47. SIMOCEPDALUS. 345 



rows enlarged and bicarinatc ; ventrals with a strong lateral keel. 

 Tail moderate ; subcaudals in two rows. Hypapophyses developed 

 throughout the vertebral column. 

 Tropical and South Africa. 



Si/nopsis of the Species. 



I. Frontal but slightly shorter than the parictals ; ventrals 203- 

 241 ; subcaudals 45-Gl 1. capensis, p. 345. 



II. Frontal much shorter than the parictals. 



A. Two postoculars ; ventrals 240 or more. 



Three labials entering the eye ; sub- 

 caudals 00-70 2. r/tiirali, p. 340. 



Tv^^o labials entering the eye ; sub- 

 caudals 75-124 3. poensis, p. 340. 



B. One postocular ; ventrals 178-214 ; subcaudals 59-63. 



Kye much larger than the nostril .... 4. ni/assce, p. 347. 



Eye scarcely larger than the nostril . . 5. stenophthalmus, p. 347. 



1. Simocephalus capensis. 



Ileterolepis capensis, Smii/i, 111. Zuol. S. Afr., JRcpf. pi. Iv. (1847) ; 



Dti7n. ^- Bibr. vii. p. 420 (18.>4) ; Peters, Man. Berl. Ac. 1870, 



p. 119; Mocqunrd, Bull. Son. Philum. (7) i. 1887, p. 22 ; Boulemj. 



Ann. 8f Mag. X. II. (0) viii. 1891, p. 344. 

 gueinzii, Peters, Mvn. Berl. Ac. 1874, p. 104, pi. — . fig. 2; 



Mocquard, I. c. 

 savorgnani, Mocquard, I. c. p. 27, pi. x. fig. 4. 



Rostral broader than deep, just visible from above; interuasals 

 broader than long, two thirds the length of the proef rentals ; frontal 

 a little longer than broad, as long as its distance from the rostral or 

 the end of the snout, slightly shorter than the parictals ; loreal 

 square ; a small prajocular ; two small postoculars ; temporals 1 +2 ; 

 seven upper labials, third and fourth entering the eye ; four lower 

 labials in contact with the anterior chin-shields, which are longer 

 than the posterior. Scales strongly keeled, with secondary keels 

 and tubercles, in 15 rows (17 on the neck). Ventrals 203-241 ; anal 

 entire; subcaudals 45-01, Dark olive-brown above, upper lip, 

 middle of vertebral scales, and ends of lower scales yellowish ; 

 yellowish beneath. 



Total length 930 millim. ; tail 133. 



South-east Africa and Ogowai. 



a. S (Head and anterior ex- Delagoa Bay. S. African Museum [P.]. 

 tremity of body aud tail ; 

 C. 4o). 



