144, TARBOPHIS. 51 
5. Tarbophis variegatus. 
— variegata, Reinh. Vidensk. Selsk. Skrift. x. 1843, p. 249, pl. i. 
gs. 15-17; F. Miill. Verh. Nat. Ges. Basel, vii. 1885, p. 689. 
Rostral broader than deep, scarcely visible from above ; inter- 
nasals nearly as long as broad, a little shorter than the parietals ; 
frontal about once and a half as long as broad, longer than its 
distance from the end of the snout, as long as or a little shorter than 
the parietals ; nasal divided ; loreal longer than deep; one pra-* 
and two postoculars; temporals small, 2+38 ; seven to nine upper 
labials, third and fourth or fourth and fifth entering the eye; three 
or four lower labials in contact with the anterior chin-shields ; 
posterior chin-shields small and widely separated from each other, 
or indistinct. Scales in 19 rows. Ventrals 209-226 ; anal divided ; 
subcaudals 62-67. Pale brownish above, with 26 to 30 rather irre- 
gular dark brown cross-bars, each enclosing a whitish vertebral spot ; 
head spotted er marbled with brown ; the sutures between the upper 
labials dark brown; belly and lower surface of tail yellowish 
white, spotted with dark brown. 
Total length 590 millim.; tail 95, 
Guinea. 
a,b. 3 (V. 218; C. 64) & W. Africa. 
2 (V. 226; C. 62). 
6. Tarbophis semiannulatus. 
Telescopus semiannulatus, Smith, Ill. Zool. S. Afr., Rept. pl. Ixxii. 
(1849) ;. Dum. & Bibr. vii. p. 1058 (1854); Peters, Reise n. 
Mossamb. iii. p. 127 (1882). 
Leptodira semiannulata, Giinth. Ann. §& Mag. N. H. (4) ix. 1872, 
p. 31; Bouleng. The Zool. 1887, p.179; Boettg. Ber. Senck. Ges. 
1887, p. 162. 
Crotaphopeltis semiannulatus, Bocage, Herp, d’Angola, p. 122 
(1895). 
Rostral broader than deep, just visible from above; internasals as 
long as broad or a little broader than long, usually shorter than the 
preefrontals ; frontal once and one third to once and a half as long 
as broad, as long as or a little longer than its distance from the end 
of the snout, a little shorter than the parietals; nasal divided ; loreal 
as long as deep or a little longer than deep; one preocular, not 
reaching the frontal; two postoculars ; temporals 2++2 or 3; eight 
or nine upper labials, third, fourth, and fifth entering the eye; four 
or five lower labials in contact with the anterior chin-shields; 
posterior chin-shields small and widely separated from each other. 
Scales in 19 rows. Ventrals 206-242; anal divided; subcaudals 
51-83. . Yellowish or pale brown above, with 24 to 34 dark brown 
* In the specimens in the Collection the preocular does not reach the 
frontal. 
E2 
