152 ACTION. 



A. ALBUS Sowerby. PL 18, fig. 81. 



Shell oblong-ovate, subpellucid, white, transversely punctate sul- 

 cate throughout. Suture impressed. Aperture elongate-ovate ; col- 

 umella with one fold. (Sowb.). 



Port Elizabeth, S. Afri<-. 



Tornatella alba Sown., P. Z. S. 1873, p. 720, pi. 59, f. 6 ; Journ. 

 of Couch. 1886, v, p. 15.A<-t,n,n <ilbus SOWB., Marine Sh. S. Af., 

 p. 51. 



A pure white semitransparent species, regularly grooved and 

 beautifully punctured throughout. (Soivb.). 



A. 8EMISCULPTU8 Smith. PI. 18, fig. 97. 



Shell ovate, turrited, small, shining, snow-white; very narrowly 

 rimate; smooth above, rather distantly puncto-striate transversely 

 below the middle, and on the base more closely striated ; sculptured 

 longitudinally with a few indistinct, distantsulci. Whorls 4, lightly 

 convex, separated by a narrow channelled suture. Apex involute. 

 Aperture inversely ear-shaped, a little more than half the shell's 

 length ; columella narrowly reflexed, bearing a small fold at the 

 rimation. Alt. 4, diam. 2'25 mill. (Sm.). 



St. Helena. 



A. semisculj.fu.* E. A. SMITH, P. Z. S. 1890, p. 298, pi. 24, f. 8. 



The spiral transverse punctured strise do not extend above the 

 middle of the body-whorl. The longitudinal narrow and shallow 

 indistinct sulci apparently indicate lines of growth. (/S.). 



A. HI.M Q M.KNSIS Petit. PI. 18, figs. 90, 91. 



Shell elongated, cylindrical, thin, subpellucid, white. Spire tur- 

 rit* <1, acute. Whorls 7, regularly tr;m>versely striated. Columella 

 obliquely uniplicate. Length 17, diam. 6 mill. (Petit.'). 



Month of the (inmbiii /,'/'/. 11". Africa, 



I '< lla scHwjalensiB PKTIT, Journ. de Conchyl. ii, p. 262, pi. 8, 



nch. icon, xv, pi. 3, f. 14. 



The elongated form, thinness of the shell, and the obliquity of 

 the columellar fold are the distinguishing features of this form. 



A. IORMATILU Linn.'. I'l. 1'.'. <i->. 7-11, 15. 



Shril 1 , with conical acute spire and impressed sutures 



the whorls but little convex. Color pinkish with a light girdle 



