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Show 18 DR. J. ANDERSON ON MAMMALS, REPTILES, [Jan. 5 black margins of the scales on the nape tend to form longitudinal lines. No. 1. Snout to vent 83 millim., tail 60, hind limb 17- No. 2. „ „ „ 83 „ „ 451, „ „ 17. This species is distinguished from C. sepoides (Plate I. figs. by the nostril not being placed in advance of the suture between the first labial and the rostral; by the fifth labial entering the orbit, whereas in C. sepoides it is the fourth that does so ; and by 28 rows of scales round the body, whilst in that species these scales never exceed 24. The ear is much the same as in C. sepoides, but it is very different from the ear of C. ocellatus and that of C. mionecton, in which it a round well-marked opening, further removed from the angle of the mouth. It is linked by the character of its labial edge and rostral to C. sphenopsiformis (Senegambia), which through C. mionecton connects it with C. ocellatus. It thus supplies a link that was wanting in the chain of these species, so to speak. I have much pleasure in connecting Mr. Boulenger's name with this new lizard from Barbary. Suborder II. RHIPTOGLOSSA. Family I. CHAM^ELEONTID^E. Genus C H A M E L E O N , Laurenti. 1. C H A M E L E O N VULGARIS, Daudin; Boulenger, loc. cit. p. 142. 1, Tamerna, Sahara; 3, Duirat, Tunisia. Suborder III. OPHIDIA. Family I. COLUBRID^E. Genus ZAMENIS, Wagler. 1. Z A M E N I S ALGIRUS, Jan ; Boulenger, loc. cit. p. 147. 2 specimens, Duirat, Tunisia. No. 1. Total length 1000 millim., tail 250. Ventrals 218, sub-caudals 104. No. 2. Total length 920 millim., tail 200. Ventrals 231, sub-caudals 87. In the first specimen there are 8 upper labials on one side and 9 on the other, but in No. 2 there are 9 upper labials on both sides. In No. 1 the fifth labial enters the orbit on the left side, but on the right side the labials are excluded from touching the eye; and in No. 2 a labial, the fifth, enters the orbit on one side only, being excluded on the other by an additional subocular, the labial entering the orbit when there are only two suboculars. The preeocular in these specimens has generally two small scales below it separating it from 1 Renewed. |