448 AMPHISB.ENID.E. 



hundred and thirty-four anuuli on the body (200, Dum. 4" Bihr., 

 217 to 233, Strauch), twenty-nine on the tail ; an annulus in the 

 middle of the body contains thirty-four segments, twenty above and 

 fourteen below the lateral lines ; the dorsal and lateral segments 

 much longer than broad, the two median ventrals about twice 

 and a half as broad as long. Lateral line distinct ; a slight 

 vertebral line. Anal segments eight; praeanal pores eight [to ten]. 

 Brownish, a little lighter inferiorly. 



millim. 



Length to vent 195 



Tail 27 



Diameter of body 5*5 



West Africa. 



a. Ad. Calabar. 



22. Amphishsena muelleri. 



Cynisca, sp., F. Muller, Verh. Natiirf. Ges. Basel, vi. 1878, p. 704, 



pi. ii. fig. c. 

 Amphisbfena miilleri, Strmich, Mel. Biol. Ac. St. Petersb. xi. p. 389. 



Allied to the preceding ; differs in the following points : — Xasal, 

 prcefrontal and anterior labial united into a single shield ; frontal 

 small, triangular ; no prseocular, no supraocular. Two hundred 

 and twenty-nine to two hundred and forty annuli on the body, and 

 twenty-five to twenty-seven on the tail ; an annulus contains twenty- 

 four or twenty-six segments, twelve on the dorsal side and ten or 

 twelve on the ventral. Six anal segments ; twelve praeanal pores. 



Length to vent 175 millim., tail 20 millim. 



Gold Coast ; Sierra Leone. 



23. AmpMsbsena leonina. 



Amphisbsena leonina, F. JIuller, Verh, Katurf. Ges. Basel, vii. 1885, 

 p. 700, pi. ix. figs. rt-e. 



Also allied to the two preceding species. Nasal, praefrontal, and 

 first and second labials united into a single shield ; frontal small, 

 triangular, followed by a pair of large postfrontals and a pair of 

 occipitals ; no supraocular, no prseocular. Two hundred and forty 

 annuli on the body, twenty on the tail ; an annulus contains twenty- 

 four segments, fourteen on the dorsal side, and ten on the ventral ; 

 latter, two median rows very broad. Six anal segments ; three 

 (four?) praeanal pores. Brown ; lower surface of body whitish. 



millim. 



Length to vent 155 



Tail 15 



Diameter of body 4 



Tumbo Island, Sierra Leone. 



