144 TAYLOR : NEW E. AFRICAN LAND SHELLS. 



four whorls is produced and hardly distinguishable from the rest 

 of the shell, it tapers rapidly to an acute point: suture deep, barely 

 oblique: mouth ovato-triangular, small and vertical, as broad 

 behind as high; peristome white, reflected outwards, internally 

 thickened and forming several teeth, viz. : — a parietal plate, thin 

 triangular, commencing at the inflexed end of the outer lip and 

 running somewhat obliquely inward, palatal teeth two in number, 

 one a large obtuse tubercle about the middle of the outer lip and 

 opposed to the parietal plate; the second anterior, small, deeply 

 seated, sometimes undistinguishable: columellabearsone triangular 

 tooth about the middle and a deeply seated tubercle at the angle : 

 umbilicus distinct, somewhat tubular. 



Length, o"i35; breadth 0-075. 



Rare (dead only) at Zanzibar, among grass and bushes, with 

 other shells. 



Pupa (Ennea) sex-dentata, n. s. (PI. i, f. 5.) 



Shell cylindrical rather narrow, very faintly striulate 

 obliquely, whorls 7, flattened, inflexed behind^ the last con- 

 siderably enlarged, rounded, the next three about equal in 

 size, flat, sharply inflexed towards suture posteriorly, spire 

 of about 3 whorls depressed, apex distinct : suture .oblique, 

 very deep and distinct : mouth rather lateral, large, quadrate, 

 as broad as high, peristome reflected outwards, internally 

 thickened, teeth six in number, parietal plate arises from inflexed 

 end of outer lip and runs obliquely inwards, curved a little 

 towards the columellar side, palatal teeth two, very distinct, 

 sharp and triangular, columellar teeth are two conical sharp- 

 pointed tubercles arising from a common base about the middle; 

 another smaller and also pointed, arises from anterior end of 

 aperture: umbilicus deep and tubular. 



Length, 0-19; breadth, 0^075. 



Found but one specimen at Zanzibar among other Pup(£, &c. 



