38 MARINE SHELLS OF SOUTH AFRICA. 



EISSOA NIGRA, Krauss, Sudafr. Moll. p. 86, pi. 5, fig. 19. 

 Algoa Bay and Table Bay (Krauss). 



EISSOA (ALVANIA) ARGENTEA, Sowerby, nov. sp., pi. 1 1 , 

 fig. 40. Testa acmninato-ovata, imperforata, argenteo-nitens, 

 pellucida ; spira acutiuscula, gradata ; anfractus 6, convexi, 

 liris approximatis, leviter granulatis (in anfr. penult. 4-5, in 

 anfr. ult. eirc. 8), sculpti, superne longitudiualiter plicati ; 

 aufractus ultimus leviter inflatus ; apertura ovata ; peristoma 

 simplex ; columella arcuata. 



Long. 2, diam. maj. 1^ mill. 



Hab. Port Elizabeth. 



A beautiful little shining silvery shell, not regularly 

 latticed like R. fenestrata, but with the spiral ridges much 

 more prominent than the longitudinal plaits, which are nu- 

 merous and visible only on the upper half of the whorls. 



EISSOA (CINGULA) CAPENSIS, Sowerby, nov. sp., pi. 2, fig. 

 41. Testa ovata, anguste perforata, fulvo-cornea, zona lata 

 fnsca cincta ; spira breviter turrita, acutiuscula, sutura pro- 

 funda ; anfractus 5^, Iseves, convexi ; anfractus ultimus 

 spiram paulo superans, leviter inflatus ; apertura ovata, infra 

 angulata ; peristoma simplex. 



Long. 2, diam. maj. 1^ millim. 



Hab. Port Elizabeth. 



A smooth horny umbilicated species with a single broad 

 brown band. 



CAECUM GLABRUM, Montagu, Sowb. 111. Index Brit. 

 Shells, pi. 15, fig. 7. Port Elizabeth. 



TURRITELLA CARINIFERA, Lamarck, Eeeve, Conch. Icon, 

 sp. 12 Natal, Table Bay and Port Elizabeth. 



TURRITELLA BACILLUM, Kiener, Eeeve, Conch. Icon. sp. 7. 

 -Natal Bay (Krauss). This species is widely distributed in 

 the Indian and Pacific Oceans. I have not met with it among 

 South African shells. 



TURRITELLA CAPENSIS, Krauss., Sudafr. Moll. p. 106, pi. 6, 

 fig. 8. Table Bay (Krauss). 



TURRITELLA KNYSNAENSIS, Krauss, Sudafr. Moll. p. 106, 

 pi. 6, fig. 9 ; Knysna (Krauss). Port Elizabeth (Crawford). 



TURRITELLA EXCAVATA, Sowerby, Proc. Zool. Soc. 1870, 

 p. 252, pi. 21, fig. 3. Aghulhas Bank. 



