BIVALVE SHELLS. 85 



ad umbones compressa, transversim tenuistriata, striis in 

 latere postico evanesceatibus ; albo-grisea fusco in medio 

 maculata, ad margines sa^pius lineolata; maculis in medio 

 sajpius duabus personatis ; lunida areaque minimis, angustis, 

 lanceolatis, atro-castaneis ; valvis intus in fornice violaceis, in 

 margine albis ; impressione musculari antica ovato-oblonga ; 

 fossula laterali valvse dextrje usque ad dentem cardinalem 

 prolongata; impressione pallii ad marginem descendeute. 



Circe personata. Desk. Proc. Zool. Soc. 1853. 



Hab. Oceanus Indicus; Insulse Philippinenses. 



6. Circe lenticularis. 



C. testa ovato-subtrigona, in medio turgida, ad peripheriam acuta, 

 ina3quilaterali, antice posticeque obtusa, transversim sulcato- 

 plicata, alba, lineolis castaneis angulatis vel undulatis inter- 

 ruptis ornata; sulcis in latere postico evanidis; umbonibus 

 depressis, plicis obsoletis divaricatis notatis ; lunula angusta, 

 atro-fusca, lanceolata; vulva profunde excavata, atrata, lineis 

 atris irradiantibus ornata ; valvis intus pallide croceis ; impres- 

 sione pallii brevissima, in medio valvarum posita. 



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



Hab. ? Coll. Cuming. 



7. Circe corrugata. B.M. 



C. testa subcomplanata, postice subangulata, polita, pro])e um- 

 bones rugulosa, grisescente fulva, minute lineis rubris omnino 

 scripta, postice subquadrata ; marginibus dorsalibus declivibus 

 rubris ; costis elevatis, distinctis, postice subangulatis. 



Venus corrugata, Cliemn. Conch, vii. 25. pi. 39. f. 410, 411. 



Dillw. (ex parte). Cat. i. 201 (pro figura Chemnitzii). 

 Venus scripta, var. /3. (ex parte), Gmel. p. 3286 (pro figura 



Chemnitzii). 

 Cytherea rugifera, Lamk. An. s. Vert. v. 579. no. 70. 



Hanley, Descr. Cat. p. 108. 

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

 Circe rugifera. Sow. Thes. Conch, p. 652. pi. 139. f. 44, 45. 

 Savigny, Descr. d'Eyypte, pi. 9. f. 2. 



Hab. Mare Rubrum et Madagascariense. 



8. Circe crocea. B.M. 



C. testa obliqua, forma variante, marginibus rotundatis, albida, 

 epidermide lutea induta, nonnunquam fusco prope umbones 

 biradiatim picta, intus lutea, antice concentrice sulcata, postice 



