!"^ bivalve shells. 



20. Circe transversaria. 



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

 data, postice suhtruncata, fiisca, sa,^pius ad urabones albo an- 

 gidatim maculata ; antice ])osticeqiie divaricatini rugosa, iii 

 metlio transvcrsiru sulcata, sulcis ru<;isque pranosis; unil)onibus 

 minimis brevibus oppositis ; lunula elongato-lanceolata, linea 

 impressa circumscripta atrata ; vulva subplaua, Ijcvigata ; 

 intus allja, in medio violaceo maculata. 



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

 Var. ^. Testa miuore, sulcis trausversis majoribus. 



Hob. Insulse Philippinenses. Coll. Cuming. 



21. Circe pectinata. B.M. 



C. testa oblonga, plerumque subcompressa, postice subquadrata; 

 costis nodulosis numerosis, ])ostice divaricatis, tum gradatim 

 radiantibus, anticel divaricatis ; margine dorsali excavato : 

 variat costis magnis. 



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



Rumph. Amb. pi. 43. f. D. 



Petiver, Amb. pi. 18. f. 14. 



Favatme, pi. 46". f. E 1. 



Concha crassa, Gualt. Ind. pi. 72. f. E, F, & pi. 75. f. A. 



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



Linn. Mtts. Ulr. ii. 50/. no. 72. 



Born, Test. Mas. p. 74. 

 Venus pectinata (ex pai-te), Chemn. Conch, vii. 28. pi. 39. f. 418, 



419? ^ 



Venus, Encycl. Meth. pi. 271. f. 1 a, b. 



Venus discors (ex parte), Di/iu;. (non Gmel.) Cat. p. 199. no. 93. 

 Cytherea pectinata, Lamk. An. s. Vert. v. 577. no. 63. 



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

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



Hanley, Descr. Cat. p. 10/. 

 Venns pectine'e, Blainv. Malac. pi. 74. f. 4. 

 Circe j)ectinata. Gray, Cat. Cyth. Anal. viii. 307. 



Sow. Thes. Conch, p. 649. pi. 137. f- 1-3. 

 CNthcrea Savignyi, Jonas, Zeits.fdr Malac. 1846, p. 65. 



Kraiiss. Suilafr. Moll. p. 9. 

 Savigny, Descr. de VEgypte, Coq. pi. 8. f. 17. 

 Hab. Mare Rubrum ; oceanus Indicus ; insulae Philippinenses. 



22. Circe Gibbia. B.M. 

 C. testa subovali, postice obliqu^ quadrata ; area distincta, sub- 



