PLANAXIDA. 179 
3. Styliferina [?] sp. [?] 
1 Singapore ; coll. Dr. F. Stoliczka. 
Of very doubtful generic determination. 
4, Styliferina sp. ? 
3 Andamans ; coll. G. Nevill, Esq. 
Whorls subangulate. 
5. Styliferina sp. ? 
3 Andamans; coll. G. Nevill, Esq. 
Whorls convexly rounded. 
1 Mauritius; coll. G. Nevill, Esq. 
var. (? dist, sp.) 
2 Mauritius ; coll. G. Nevill, Esq. 
The last whorl conspicuously more produced. 
6. Styliferina ? sp. 
2 Mauritius; coll. G. Nevill, Esq. 
Found together in an empty oyster shell on the shore. 
7. Styliferina ? sp. 
7 Hongkong; coll. R. Hungerford, Esq. 
Genus DIALA, A. Adams. 
Ann Mag., VIII, 1861, type D. varia, A. Ad; Smith. P. Zool. 8., 18'5, 
p. 538. 
There are also D. tenuis and simplex, Smith, 1875, from 
Japan; D. succincta, A. Adams, from Suez ; and D. suturalis, 
Philippines and from the Suez. 
1. Diala sulcifera. 
Diala sulcifera, 4A. Adams, Ann, Mag., X, 1862, Japan. 
