BURNUP : ox S. AFEICAX LAND SHELLS. 303 



suture well above the columella, and completely covering the umbilical 

 region. 



Long. 12, lat. 5-2 mm. 



Hah. — Makowe, Zululand, Natal (J. Crosly). 



This beautiful shell is much the largest of the South Afi'ican 

 Curvellce yet discovered, and I have much pleasure in naming it after 

 the discoverer, Mr. J. Crosly. 



It is a thin, white, shining shell of six whorls, of which the three 

 last are rather ventricose, and the three upper flatter. The irregular 

 transverse sculpture, following the line of growth, which, like the 

 outer lip, is well curved forward, is easily seen with a weak lens ; 

 while the fine spiral sculpture is only visible under a strong magnifier. 



With the type are four ' dead ' specimens, probably not quite mature, 

 the largest measuring only 10-5 mm. in length, in which the umbilicus 

 is open and the callus not well developed, but in other respects they 

 agi'ee with the tvpe. I have also before me two of the calcareous 

 eggs which were syringed from the shell ; they are white, nearly 

 spherical, and measure about l"3mm. in diameter. 



CURVELLA STEAMINEA, U.Sp. PI. XVI, FigS. 5, 6. 



Shell oblong-ovate, umbilicate, thin, shining, straw-coloured, sub- 

 translucent ; with b^ rather ventricose whorls, impressed at the 

 sutures, ornamented with close, clear, fine, arched, transverse striae ; 

 aperture oval ; peristome thin, simple, triangularly reflexed over the 

 naiTow umbilicus ; columella and callus white, the former being 

 slightly curved inwards at the base. 



Long. 6'5, lat. 2'75 mm. 



Hah. — Walmer, near Port Elizabeth, Cape Colony (Miss Hickey). 

 Several specimens. 



This pretty little species is more elongate and slender than its South 

 African allies, and is conspicuous by its straw colour and distinct 

 sculpture, which follows the arcuate contour of the outer lip. 



CunvELLA succixEA, u.sp. PI. XYI, Figs. 7, 8. 



Shell oblong-ovate, narrowly umbilicate, pale horn colour, thin, 

 shining, translucent ; with 5^^ slightly ventricose whorls ; not much 

 impressed at the sutures, nearly smooth, with faint, and very slightly 

 cui^ved, transverse sculpture crossed with very close, microscopic, 

 spiral striae ; apex rather blunt ; aperture oval, about one-third of the 

 length of the whole shell ; peristome thin, simple, reflexed, and 

 entire, covering, but not closing, the umbiKcus ; columella and callus 

 pale straw colour. 



Long. 5*75, lat. 2".5mm. 



Hab. — Maestriim Forest, Bedford, Cape Colony ;^J. Farquhar). 



This delicate little shell, though much resembling in general 

 appearance the last species described ( C. straminea), is easily dis- 

 tinguished fi'om it by its smaller size, richer colour, smoother surface, 

 less ventricose whorls, and shallower sutures, while the fine, micro- 

 scopic, spiral striae, only to be seen with the aid of a strong lens, are 

 not traceable in C. strammea, and the characteristic arch of the outer 

 lip is not so pronounced in this as in the last-named species. 



