C6 BIVALVE SHELLS. 



stincta, colorum experte ; natibus valde obliquis, candidis, 

 ligameuto angusto ; extremitate postica obtusa, supei-ficie in- 

 terue alba aut albido-rosea ; margine integro. 



Cytherea obliquata, Wood, Ind. Test. Siip. pl. 15. f. 24. 



Hanley, Proc. Zool. Soc. 1844, p. 10/ ; Sp. of Shells, Ap- 



pend. 

 Sow. Thes. Conch. p. 636. pl. 132. f. 125, 126. 



Hab. Insulae Philippinae. 



31. DlONE CORDIFORMIS. 



D. testa cordato-globosa, crassa, obsolete concentrice striata, 

 striis ad basin sublamellosis, albida, subflava, punctulis non- 

 nulUs badiis concentrice irregulariterque adspersa; umbonibus 

 tumidis incurvis, antrorsum inclinatis ; area magna vix termi- 

 nata ; labiis tumescentibus ; ligamento profunde immerso. 



Cytherea cordiformis, DunJcer, Zeits. fur Malak. 1848, p. 185. 

 no. 15. 



Hab. ? 



32. DlONE VARIANS. B.M. 



D. testa ovato-cordata, inaequilaterali, subventricosa, tenuiuscula, 

 alba, maculis et lineis angulatim flexuosis castaneis variegata, 

 coucentrice (et antice prEesertim) sulcato-striata; lunulamagna, 

 cordata, linea impressa circumscripta, alba, macula castanea 

 aut livido-purpurascente basi ornata ; pube castaneo-venulata ; 

 superficie interna omnino albida; margine integro; cardine 

 ut in Cytherea Iseta. 



Cvtherea varians, Wood, Ind. Test. Suppl. pl. 15. f. 33. 



Hanley, Proc. Zool. Soc. 1844, p. 109 ; Spec. of Shells, 8. 

 Cvtherea rubiffinosa, Phil. Abbild. pl. 3. f. 2. 



Sow. The^s. Conch. p. 639. pl. 133. f. 138, 139. 



Hab. ? ? Mai"e Brasiliense ; ? mare Antillarum. 



33. DlONE SUBPELLUCIDA. B.M. 



D. testa subovali, ventricosa, tenui, lae^^, purpurascente-grisea, 

 maculis fuscis seriatim radiata, latere antico brevi, lunula indi- 

 stincta ; latere postico subelongato, subquadrata, margine dor- 

 saU declivi ; umbonibus prominuUs. 



Cytherea subpeUucida, Sow. Thes. Conch. p. 639. pl. 133. f. 136. 



Hab. Insula Lucon PhiUppinarum. 



34. DlONE CROCEA. 



D. testa ovato-trigona, turgida, cordiformi, inaequilaterali, laevigata. 



