74 RISSOIDE. 
subvar. cincta. 
Rissoina cincta, Dunker, Cat. Mus. Godef. IT, 1869, Upolu; op. cit. V, as var 
of R. pusilla. 
13. Mauritius, Ceylon, Arakan and Andamans; coll. W. T. Blanford, 
J. B. Baxter, J. Wood-Mason, aud G. Nevill, Esqrs, 
var. perpusilla, nov. 
Long 35, diam. 14 mil. 
26 Mauritius [type var.] ; coll. G. Nevill, Esg. 
3 Bombay and Henjam [Persia] ; coll. W. ‘IT. Blanford, Esq. 
var. myosoroides. 
R. myosoroides, Recluz, fide Schwartz, pl. IT’, fig. 80, Mauritius, 
80 Arakan, Mauritius, Ceylon, Natal, Andamans, and Singapore; coll. 
F, Stoliczka, J. Wood-Mason, aud G. Nevill, Esqrs. 
2. Rissoina pusilla. 
Turbo pusillus, Brocchi, Conch, foss. IT, 1814. 
3 Steinabrun [fossil]; coll. Herr G. Schwartz von Mohrenstern, 
The callosity of the outer lip and the twist of the columella 
are much more developed than in the preceding species; it is, 
however, most closely allied and perhaps scarcely specifically 
separable ! 
3. Rissoina woodmasoniana, n. sp. 
1 Andamans [type] ; coll. J. Wood-Mason, Esq. 
A single living specimen of this remarkable new form was 
dredged by Mr. Wood-Mason, if I remember rightly, in deep 
water. Nine whorls, cylindrical and “needle-like,” the apical 
three smooth and colourless, the others longitudinally closely 
ribbed, ribs thick, flexuous and irregular; of a uniform brown 
colour throughout; columella straight, aperture contracted 
subangulate at base, not notched, resembling that of species 
of Zippora. 
Long. 3, diam. $ mil. 
