84, RISSOIDZ. 
40. Rissoina media, 
Rissoina media, Schwartz von Mohrenstern, Denks. K. Ak. Wissens. Wien, 
ATX, 1860, Ceylon and Java, also Nicobars—tiong, 4-7, diam, 2 mil. 
100 Ceylon [42,2 mil.], Arakan, Andamans, and Aden; coll, Dr. Sto- 
liczka, J. Wood-Mason and G. Nevill, Esqrs. : 
var. P 
20 Mauritius; coll. G. Nevill, Esq. 
1 Seychelles ; coll. G. Nevill, Esq, (83, 14]. 
41. Rissoina, u. sp. 
Long. 44, diam, 14 mil. 
3 Tumb I. [Persian G.]; coll. W. T. Blanford, Esq. 
42. Rissoina samcensis, 
Fissoina samensis, Dunker, Cat. Mus. Godeffroy, 1874, Upolu ; and Conch.- 
Cab. IL, pl. t5e, fig. 1—long. 4, diam, 14 mil. 
1 Upolu [typical] ; ex Mus. Godeffroy. 
43, Rissoina exasperata. 
Rissoina exasperata, Souverbie, J. de C, XIV, 1866, N. Caledonia, anfr.8 to 
9—long. 34 to 44, d. 1% to 12 mil. 
1 South Sea Islands ; ex Mus. Godeffroy. 
1 Singapore; coll. Dr. Stoliczka. 
12 Mauritius; coll. J. B. Baxter and G. Nevill, Esqrs. [4, 1}]. 
1 Arakan; coll. W. T. Blanford, Esq. 
5 N. Caledonia ; ex c. P, Bouvier, Esq. 
44. Rissoina seguenziana, 
Rissoina seguenziana, Issel, Malae. Mar. Rosso, 1869, and Deser. de V Egypte, 
Pl. IV, fig. 8, @. Suez—anfr. 9 to 10; long, 5, diam. 12 mil. 
15 Kharg (4, 12), Tumb I. and Bombay ; coll. W. T. Blanford, Esq. 
82 Mauritius (5, 2), Aden, and Seychelles; coll, G. Nevill, Esq. 
20 Roweiah (43, 12); coll. J. B. Baxter, Esq. 
var. parvula, nov. 
Long. 34, diam. 1} mil, 
20 Annesley Bay ; coll. W. T. Blanford, Esq, 
