CEErmULA.— Plate I. 



que incurvdet rostrafd, inttis extmque fuhescente-albd, 

 purpurea et rufescenti^-fusco iinctd et lineatd; appen- 

 dice inlernd profunda, plana. 

 The excavated Crepidula. Shell oblong-ovate, ra- 

 ther thick, somewhat twisted, compressed at the side, 

 obliquely incurved and beaked at the apex, fulvous- 

 white within and without, stained and lineated with 

 purple and reddish-brown ; internal appendage deep, 

 flat. 

 Broderip, Trans. Zool. Soc. vol. i. p. 205. pi. 29. f. 7. 

 Hah. Chili; Cuming. 



The lateral compression which gives a somewhat twisted 

 form to this species appears to be natural to it, and not 

 the result of any peculiarity in its place or mode of attach- 

 ment. 



Species 5. (Fig. a, h, Mus. Cuming.) 

 Crepidula squama. Crep. testa suboblique ovatd, plano- 



concavd, complanatd, fulvescente-albd, lineis fusces- 



ceiite-rufis radlaiim str'ujatd; appendice interna eleca- 



tiiiscidd, ad latus subemarginatd. 

 The scale Crepidula. Shell somewhat obliquely ovale, 



flatly concave,smooth,fulvous-white,radiately streaked 



with brownish-red lines ; internal appendage rather 



raised, slightly notched at the side. 

 Broderip, Trans. Zool. Soc. vol. i. p. 305. pi. 29. f 10. 

 Hab. Panama; Cuming. 



A delicate and well-marked species, rayed outwardly 

 with fine fuscous-red lines from the apex to the margin, 

 where they are lost in a covering of yellowish epidermis. 



Species 6. (Mus. Cuming.) 



Crepidula Nautiloides. Crep. tedd oblique ovald, 

 profundi (jibbosd, tenuiculd, albidd, carneo-fusceseenti' 

 tiiictd et strigatd ; appendice interna sidirotundatd, 

 convexd, ad latus emarginatd. 



The Nautiloid Crepidula. Shell obliquely ovate, 

 deeply gibbous, rather thin, whitish, stained and 

 streaked with light flesh-brown ; internal appendage 

 somewhat round, convex, notched at the side. 



Lesson, MS. Mus. Cuming. 



Hab. New York. 



The species which Mr. Cuming has from New York 



with the above name, is of the same type of the genus as 



C. dilatata. 



