214 MR. O. A. BOULENGER ON 



Thelotornis hirtlandii Bouleng. t. c. p. 185. 

 Dryiophis kirtlandii I$oca,ge, Herp. Ang. p. 119. 

 Tropical and South Africa. 



12. Oalamelaps. 



Giinth. Ann. & Mag. X. H. (3) xviii. 1866, p. 26 ; Bouleng. 

 Cat. Sn. iii. p. 245. 



Two species : — ■ 



Scales in 19 or 21 rows ; second upper labial not in contact with 



prefrontal C. polylepis. 



Scales in 19 rows ; second upper labial in contact with prefrontal... C. mellandi. 



1. Oalamelaps polylepis Bocage, Jorn. Sc. Lisb. iv. 1873, 

 p. 216, and Herp. Ang. p. 126, pi. ix. fig. 2 ; Bouleng. t. c. p. 246. 



Angola, ISTyassaland. 



2. Oalamelaps mellandi, sp. n.* 

 Lake Bangwelu. 



13. Xenocalamus. 



Giinth. Ann. & Mag. N. H. (4) i. 1868, p. 414 ; Bouleng. Cat. 

 Sn. iii. p. 247. 



Two species : — ■ 



Nasal divided; 6 upper labials, 3rd and 4th entering eye; scales in 



17 rows X. mechovii. 



Nasal entire ; 5 upper labials, 2nd and 3rd entering eye ; scales in 



21 rows X. micJielli. 



1. Xenocalamus mechovii Peters, Sitzb. Ges. Naturf. Fr. 

 Berl. 1881, p. 147 ; Bouleng. t. c. p. 248. 



Congo, Angola. 



2. Xenocalamus michelli L. Midler, Zool. Anz. xxxviii. 

 1911, p. 359. 



Kituri (Katanga). 



14. Apostolepis. 



Cope, Proc. Ac. Philad. 1861, p. 524 ; Bouleng. Cat. Sn. iii. 

 p. 232. 



1. Apostolepis gerardi Bouleng. Rev. Zool. Afr. iii. 1913, 

 p. 103, fig. 



Katanga at Kikondja. 



* No postocular ; parietal forming a suture with the fourth upper labial ; 

 ventrals 181. Uniform blackish. — A single male specimen from Chirini Id., Lake 

 Bangwelu, presented by Mr. F. H. Melland. 



