08 BIVALVE SHELLS. 



Cvtherea maculata, Sow. Conch. Man. f, \\7 d) Tkes. Conch. 

 ■p. 629. pl. 131. f. 93, 94, 97. 



Conrad, Shells of Tampa Boy, Sill. Journ. ser. 2. ii. 394. 

 Cliione maculata, Gray, Cat. Cyth. Anal. viii. 306. 



Hab. Mare Autillarum ; Brasilia ; littus Floridarum ; Oceanus 

 Pacificus {Cuming); Guinea [Regenfuss) ; littus Senegalense 

 {Adanson); insulae Sandwichienses. 



6. DlONE SQUALIDA. B.M. 



D. testa ovato-subcordata, crassiuscula, l«evi, pallide fusca, nou- 

 nunquam maculis irregularibus satm-atioribus ; epidermide 

 fusca ; latere postico longiore, prope partem ventralem sub- 

 acuminato. 



Cytherea squalida, Sow. Proc. Zool. Soc. 1835, p. 23. 



Hanley, Descr. Cat. p. 104 ; in Wood, Sup. pl. 13. f. 40. 

 Sow. Thes. Conch. p. 629. pl. 131. f. 87, 88, 89. 



Chione squalida, Gray, Cat. Cyth. Anal.Vm. 306, 1838. 



Cytherea biradiata, Soiv. Beechey's Voy. pl. 



Venus squalida, D'Orb. Voy. en Amer. Moll. p. 565. 



Testa junior : Cytherea elegans, Koch in Phil. Abbild. Conch. i. 

 150. pl. 1. f. 4. 

 Hab. Sancta Helena ; California; insulse Philippinse. 



7. DlONE RUTILA. 



D. testa ovato-transversa, inaequilaterali, tumida, crassa, utroque 

 latere obtusa, laevigata, nitida, palhde ilavido-luteola, maculis 

 latis, transversis, insequalibus rufo-castaneis picta ; albo longi- 

 tudinahter pauciradiata, radiis angustis ; luuula vix perspicua, 

 elongata, linea impressa circumscripta ; latere postico maculis 

 irregularibus satm-atioribus ornato ; valvis intus candidissimis, 

 dente iunari cardine approximato. 



Cytherea rutila, Sow.jun. Thes. Conch. p. 743. pl. 163. f. 205. 

 Dione rutila, Desh. Proc. Zool. Soc. 1852. 



Hab. ? Coll. Cuming. 



8. DioNE Hagenov^i. B.M. 



D. testa ovata, oblique subcordata, Isevi, nitida, concentrice ob- 

 solete plicata, fusca, subradiata, radiis 2-3 latioribus interrup- 

 tis rufo-castaneis ornata ; umbonibus tumidis, concentrice ele- 

 ganterque sulcatis ; lunula excavata, cordato-lanceolata ; area 

 utrinque castaneo-maculata, 



Cytherea Hagenowi, Dunker, Zeits. fur Malak. 1848, p. 184. 

 no. 17. 



