SNAKES OF NORTH-EAST AFRICA. 643 



Rostral not extending to the level of the ej^es ; diameter of 



body 100 to 140 times in total length G.filiformis. 



Rostral not extending to the level of the eyes ; diameter of 



body 40 to 48 times in total length G. macrura, 



B. Snout not hooked. 

 Supraocular nearly twice as broad as long ; diameter of body 



50 to 55 times in total length G. emini. 



Supraocular small, longer than broad; diameter of body 38 



times in total length G. reticulata. 



Supraocular small, not or but little broader than long ; diameter 



of body 65 to 90 times in total length G. cairi. 



II. Ocular not bordering the mouth ; diameter of body 42 

 times in total length G. dissimilis. 



1. Glauconia macrorhynchus. 



Stenostoma viacrorhynchurti Jan, Arch. Zool. Anat. Pliys. i. 

 1862, p. 190. 



Glauconia macrorhynchus Bouleng. Oat. Sn. i. p. 61. 

 Glauconia algeriensis Jacquet, Bibl. Anat. iv. 1896, p. 79, figs. 

 Nubia, Algeria, Mesopotamia (?), Persia. 



2. Glauconia filiformis Bouleng. Bull. Liverp. Mus. ii. 1899, 

 p. 7, and Rep. Sokotra Exped. p. 88, pi. xi. fig. 2. 



Socotra. 



3. Glauconia macrura Bouleng. Rep. Sokotra Exped. p. 89, 

 pi. xi. fig. 3. 



Socotra. 



4. Glauconia emini Bouleng. Ann. & Mag. N. H. (6) vi. 1890, 

 p. 91, and Oat. Sn. i. p. 64, pi. iii. fig. 8. 



Oentral and East Africa, as far north as Somaliland and 

 Abyssinia. 



5. Glauconia reticulata Bouleng. Ann, & Mag. N. H. (7) xviii. 

 1906, p. 441. 



Goolis Mts., Somaliland. 



6. Glauconia cairi. 



Stenostoma cairi Dum. & Bibr. Erp. Gen. vi. p. 323. 

 Glauconia cairi Bouleng. Oat. Sn. i. p. 66. 

 Egypt, Nubia, Abyssinia, Somaliland, Mauritania. 



7. Glauconia dissimilis. 



Stenostoma dissimile Bocage, Jorn. Sc. Lisb. xi. 1886, p. 174. 

 Glauconia dissimilis Bouleng. t. c. p. 70. 

 White Nile. 



Family B o i D ^. 

 Two genera : — 



Upper surface of head with shields ; rostral and anterior upper labials 



deeply pitted ; subcaudals in two rows Fytlion. 



Upper surface of head with small scales; tail very short, subcaudals 



single Eri/x. 



