36 MARINE SHELLS OF SOUTH AFRICA. 
CERITHIUM FOVEOLATUM, Sowerby, nov. sp., pl. 1, fig. 27. 
—Testa minima, acuminata, sordide albida; spira acuminata; 
anfractus 10, leviter convexi, sutura leviter impressa sejuncti, 
cancellati, profunde seriatim foveolati; anfractus ultimus 
curtus, ad basin leviter contractus; apertura breviter 
expansa; columella leviter contorta. 
Long. 4 millim. 
Hab. Port Elizabeth. 
A little dull white species, the surface of which is 
deeply punctured. 
CERITHIDEA DECOLLATA, Linn., Thes. Conch. vol. ii. pl. 186, 
fig. 276.—Port Elizabeth (Crawford), Natal (Krauss), 
Zanzibar, Madagascar, Mauritius, Xe. 
TRIFORIS CARTERETENSIS, Hinds, Zool. Voy. Sulphur, 
Moll. p. 29, pl. 8, fig. 17. — Natal coast (Krauss). 
TRIFORIS PERVERSUS, Linn., Sowb. Ill. Index Brit. Shells, 
pl. 15, fig. 10.—Port Hiizabeth (Crawford), This  well- 
known European species is of very wide distribution. 
TRIFORIS CINGULATUS, A. Adams, Proc. Zool. Soe. 1851, 
p. 279.—Cape of Good Hope. 
LITTORINA KNYSNAENSIS, Arauss, Philippi, Conch. vol. xi. 
p- 196, pl. 4, fig. 4.—Port Elizabeth. This is a variable 
species and includes L. africana, Krauss. 
LirrorIna NATALENSIS, Avrauss, Philippi, Abbild, u. 
Beschr. n. Conch. vol. ii. p. 160, pl. 3, fig. 4.—Algoa Bay 
and Natal coast (Krauss). 
LIrTORINA DECOLLATA, Avrauss, Phil. Conch. vol. ii. 
p. 196, pl. 4, fig. 3.—Natal coast (Krauss). 
LIrrorIna AHENEA, Reeve, Conch. Icon. sp. 15.—Port 
Elizabeth. Of very wide distribution in the Atlantic, 
Pacific, and Indian Oceans. 
LitTorINa 21GZAc, Chemnitz, Reeve, Conch. Icon. sp. 57. 
—Natal coast (Crawford). 
Lirrorina ASPERA, Philippi, Proc. Zool. Soe. 1845, 
p. 139; Tryon, Man. of Conch. vol. ix. pl. 44, figs. 80-85 Ke. 
