Reference List of South African Non-marine Mollusca. 269 
570. AsseMANIA sInica, Nevill. 
1880 Assiminia sinensis, Nev.,Journ.Asiat.Soc. Bengal,xlix,2.p.161. D. 
1887 Assiminea sinica, Nev. (for sinensis, Nev., not chinensis, Pfr.), 
Bttg., Jahrb. d. Deutsch. Mal. Ges. xiv. p. 203. D. 
Type in Indian Museum, Calcutta. 
Hab. Navat. Wydenham ; Umkomaas (Burnup). 
Described from Hong Kong. 
571. ASSEMANIA UMLAASIANA, Smith. [S.A.M.] 
1902 Assiminia wnlaasiana, Smith, Journ. of Conch. x. p. 248. pl. 4, 
feo. LOLI. 
Type in British Museum. 
Hab. Navan. In an ocean cave at Isipingo Rocks, half a mile 
south of Umlaas River mouth (Burnup). 
Orper ASPIDOBRANCHIA, Schweigger, 1820. 
(Naturges. d. Skeletlose Thiere, p. 720, as Aspidobranchiata ; emend. Menke, 1830.) 
Sus-Orper RHIPIDOGLOSSA, Troschel, 1847. 
(Archiv. f. Naturg. xiii, 2. p. 385, and Wiegmann’s Handbuch der Zool., 
Ed. 3. 1848.) 
Famity HYDROCENID, Bourguignat, 1877. 
(Deser. de deux nouveaux Genres Algériens, p. 38.) 
Genus HYDROCENA, Parreyss, 1846. 
(Hermannsen’s Indicis Generum Malac. i. p. 546.) 
Type of Genus, H. cattaroensis (Pfr.). 
572. Hyprocena noticona, Benson. [S.A.M.] 
1856 Hydrocena noticola, Bs., A.M.N.H. xviii. p. 489. D. 
1858 3 , Pfr., Mon. Pneum. ii. p. L56n8 2: 
1897 Assiminea tyttha, M. & P., A.M.N.H. xix. p.639. pli, fie. 
Type of tyttha in British Museum ; noticola—ubt ? 
Hab. Care or Goop Horr. Table Mountain, Camps Bay 
(Layard). Simonstown; Hout Bay (Connolly). Grahamstown ; 
Kowie; Bathurst; Port Elizabeth (Farquhar). 
Navan. Howick (tyéitha) ; Scottburgh ; Karkloof; Dargle ; Game 
Pass ; Ntimbankulu (Burnup). 
The type set of tyttha has been most carefully compared with a 
large series of noticola from Table Mountain, with the result that no 
specific difference has been found between them. 
