Mr. G. A. Boulenger on Snakes from Natal. 379 
the parietals; the prefrontals have a tendency to divide, a 
cleft extending along half of their length from the posterior 
angle of the internasal; loreal square; two  preoculars, 
upper smaller; two postoculars; temporals 1+2; seven 
upper labials, third and fourth entering the eye. Scales in 
15 rows (19 on the neck). Ventrals 208; subcaudals 47. 
Dark olive-brown, with a yellow vertebral stripe. 
Philothamnus semivariegatus, Smith. 
A female specimen, measuring 940 millim.; tail 310. 
This is of interest as the first specimen received from Natal, 
the original locality whence the species was described by 
Andrew Smith. It agrees with the types in the black 
markings, but differs in the ground-colour being entirely of a 
bright grass-green above. ‘T’emporals 2+23 nine upper 
Jabials, fourth, fifth, and sixth entering the eye. Ventrals 178; 
subcaudals 125. 
Macrelaps microlepidotus, Gthr. 
Two fine female specimens, the larger measuring 1 metre 
(tail 110 millim.). ‘Lis is remarkable in having the rostral 
nearly twice as broad as deep, its upper portion measuring 
one third its distance from the frontal. Both have the post- 
ocular in contact with the anterior temporal and 25 rows of 
scales. Ventrals 168, 162; subcaudals 27, 33. 
Elapechis Sundevallit, Smith. 
I have now several specimens before me, which differ much 
in coloration. ‘The adult (up to 880 millim.; tail 55) are 
dark brown above, with narrow white cross-bars nearly equi- 
distant or approximate in pairs, their number varying from 
48 to 69; one specimen has the belly marbled with brown. 
A young specimen (250 millim.) is alternately barred black 
and white, the two bars of equal extent, the edges of 
the white ones of a purer white, which no doubt persist to 
form the narrow bars of the adult. In some of the speci- 
mens the upper part of the rostral measures only two thirds 
its distance from the frontal. Ventrals 165-184;  sub- 
caudals 22-25. 
This snake has recently been recorded from the Upper 
Zambesi by Peracea (Boll. Mus. Torin. xi. 1896, no, 255). 
Nata nigricollis, Reinh. 
I have recently recorded this species from the De Kaap 
