114 RISSOIDE. 
1. Fenella rufocincta. 
Dunkeria rufocincta, 4. Adams, Ann. Mag. VIII, 1861, Mososeki, Tabane 
and Takano-Sima; Suez, fide W Andrew. 
2 Japan; ex Mr. R, Damon [“ coll. A, Adams ”]. 
Long. 32, diam. 13 mil. 
2. Fenella rissoiformis. 
Chryssalida rissoiformis, Zssel, Malaec. Mar Rosso, 1869, Suez; long. 2%, 
diam. 1 mil, 
2 Massaua; coll, Prof. A. Issel. 
2 Andamans; coll. G. Nevill, Esq. 
1 Roweiah, Red Sea; coll. J. B. Baxter, Esq. 
This last is a rather narrower form. 
3. Fenella cerithina. 
Rissoa cerithina, Philippi, Zeits. Mal., 1849, p. 34, Aden—long. 13 ;? var. 
=F. seabra, A. Ad. 
50 Mauritius; coll. G. Nevill, Esq. [34, 1]. 
5 Suez; coll. Prof, A. Issel and J. B. Baxter, Esq. 
8 Aden; coll. Dr. F. Stoliczka and G. Nevill, Esq. 
2 Natal; coll. G, Nevill, Esq. 
Herr Schwartz identified these Natal specimens as F. excur- 
vata [ubiP]; Gould speaks of an Alvania excurvata, Cpr. 
10 Oman and Tawila [Persian Gulf]; coll. W. T. Blanford, Esq, 
var, [ P dist. sp.]. 
26 Singapore; coll. Dr. F. Stoliczka. 
var. scabra, 
Dunkeria scabra, 4. Adams, Ann. Mag. VI, 1860, p. 421, Tsu-sima, Anfr. 
81, [* liris elevatis tribus” | ; Suez, fide McAndrew. 
2 Japan; ex Mr. Damon [‘‘coll. A. Adams ”’]. 
Long. ai diam, 1 mil., the other rather larger, 
