70 



OPHIDIA {cont). 



CoLUBUiD^ (cont.) ... 6 



Tarbophis 2 species. 



Ccelojieltis 2 species. 



Psammophis 2 species. 



12 



ViPEKID.E. 



Vipera 1 species. 



Cerastes 1 species. 



IJchis 2 species. 



From tlie succeeding Lists of Arabian Eeptiles and the analyses 

 accompanying them, it will be seen that 21 species are found in 

 Arabia and nowhere else. Leaving these out of consideration, 

 and also Hemidacttjlusjlaviviridis, Riippell, Zamenis diadeina, Schl., 

 and Echis carinaftis, Schn., all of which have a wide distribution, 

 embracing the greater part of India and North Africa, 55 species 

 remain, and of these only 13 are not found in Africa ; so that 

 the fauna has a most marked African character. Of the remaining 

 42 species, 23 are found in the Nile Valley, viz. : — Testudo leitliii, 

 Gthr., Stenodacfijlus elerians, Fitz., Bunopus Manfordli, Sti'auch, 

 Gymnodactjjlus scaher, Heydeu, Ptyodactylus Jiasselquistii, Donn- 

 dorf, Tarentola annularis, Is. GreoiTr., Arjama sinaita, Heyden, 

 Agama pallida, Heuss, JJromastix cegyptius, Hasselq. & Linn., 

 Varanus griseus, Daud., Acantliodactylus hoslcinnus, Daud., 

 Acantliodactylus scutellatiis, Aud., Eremias guttulata, Licht., 

 Eremias ruhropunctata, Licht., Mahuia quinquetceniata, Licht., 

 Chalcides {S.) sej^oides, Aud., Chamceleon calgp)tratus, A. Dum., 

 Zamenis rJiodorliacliis, Jan, Lytorhynchus diadema, J). & 13., 

 Tarbopliis dhara, Forsk., Ccelopeltis moilensis, Eeuss, Psammophis 

 schokari, Forsk., and Cerastes cornutus, Hasselq. & Linn. The 

 affinity, however, of the North- Western portion of the Arabian 

 fauna with that of Lower Egypt is further manifested by the 

 presence in it of the species which enter the Nile Valley I'rom 

 the north, viz. : — Agama sfelUo, Hasselq. & Linn., Eryx jaculus, 

 Hasselq. & Linn., and Oligodon melanocephalus, Jan, and by the 

 occurrence of the Mediterranean species Hemidacfylus turcicus, 

 Linn., Tarentola mauritanica, Linn., Chalcides (G.) ocellatus, 

 Forsk., ChamcBleon vulgaris, Daud., and Ccelopeltis monspiessulana, 

 Hermann ; so that if these be added to the 23 already enumerated, 

 31 species, so far, are common to Egypt and Arabia. But the 

 affinity of the two faunas is still further emphasized by a consider- 

 ation of the species that are distributed between the Nile aud the 

 Eed Sea. The following species occur in the Southern end of 

 that area, viz. : — Pristurus flavipunctatus, Eiippell, Pristurus 

 crucifer, Val., Ilemidactylus sinaitus, Blgr., Blabuia hrevicollis, 



