| OCR Text |
Show 1892.] AND BATRACHIANS F R O M BARBARY. 19 the labials. The temporals also are variable, as in No. 2 they 34-3 on one side and 2 + 3 on the other. The number of sub-caudals in No. 1 exceeds the maximum given by Mr. Boulenger, and its anal is entire, while in No. 2 these plates fall below the minimum recorded by him. His figures are 92-100. Their coloration is normal. 2. ZAMENIS HIPPOCREPIS, Linnaeus; Boulenger, op. cit. p. 147- 1 specimen, Hammam Meskoutine, Province of Constantine; 1 specimen, neighbourhood of Algiers. In the first specimen there are 10 upper labials on one side, and two temporals in contact with the postoculars. 3. ZAMENIS DIADEMA, Schlegel; Boulenger, op. cit. p. 148. 1 specimen, Duirat, Tunisia; 1 specimen, between Biskra and Tuggurt. The snake from Duirat has 25 rows of scales, and the Biskra- Tuggurt specimen 32. The head-shields present some of the variations usual to this species. The Duirat specimen has the pale yellowish sandy coloration of a desert form ; the typical dark rhombic markings are distinct, but the horn-colour has a faded appearance. Genus TROPIDONOTUS, Kuhl. 4. TROPIDONOTUS VIPERINUS, Latr.; Boulenger, loc. cit. p. 149. 1 specimen, Hammam R'irha, Province of Algiers; 1 specimen, Biskra ; 6 specimens, between Biskra and Tuggurt; 1 specimen, Duirat, Tunisia. The first specimen has the rare variation of 23 rows of scales. Genus MACROPROTODON, Guichenot. 5. M A C R O P R O T O D O N CUCULLATUS, Geoffroy ; Boulenger, loc. cit. pp. 149, 150. I specimen, Hammam Meskoutine, Province of Constantine, among stones. Total length 539 millim., tail 93. Ventrals 171 ; subcaudals 54. It has 19 rows of scales, which is generally the case in Algerian and Tunisian specimens, as pointed out by Mr. Boulenger. Genus PSAMMOPHIS, Boie. 6. PSAMMOPHIS SIBILANS, Linnaeus ; Boulenger, foe. cit. p. 150. 1 specimen, Duirat, Tunisia. Total length 975 millim., tail 341. Ventrals 179; subcaudals 131. A partially divided praeocular on each side; 9 upper labials, the 5th and 6th entering the orbit, as in the case of all Algerian and Tunisian specimens found by M- Lataste. |
