yo COLnBKIDiE. 



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

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

 vnth black cross bars ; lower parts greenish yeUow. Specimens a 

 and c black above, blackish olive beneath. 



Total length 740 millim. ; tail 200. 



West Africa, from Sierra Leone to the Congo. 



a. 5 (V. 162 ; 0. 90). Sierra Leone. Sir A. Kennedy [P.]. 



b. cS (V. 150 ; C. 78). Freetown, Sierra R. Dinzey, Esq. [O.J. 



Leone. 



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



Id., Sierra Leone. (Typ6 of Serpet- 



cethiops bellii.) 



d. Yg. (V. 148; 0.90). Gold oast. W. F. Evans, Esq. 



[P.]. 



e. Yg. (V. 156; 0.83). Lagos. 



/. P (V. 168; 0.79). Oil River. H. H. Johnston, Esq. 



[P.]. 

 §■.$ (V. 157; 0.83). W.Africa. Mr. Rich [0.]. 



67. PHILOTHAMNUS. 



Philothamnus, part.. Smith, III. Zool. 8. Afr., Mept. (1840) ; Peters, 

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

 1882, p. 1. 



AhEetuIla, part,, Giinth. Cat. Col. 8n. p. 151 (1858), and Ann. 8f Mag. 

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



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



Maxillary teeth 25, posterior longest ; mandibular teeth subeqnal. 

 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. 



Synoj>sis of the Spedes. 



I. Scales in 15 rows. 



A. Subcaudals 110-155. 



Temporals usually 24-2 1. semivariegatws, p. 



Temporals 1 -|- 2 2. nitidus, p. 100. 



Temporals l-)-l 3. dorsalis, p. 101. 



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



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



