SOUTH AFRICAN MAEINE MOLLUSKS. 9 



Family APLYSIIDAE. 



Genus TETHYS Linnaeus. 



TETHYS MACULATA Rang. 



Cat. No. 187145, U.S.N.M., two specimens from Port Alfred 

 (Coll. No. 691). 



TETHYS CONCAVA Sowerby. 



Cat. No. 187146, U.S.N.M., one specimen from Port Alfred (Coll. 

 No. 692). 



Cat. No. 249796, U.S.N.M., one specimen from the same locality 

 (Coll. No. 1068). 



TETHYS, species? 



Cat. No. 249792, U.S.N.M., contains two shells of a Tethys, 

 which I am unable to identify, from Port Alfred (Coll. No. 1064). 



Family PHILINIDAE. 



Genus PHILINE Ascanius. 



PHILINE SCHROETERI Philippl. 



Cat. No. 180, U.S.N.M., three specimens collected by William 

 Stimpson, on the North Pacific Exploring Expedition at Simons Bay. 



PHILINE CAPENSIS Bergh. 



Three lots of this species are in the collection of the United States 

 National Museum, all from Port Alfred, as follows : 



Cat. No. 227805, five specimens (Coll. No. 900). Cat. No. 249799, 

 three specimens (Coll. No. 1071). Cat. No. 249800, three specimens 

 (Coll. No. 1072). 



Family OXYNOEIDAE. 



Genus OXYNOE Rafinesque. 



OXYNOE NATALENSIS Smith. 



Four lots of this species are in the collection of the United States 

 National Museum, all from Port Alfred, as follows: 



Cat. No. 187144, two specimens (Coll. No. 690). Cat. No. 227804, 

 two specimens (Coll. No. 899). Cat. No. 250578, two young speci- 

 mens (Coll. No. 1451). Cat. No. 250579, one specimen (Coll. No. 

 1452). 



Shells of five additional species of Opisthobranchs are in the col- 

 lection of the United States National Museum, from Port Alfred. 

 We are unable to identify these from the shells alone. They are: 

 Cat. No. 250584, two shells (Coll. No. 1457). Cat. No. 250587, one 

 specimen (Coll. No. 1460). Cat. No. 250597, one specimen (Coll. 

 No. 1470). Cat. No. 250585, one specimen (Coll. No. 1458). Cat. 

 No. 250598, two specimens (Coll. No. 1471). 



