201, APARALLACTUS. 257 | 
Diameter of eye greater than its distance from the oral margin. 
Rostral broader than deep, the portion visible from above half as 
long as its distance from the frontal; internasals much shorter 
than the prefrontals; frontal once and a half as long as broad, 
much longer than its distance from the end of the snout, slightly 
shorter than the parietals; nasal entire, in contact with the 
preeocular ; two postoculars, in contact with the anterior temporal ; — 
temporals 141; seven upper labials, third and fourth entering the 
eye; first lower labial in contact with its fellow behind the 
symphysial; two pairs of chin-shields, subequal in length, the 
anterior broader and in contact with three lower labials. Scales in 
15 rows. Ventrals 142; anal entire; subcaudals 36. Pale 
reddish brown above, with a black vertebral line; upper surface of 
head and nape black, the nuchal blotch edged with yellow and 
extending to the sides of the neck; a pair of yellow spots behind 
the parietal shields ; sides of head yellow, the shields bordering the 
eye black; lower parts uniform yellowish. | 
Total length 180 millim.; tail 30. 
East Africa. 
a. Hgr. 9 (V. 142; C. 36). Foot of Mt. Kiliman- F.J. Jackson, Esq. 
jaro. [P.]. (Type.) 
2. Aparallactus werneri. (Prater XI. fig. 1.) 
Aparallactus werneri, Bouleng. Ann. § Mag. N. H. (6) xvi. 1895, 
p. 172. 
Diameter of eye greater than its distance from the oral margin. 
Rostral twice as broad as deep, the portion visible from above nearly 
half as long as its distance from the frontal; internasals much 
shorter than the preefrontals; frontal once and a half as long as 
broad, longer than its distance from the end of the snout, as long as 
the parietals ; nasal entire, in contact with the preocular; two 
postoculars, in contact with the anterior temporal ; temporals 1+1; 
six upper labials, second and third entering the eye; first lower 
labial in contact with its fellow behind the symphysial; two pairs 
of chin-shields, the anterior broader and a little longer and in 
contact with three lower labials. Scales in 15 rows. Ventrals 
147-160 ; anal entire; subcaudals 32-41. Blackish above, with 
a deep black, somewhat light-edged nuchal collar; upper lip 
blackish below the eye, yellowish in front and behind ; lower parts 
uniform yellowish. 
Total length 390 millim.; tail 65. 
East Africa. 
a-b. Sd (V. 147; C. 41) & Usambara. Dr. F. Werner [E.]. 
@ (V. 160; C. 32). (Types.) 
3. Aparallactus concolor. 
Uriechis concolor, Fischer, Jahrb. Hamb. Wiss. Anst. i. 1884, p. 4, 
pl. i. fig. 1; Gtinth. Ann. § Mag. N. H. (6) i. 1888, p. 325, 
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