98 COLUBRID. 
strong lateral keel, 148-162; anal entire; subcaudals 78-92. 
Green or olive above, the skin between the scales black; young 
with black cross bars; lower parts greenish yellow. Specimens a 
and ¢ black above, blackish olive beneath. 
Total length 740 millim.; tail 200. 
West Africa, from Sierra Leone to the Congo. 
a. © (V. 162; C. 90). Sierra Leone. Sir-A. Kennedy [P.]. 
6b. go (V. 150; C. 78). Freetown, Sierra R. Dinzey, Esq. [C.]. 
Leone. 
€, 9:(V. 1593: C.85). Victoria Sherborough Lieut. Bell [C.]. 
Id., Sierra Leone. (Type of Herpet- 
ethvops bellit.) 
d. Yg. (V. 148; C.90). Gold Coast. W. F. Evans, Esq. 
[P.]. 
e. Yg. (V. 156; C. 83). Lagos. 
Ff. (VN. 1a8i4C: 79). Oil River. H. H. Johnston, Esq. 
(Poh 
gy 2 (V. 1575, C..83). W. Africa. Mr. Rich [C.]. 
67. PHILOTHAMNUS. 
Philothamnus, part., Smith, Ill. Zool. S. Afr., Rept. (1840); Peters, 
Reise n. Mossamb, iii. p. 128 (1882); Bocage, Jorn. Sc. Lish. ix. 
1882, p. 1. 
Aheetulla, part., Giinth. Cat. Col. Sn. p. 151 (1858), and Ann. § Mag. 
NV. H. (8) xi. 1863, p. 283. 
Dendrophis, part., Jan, Elenco sist. Ofid. p. 85 (1863). 
Maxillary teeth 25, 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. 
Synopsis of the Species. 
I. Scales in 15 rows. 
A. Subcaudals 110-155. 
Temporals usually 2+2 .......... 1. semivariegatus, p. 99. 
Temporbls lb iG a Meee Fede 2. nitidus, p. 100. 
Peitporals Ur Bee gH oe dee ate 3. dorsalis, p. 101. 
B. Subcaudals 163-175 ........ 4, thomensis, p. 101. 
II. Scales in 13 rows .......s.... 5. girardi, p. 102. 
