C R U C I B U L U M. 



Species 16. (Fig. a, h, Mus. Cuiiiiug.) 



Crucibulum striatum. Cruc. testa orbiculari, pikiformi, 

 vertice conoideo rostrato ; sordide fuscescente, radiatim 

 striata, str'm suhamplis, distantibus, concentrice obso- 

 lete fimhriatls; appeiidice interna late patuld, ad latns 

 affixd. 



The striated Crl'cibulum. Shell orbicular, cap- 

 shaped, top conoid, beaked; dirly light-brown, radi- 

 ately striated ; strim rather large, distant, concentri- 

 cally obsoletely frilled ; internal appendage bi-oadly 

 open, affixed to the side. 



Cnlyptraa striata. Say, Journ. Acad. Nat. Sci. Phil. vol. v. 

 p. 216. 



Hab. ? 



A conoid cap-shaped shell in which tLe radiating striae 



are rather large and distant, arranged almost in concentric 



Trills. 



Species 17. (Fig. a, b, Mus. Cuming.) 



Crucibulum auritum. Cruc. testa orbiculari, depres- 

 siiiscula, eonvexd, vertice obtmo, radiatim dense striata, 

 striis corruf/atis, irregularibns ; sordide fuscescente ; 

 appendice interna ampld, auriform/, patuld, submar- 

 ginali, ad latiis affixd. 



The eared Crucibulum. Shell orbicular, rather de- 

 pressed, convex, top obtuse, radiately densely striated , 

 strife wrinkled, irrcgidar ; dirty light-browu ; internal 

 appendix large, ear-shnped, open, almost marginal, 

 affixed to the side. 



Cuhjptraa striata, Broderip (not of Say), Pro. Zool. Soc. 

 1834, p. 38. 



Hab. Valparaiso (on shells dredged from sandy mud at a 



depth of from forty-five to sixty fathoms) ; Cuming. 



This species is less conoid than C. striata, Say, and 



diflerently striated. The internal appendage reaches 



nearly to the margin. 



Species 18. (Tig. a, b, Mus. Cuming.) 

 Crucibulum radiatim. Cruc, testa conico-orbiculari. 



alba, fusco-rufescenfe radiotd, vertice aculo, castaneo 

 tincto, punctata, radiatim striata et creberrime teuui- 

 liratd ; appendice internd cyathiformi, productd, late- 

 raliter concavo-compressd. 

 The rayed Crucibulum. Shell conically orbicular, 

 white, rayed with fuscous-red, top sharp, stained and 

 dotted with chestnut, radiately striated and very 

 closely finely ridged ; internal appendix cup-shaped, 

 produced, concavely compressed on one side. 

 Calr/ptrtBa radiata, Broderip, Pro. Zool. Soc. 1834. p. 36. 

 Uab. Bay of Caraccas. 



The internal cup-shaped appendage of this species is 

 quite peculiar. " It is pressed in, as it were," as de- 

 scribed by Mr. Broderip, " on one side, and adheres to 

 the shell not only by its apex, but also by a lateral seam, 

 which scarcely reaches to the rim of the cup." 



Species 19. (Fig. a, b, Mus. Cuming.) 



Crucibulum vebrucosum. Cruc. testa orbiculari, medio 

 conird, vertice centrali, subuiamillari, lutescente-lacted, 

 subopacd, la-vigatd, versus maryitiem pecuUariter cor- 

 rugato-verrucosd ; appendice internd anguste cyathi- 

 forvii, compressd, ad latus affixd. 



The tvarty Crucibulum. Shell orbicular, conical in 

 the middle, top central, somewhat mamillary, yel- 

 lowish cream colour, rather opake, smooth, pecu- 

 liarly wrinkle-warty towards the margin ; internal ap- 

 pendage narrowly cup-shaped, compressed, affixed to 

 the side. 



IM. ? 



Distinguished by a peculiar wart-like sculpture of very 



irregular but conspicuous development. 



Fig. 20. (Fig. a, b, Mus. Cuming.) 

 This shell is presented as an illustratiou of the elevated 

 conical form of C. extinctorium, described in the preceding 

 Plate, as figured by De Blaiiiville in his ' Manuel de Mala- 

 cologie,' pi. 48. f. 8. 



February, 1859. 



