410 COLUBRID. 
fifth or sixth very rarely entering the eye; four lower labials in 
contact with the anterior chin-shields; posterior chin-shields longer 
than the anterior, narrow and separated from each other by two or 
three series of scales. Scales perfectly smooth, in 25 to 29 rows, 
usually 27. Ventrals very distinctly angulate laterally, 222-258 ; 
anal divided (rarely entire); subcaudals 77-107. Brown, reddish, 
or pale olive above, with a dorsal series of large dark brown, black- 
edged rhomboidal spots, on each side of which is a series of smaller, 
alternating spots ; these spots may be black and so large as to reduce 
the ground-colour toa mere chain orseries of X’s of pale colour ; a dark 
cross band between the eyes, and a A- or horseshoe-shaped band on 
the back of the head, which may be confluent with an elongate spot 
on the nape; the spots confluent into three longitudinal streaks on 
the tail; yellowish or red inferiorly, with or without black dots, 
but constantly with a lateral series of black spots. 
Total length 1340 millim. ; tail 270. 
Spain and Portugal, Sardinia, Morocco, Algeria, Tunisia. 
a. 3 (Sc. 27; V.222; A.2; Gibraltar. College of Surgeons. 
C. ?). 
b. 2 (See 27; V. 232; A. 2; Spain. Lord Lilford [P.}. 
C. 107). 
c. fg (Se. 27; V. 228;A.2; Portugul. Dr. A. Farre [P.}. 
100). 
d-e. S (Be. 27; V.235; A.2; Cagliari,Sar- Count M. G, Peracea 
C. 87) & yg. (Se. 25; v. 229 ; inia, [Pak 
A. 2; C. 90 
f, g , (Be. 27; Vv. 228; A. 2; Mogador. Zoological Society. 
C. ?). 
g. é (Se. 27; V. 220; A. 1; Tangier. Mr. Fraser [C.]. 
. 92). 
h-k. Hgr. 2 (Se. 27; V. 2382; Tangier. Mr. H. Vaucher [C.}. 
A. 2; C. 90) & yg. (Se. o7, 
a7; V, 231, 225% eA 8 8° 
Cc. 93, 80). 
l. Ate: (Se. 27; V.249; A.2; Hamman Dr. J. Anderson [P.]}. 
89). Meskoutine, 
Algeria. 
une (Se. 27; V. 225; A.2; Algiers. Dr. J. Anderson [P.}, 
88). 
n. Py a 27; V. 287; A.2; Tunis. Mr. Fraser [C.}. 
C. 90) ‘ 
o. Hgr., skel. Mogador. C. Pj Payton, Esq. 
p. Skull. Algeria. ‘- 
28. Zamenis dorri. 
Periops dorri, Lataste, Le Natur. 1888, p. 227. 
Head very distinct from neck, with broadly rounded snout. 
Rostral broad, just visible from above; internasals slightly shorter 
than the prefrontals; frontal a little longer than broad, shorter 
than the parietals; loreal longer than deep; one preocular, in 
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