PSAMMOPHIS SIB1LANS. 303 
xvi. (xxxvi.) 1896, p. 553; id. op. cit. xvii. (xxxvii.) 1896-97, p. 13 et p. 279; Ann, & Mag. 
N. H. (6) xix. 1897, p. 279 ; Proc. Zool. Soc. 1897, p. 801 ; Bocage, Herpet. d'Angola et du 
Congo, 1895, p. 114; Jorn. Sc. Lisboa, (2) iv. no. 14, 1896, pp. 78, 93, & 113; id. op. cit. 
no. 15, 1896, p. 177; Boettger, Zool. Anz. ]896, p. 119; Anderson, Herpet. Arabia & 
Egypt, 1896, p. 108 ; Lonnberg, Bihang till K. Svenska Vet.-Akad. Handl. 22, Afd. iv. 
no. 1, 1896, p. 19; Peracca, Boll. Mus. Zool. Torino, xi. 1896, no. 255, p. 2, xii. 1897, 
no. 273, p. 3 ; Werner, Verb, zool.-bot. Ges. Wien, xlvii. 1897, p. 400 ; Tornier, Kriecbth. 
Deutscb-Ost-Afr. 1897, p. 82. 
1 jj. Beltim. Surgeon Lieutenant-Colonel Sir J. G. Rogers, D.S.O., K.C.M.G. 
1 c? . Northern part of the Delta. J. R. Gibson, Esq. 
1 (S and 1 2 . Mahallet el Kebir. George Kent, Esq. 
1 tf. Abbasiyeb. Major-General H. M. L. Rundle, D.S.O., C.M.G. 
3 <$ and 1 2 . Abu Roash. 
2 cJ and 2 2 . Gizeh. 
2 6 and 1 2 . Fayura. 
2 6 and 1 2- Minia. Major R. H. Brown, R.E., C.M.G. 
1 c? and 12- Tel el Amarna. Professor W. M. Flinders Petrie, D C.L. 
1 2 . Luxor. 
Rostral as high or higher than broad, more visible from above than in the preceding 
species ; internasals rounded anteriorly, half the size of the prefrontals ; frontal as long 
as, or somewhat longer tban, the distance between its anterior border and the end of 
the snout, its least breadth equal to one-third or less of its length, and to about one- 
half or more of its anterior breadth ; parietals as long as, or little shorter than, the 
frontal, longer than broad, posteriorly somewhat narrowly rounded and slightly divergent. 
Two or three nasals ; one long and narrow loreal ; one prseocular, either in contact 
with or excluded from the frontal; two or three postoculars; temporals 2 + 2, rarely 
2 + 3 or 3 + 3; eight upper labials, the fourth and fifth generally entering the orbit, 
and occasionally the fifth and sixth ; anterior chin-shields broader, but slightly shorter, 
than the posterior pair, in contact with five labials. Scales in 17 rows. Ventrals 155- 
198; anal 1/1; subcaudals 90-116. 
Either longitudinally banded with brown and yellow, with or without a pale vertebral 
line and dark line on the angle of the ventrals, or uniformly coloured above, with or 
without the pale vertebral line and the dark line on the ventrals. 
In the banded forms there is a broad dorsal band of some tint of brown, its borders 
and the outlines of the scales lying within it margined with blackish ; below this 
dorsal band a narrow yellow band with a broad lateral brownish band below it paler 
than the dorsal band, the scales in this band also more or less margined with black, 
and those of the line next the ventrals each usually with a black spot at the apex, but 
the lower halves of the scales of this row are yellowish like the ventrals. These bands 
become defined about the region of the twentieth ventral ; the sides of the neck 
anterior to this are nearly of the same colour as the mesial dorsal band, and are 
