831 



11. Gena coNCiNNA (pL clxxiii. f. 20, 21), Gould (Stoma- 

 tella), Exp. Shells. 



G. testa tenui,auriforini, subventricosa,carDea,lineis rubris trans- 

 versis, obliquis (sajpe iuterruptis) oniata ; spira obtusa, brevissiraa ; 

 anfractu ultimo iuHato ; apertura ampla, transversim ovata ; colu- 

 mella acuta, perobliqua. 



A small, rather thin species, prettily painted with oblique, trans- 

 verse red lines, which are often interrupted. 



Sandy Island. (Mus. Cuming.) 



12. Gena pulchella (pi. clxxiii. f. 17, 18, 12), A. Adams, 

 Pro. Zool. Soc. Feb. 1850. 



G. testa convexo-depressa, ovali, alba, rufo maculata, dorso 

 convexa, tota striata; spira prominula, anfractibus rotundatis; 

 apertura magna, ovali, intus margaritacea, iridescente. 



Shell white, spotted with red, convex and striated ; spure pro- 

 minent, with rounded whorls ; aperture iridescent internally. 



Hab. ? (Mus. Metcalfe.) 



13. Gena asperulata (pi. clxxiii. f. 28, 29), A. Adams, Pro. 

 Zool. Soc. Feb. 1850. 



G. testa haliotoidea, dorso convexa; rufo-fusca, cingula alba, lata, 

 longitudinali, ornata ; lineis elevatis, subconfertis, striisque longi- 

 tudinahbus, obliquis, decussata ; spira postica subprominula, alba ; 

 apertura elongata, ovali. 



Convex, rufo-fuscous, with a wide, white zone, and with decus- 

 sated, elevated, close-set strise; spire rather prominent, postical, 

 wliite. 



Eab. ? (Mus. Metcalfe.) 



14. Gena ornata (pi. clxxiii. f. 24, 25), A.' Adams, Pro. 

 Zool. Soc. Peb. 1850. 



G. testa subturbinacea, ovali, Isevi, pohta, dorso convexa, fusco- 

 rubra, lineis nigris, albo-articulatis, longitudinalibus ornata ; spira 

 prominula, rosea ; apertura ovaK ; columella arcuata, simphci ; 

 labro reflexo, postice subflexuoso. 



Smooth, polished, convex, reddish-brown, with longitudinal 

 black lines, articulated with white ; spire rather prominent ; outer 

 lip reflexed posteriorly, subflexuous. 



Island of Ticao, Philippines ; on the reefs. (Mus. Cuming.) 



