C. 55) Ashangi. W.T. Blanford, Esq. 
&Q(Se. 21; V. 197; O. 41). P 
eg (Se. 21; V. 194; C.60), Abyssinia. w Teneo, Esq. [C.), 
2. Boodon geometricus. 
Lycodon geometricus, Schleg. Phys. Serp. ii. p. 111 (1887). 
Hageethes geometricus, Dum. § Bibr. vii. Fos (1854). 
Bowdon geometricum, Jan, Elenco, p. 95 (1863), and Icon. Gén. 36, 
= iii, fig. 2 (1870); Peters, Reise n. Mossamb. iii. p, 134 (1882) ; 
‘ouleng. Ann. Mus. Genova (2) xii. 1891, a 14, 
Boodon seychellensis, Giinth. Ann. § Mag. N. H. (6) i. 1888, p. 330, 
pl. xviii. fig. C. 
Eye rather small, Rostral broader than deep, just visible from 
— = + 
es 
oo, 
ae a = Pore Se eee if 
