62 BIVALVE SHELLS. 



merosis, rubescentibus omata ; intus in fornice alba, postice et 

 ad margines profunde violacea. 



Cytherea florida, LamJc. An. s. Vert. v. 565. 



Desh. Lamk. ed. 2. vi. 305. no. 20. 



Delessert, Rec. de Coq. pl. 8. f. 7- 



Hanley, Descr. Cat. p. 98 ; in Wood, Suppl. pl. 13. f. 22. 



PMlippi, Abbild. Conch. ii. 180. pl. 5. f. 4. 

 Var. /3. Testa paulo latior. 

 Cytherea pulchra, Gray, in Wood, Suppl. pl. 2. f. 16. 



Hanley, Descr. Cat. p. 104. 



Sow.jun. Thes. Conch. p. 624. pl. 130. f. /3. 

 Chione pulchra, Gray, Anal. viii. 305. 

 Cytherea semisulcata, Sow. jun. Thes. Conch. p. 624. pl. 131. 



f. 82. 

 Var. y. Testa non radiata, lineis maculisve violaceis undatis 



variegata. 

 Cytherea Erycinella, Lamk. An. s. Vert. v. no. 17- 



Desh. Lamk. ed. 2. vi. 304. no. 17- 



Sow.jun. Thes. Conch. p. 624. pl. 131. f. 85. 



Savigny, Exped. d'Egypte, pl. 9. f. 1. 



Hab. Mare Rubrum ; Mozambique, Madagascar. (Australia, 

 Lamk.) 



20. DlONE GRATA. 



D. testa transversim ovata, insequilaterali, inflata, suboviformi, 

 flava, longitudinaliter violaceo-fuscescente radiata, transversim 

 regulariter sulcata, sulcis regularibus, approximatis, depressis; 

 umbonibus tumidis, obliquis; lunula magna,cordata, roseo-pur- 

 purascente ; area paululum excavata, lineis rubris distantibus 

 flexuosis ; valvis intus postice vioiaceis. 



Cvtherea pectoralis, Sovj. (non Lamk.) Thes. Conch. p. 625. 

 ■pl. 130. f. 75. 



Hab. Insulae Philippinae (Cuming). 



21. DiONE Erycina. 



D. testa ovali, crassa, concentrice planulatim sulcata, medio fusca, 

 ad margines aurantia, prope marginem dorsalem lusco et albo 

 maculata, omnino fusco et albo interruptim railiata ; latere 

 antico brevi ; lunula distincta, aurantia. 



Pectunculus laevis, Lister, Conch. pl. 268. f. 104. 



Knorr, Vergn. iv. pl. 3. f. 5. 

 Venus Erycina, Linn. Syst. Nat. ed. 10. p. 68G; ed. 12. p, 1131. 

 no. 122. 



