90 BIVALVE SHELLS. 



20. ClRCE TRANSVERSARIA. 



C. testa ovato-transversa, subsequilaterali, depressa, antice rotun- 

 data, postice subtruncata, fusca, ssepius ad umbones albo an- 

 gulatim maculata ; antice posticeque divaricatim rugosa, in 

 medio transversim sulcata, sulcis rugisque granosis; umbonibus 

 minimis brevibus oppositis ; lunula elongato-lanceolata, linea 

 impressa circumscripta atrata ; vulva subplana, laevigata ; 

 intus alba, in medio violaceo maculata. 



Circe transversaria, Desh. Proc. Zool. Soc. 1853. 

 Var. /3. Testa minore, sulcis transversis majoribus. 



Hab. Insulae Philippinenses. CoU. Cuming. 



21. ClRCE PECTINATA. B.M. 



C. testa oblonga, plerumque subcompressa, postice subquadrata; 

 costis nodulosis numerosis, postice divaricatis, tum gradatim 

 radiantibus, antice divaricatis ; margine dorsali excavato : 

 vqjiat costis magnis. 



Pectunculus, Lister, Conch. pl. 312. f. 148. 



Rumph. Amb. pl. 43. f. D- 



Petiver, Amb. pl. 18. f. 14. 



Favanne, pl. 46. f. E 1. 



Coucha crassa, Gualt. Ind. pl. 72. f. E, F, & pl. 7^- f- A. 



Venus pectinata, Linn. Syst. Nat. ed. 10. p. 689; ed. 12. p. 1 135. 



Linn. Mus. Ulr. ii. 507. no. 72. 



Born, Test. Mus. p. 74. 

 Venus pectinata (ex parte), Chemn. Conch. vii. 28. pl. 39. f. 418, 



419? 

 Venus, Encycl. Meth. pl. 271. f. 1 a, h. 



Venus discors (ex parte), DiZZw. (non Gmel.) Cat. p. 199. no. 93. 

 Cytherea pectinata, Lamk. An. s. Vert. v. 577- no. ^'^. 



Desh. Encycl. Meth. Vers, ii. 59 ; in Lamk. An. s. Vert. 

 ed. 2. vi. 322. no. 63. 



Hanley, Descr. Cat. p. 107. 

 Venus pectinee, Blainv. Malac. pl. 74. f. 4. 

 Circe pectinata, Gray, Cat. Cyth. Anal. viii. 307. 



Sow. Thes. Conch. p. 649. pl. 137. f. 1-3. 

 Cytherea Savignyi, Jonas, Zeits.fur Malac. 1846, p. 65. 



Krauss, Sudafr. Moll. p. 9. 

 Savigny, Descr. de FEgypte, Coq. pl. 8. f. 17- 



Hab. Mare Rubrum ; oceanus Indicus ; insulse PhiUppinenses. 



22. ClRCE GlBBIA. B.M. 



C. testa subovah, postice oblique quadrata ; area distincta, sub- 



