410 



COLCTBRID^. 



fifth or sixth very rarely entering the eyej 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. Ventrala very distinctly angiilate 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 ofpale 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 milhm. ; tail :;70. 



Spain and Portugal, Sardinia, Morocco, Algeria, Tunisia. 



a. d (Sc. 27 ; V. 222 ; A. 2 

 C. ?). 



b. ? (So. 27 ; V. 2.32 ; A. 2 

 0.107). 



c. Yg. (So. 27 ; V. 228 ; A. 2 

 0. 100). 



d-e. S (So. 27 ; V. 235 ; A. 2 

 C.87)&vg. (Sc.25;V. 229 

 A. 2; C.'OO). . 



f. c? (Sc. 27 ; V. 228 ; A. 2 

 C. ?). 



g. d (Sc. 27; V. 220; A. 1 

 C. 92). 



h-k. Hgr. 2 (Sc. 27 ; V. 232 

 A. 2 ; C. 90) & yg. (Sc. 27 

 27; V. 231, 225; A. 2, 2 

 0. 93, 80). 



I. Hgr. (Sc. 27 ; V. 249 ; A. 2 

 C. 89J. 



m. Yg. (Sc. 27; V. 225 ; A. 2 ; 



p 881 

 n. Yg. (Sc. 27 ; V. 237 ; A. 2 ; 



C. 90). 

 0. Hgr., skel. 



p. Skull. 



Gibraltar. 



Spain. 



Portugal. 



Cagliari, Sar- 

 dinia. 



Mogador. 



Tangier. 



Tangier. 



Hamman 



Meskoutine, 

 Algeria. 

 Algiers. 



Tunis. 



Mogador. 



Algeria. 



College of Surgeons. 

 Lord Lilford [P.]. 

 Dr. A. Farre [P.]. 

 Count M. G. Peracca 



Zoological Society. 

 Mr. Fraser [C.]. 

 Mr. H. Vaucher [C.]. 



Dr. J. Anderson [P.]. 



Dr. J. Anderson [P.]. 

 Mr. Fraser [C.]. 



C. A. Payton, Esq. 



[P.]. 



28. Zamenis dorri. 

 Periops dorri, Lataste, Le Natur. 1888, p. 227. 



Head very distinct from neck, with broadly rounded snout, 

 liostral broad, just visible from above : internasals slightly shorter 

 than the praefrontals ; frontal a little longer than broad, shorter 

 than the parietals; loreal longer than deep; one praeocular, in 



