SNAKES OP NORTH-EAST AFRICA. 647 



5. SlMOCEPHALUS. 



Gunth. Cat. Col. Sn. p. 194 ; Bouleng. Cat. Sn. iii. p. 344. 



1. SlMOCEPHALUS BUTLEUi Bouleng. Ann. & Mag. N. H. (7) xx. 

 1907, p. 489, and Ann. Mus. Geneva (3) v. 1911, p. 164. 



Mehehja somcdiensis Lonnb. & Anderss. Ark. f . Zool, viii. 1913, 

 no. 2, p. 2. 



Egyptian Soudan, Southern Ethiopia, Somaliland. 



6. Zamenis. 

 Wagl. Syst. Amph. p. 188 ; Bouleng. Cat. Sn. i. p. 379. 



Syiioiysis of the Species. 



I. Scales ill 15 rows ; veiitnils 173 Z. somalicvs. 



II. Scales in 19 rows. 



Veiitrals 213-262; subcaudals 113-154 Z. rliodorliacliis. 



Veiitrals 159; subcaudals 76 Z. hrevis. 



III. Scales in 21 (rarely 23) rows; two labials entering the eye. 



9 or 10 upper labials ; veiitrals 171-187 Z. smithii. 



9 upper labials ; ventral s 200-228 Z.florulentus. 



8 upper labials ; veutrals 195 Z. citernii. 



IV. Scales in 23 rows ; a single labial entering the eye ; 



ventrals 219-228 Z. socotra. 



1. Zamenis S0MALICU3 Bouleng. Ann. Mus. Genova (2) xvii. 

 1896, p. 11. 



Somaliland. 



2. Zam:enis_rhddorhachis Jan, in De Filippi, Viagg. Pers. 

 p. 356 ; Bouleng. Cat. Sn. i. p. 398. 



Egypt to Somaliland ; S.W. Asia. 



3. Zamenis brevis Bouleng. Ann. Mus. Genova (2) xv. 1895, 

 p. 13, pi. iii. fig. 3, and Cat. Sn. iii. ji. 623. 



Somaliland. 



4. Zamenis smithii Bouleng. P. Z. S. 1895, p. 536, pi. xxx. 

 fig. 2, and Cat. Sn. iii. p. 624. 



Somaliland. 



5. Zamexis florulentus. 



Coluber jiorulentus Geoffr. Descr. Egypte, Kept. p. 146, 

 pi. viii. fig. 2. 



Zamenis Jiorulentus Bouleng. Cat. Sn. i. p. 402. 

 Egypt to Somaliland. 



6. Zamenis citernii Bouleng. Ann. Mus. GenoA^a (3) v. 1912, 

 p. 331. 



Somaliland. 



