98 COLrBRIDJE. 



strong lateral keel, 148-162 ; anal entire ; subcaudals 78-92. 

 Greeu or olive above, the skin between the scales black ; young 

 with black cross bars ; lower parts greenish yellow. Specimens a 

 and c black above, blackish olive beneath. 



Total length 740 millim. ; tail 200. 



West Africa, from Sierra Leone to the Congo. 



a. 2 (V. 1G2 ; C. 90). Sierra Leone. Sir A. Kennedy [P.]. 



b. S (V. 150 ; C. 78). Freetown, Sierra E. Dinzey, Esq. [C.]. 



Leone. 



c. 5 (V. 159 ; C. 85). Victoria Sherborough Lieut. Bell [C.]. 



Id., Sierra Leoue. (Type of Herpet- 



(Ethiopi helm.) 



d. Yg. (V. 148 ; C. 90). Gold Coast. W. F. Evans, Esq. 



[P.]. 



e. Yg. (V. 156; C. 83). Lagos. 



/. $ (V. 158; C. 79). Oil River. H. H. Johnston, Esq. 



[P.]. 

 «7. 2 (V. 157; C. 83). W.Africa. Mr. Rich [C.]. 



67. PHILOTHAMNUS. 



Philothamnus, part.. Smith, III. Zoo]. S. Afr., Sept. (1840) ; Peters, 

 Meise n. Mossamb. iii. p. 128 (1882) ; Bocage, Jorn. Sc. Lisb. ix. 

 1882, p. 1. 



Ahfetulla, part., Giinth. Cat. Col. Sn. p. 151 (1858), and Ann. 8( Mag. 

 N. H. (3) xi. 1863, p. 283. 



Dendrophis, part., Jan, Elenco sist. OJid. p. 85 (1863). 



Maxillary teeth 2.5, posterior longest ; mandibular teeth subequal. 

 Head elongate, distinct from neck ; eye large, with round pupil. 

 Body cylindrical ; scales smooth, with apical pits, in 13 or 15 rows, 

 disposed obliquely, at least on the anterior part of the body; ventrals 

 with a suture-like lateral keel, and a notch on each side correspond- 

 ing to the keel. Tail long ; subcaudals in two rows, keeled and 

 notched like the ventrals. 



Tropical and South Africa. 



Synojjsis of the Sjiccies. 



I. Scales in 15 rows. 



A. Subcaudals 110-155. 



Temporals usually 2 -(-2 1. semivariegatns, p. 99. 



Temporals 1 + 2 2. nitldus, p. 100. 



Temporals 1 4- 1 3. dorsahs, p. 101. 



B. Subcaudals 163-175 4. thomensls, p. 101. 



II. Scales in 13 rows 5. girardi, p. 102. 



