200 REPTILES. 



Scales in twenty-nine or thirty-one rows. Head with two 

 whitish streaks on each side, sometimes extending along the sides 

 of trunk (B. lineatum, D. & B.). 



Var. A. capensis. 



a. Adult. West Africa. From Mr. Rich's Collection. 



b. Young and egg. Cape of Good Hope. 



c. Adult. Africa. From Mr. Argent's Collection. 



Var. B. lineata. 



(/. Adult. Ashantee. From the Leyden Museum as Lye. geo- 



metricus, but with twenty-nine rows, 

 e. Adult. Coast of Guinea. 



/. Adult : not good state. Africa. From the Haslar Collection'. 

 g. Young. Africa. From Mr. Bartlett's Collection. 

 h. Half-grown : bleached. Africa. 



7. Holuropholis, Dumeril. 



Body rather slender, rounded, tail moderate ; head moderate, 

 tlat above, rounded in front; pupil elliptical, erect; rostral 

 shield rounded above, not reaching the surface of head ; anterior 

 frontals small, posterior large ; vertical moderate, with conver- 

 gent lateral edges ; two nasals, nostril between ; one loreal, one 

 anterior, two posterior oculars. Scales smooth, short, rhomboid, 

 rather small, in 25 rows. Anal and subcaudals entire. Western 

 Africa. 



Holuropholis, A. Dumeril, I. c. p. 465. 



1. Holuropholis olivaceus. 

 A. Dumeril, I.e. p. 4(i(>. 

 Uniform blackish ash, beneath paler. 



a. Adult. West Africa, Niger Expedition. From Mr. Eraser's 



Collection. 



b. Half-grown. West Africa, Niger Expedition. From Mr. 



Eraser's Collection. 



c. Adult : not good state. West Africa. 



Description. — Body moderate, rather slender ; tail moderate, 

 not distinct from trunk, tapering ; head moderate, with flat crown 

 and rounded muzzle, rather distinct from neck ; eye rather small, 

 with elliptical, erect pupil. Rostral broad, triangular, not reach- 

 ing the surface of head ; anterior frontals small, spheroidal ; pos- 

 terior ones much larger, bent on the sides ; vertical five-sided, 

 with convergent lateral edges ; occipitals rather small, rounded 

 behind ; two posterior oculars ; anterior one large, reaching the 



