1880. J MR. CRAVEN ON SHELLS FROM USAMBARA. 219 



thin, entire, very slightly reflexed outwardly near the umbilicus ; 

 umbilicus very large and deep ; suture very deep ; operculum normal, 

 of a dark-brown colour. 



Dimensions: — Greatest diameter 12 millims., smallest diameter 

 10|, height from base of aperture to apex 0, diameter of aperture 5. 



Locality, Magila, in woods. 



Lanistes farleri, sp. nov. (Plate XXII. fig. 7.) 



Shell turbinate, sinistral, imperforate, globose; colour varying from 

 olive-green to brownish black, irregularly and coarsely spirally stri- 

 ated and ornamented with numerous spiral bands of various colours, 

 chiefly sienna and purple ; lines of growth very apparent and to- 

 gether with the spiral striae giving the shell a subgranose appear- 

 ance ; whorls \\ to 5, very convex and somewhat tabulated above ; 

 aperture semilunar ; labrum thin, simple ; columella oblique, with a 

 faint subtruncation near its base; operculum thin, deep brownish 

 black; muscular scar large. 



Dimensions : — Greatest diameter 21 millims., smallest diameter 1 7, 

 height from base of aperture to apex 25, height of aperture 16, 

 breadth of aperture 10. 



Locality. Magila, exceedingly numerous in a stream of running 

 water. 



I associate this shell with the name of the Rev. J. Farler, of the 

 Universities Mission station at Magila. 



Melania ferruginea. Lea, P. Z. S. 1850, p. 182; Reeve, 

 Con. Icon. xxi. sp. 147. 



Locality. Umba (between Marongo and Magila), in an almost 

 dried up watercourse. 



Melania zanguebarensis. Petit, Journ. d. Conch, vol. ii 

 p. 263, pi. vii. fig. 1. 



A small variety. 



Locality. Magila, together with Lanistes farleri ; very abundant. 



EXPLANATION OF PLATE XXII. 



Fig. 1 a-e. Cyclophorus tnagilensis, p. 218. 



2 a-c. Pupa usambarica, p. 218. 



3 a, b. Bulinms magilensis, p. 217. 



4 a-c. Helix sanguebarica, p. 217. 



5 a-e. Pahcdina colbcaui, p. 216. 



6 a-c. Helix usambanca, p. 216. 

 1 a-d. Lanistes farleri, p. 219. 



8 a, b. Achatina mamillata, p. 215. 



9 a-c. Achatina kirki, p. 218. 

 10 a-d. Pupa cafoeicola, p. 215. 



