A N IM I A 



Plate III. 



Species 12, (Pii^. a, b, c, Mus. Cuming.) 



Anomia Ach^us. Anom. testd late ovatd, Imvigatd, 

 purpurea vel ai(,reo-lutesce7ite, valvd itiferiore conceri- 

 trice siibsquamato-striald, superiors convexd, versus 

 umbonem tumido-uuciuatd. 



The Ach.*:us Anomia. Shell broadly ovate, smootL, 

 purple or golden-yellow, lower valve concentrically 

 somewhat sealy-striated, upper valve convex, tumidly 

 booked towards the umbo. 



Gray, Pro. Zool. Soc, 1849, p. 116. 



Hai. Kurachee, mouth of the Indus ; Major Baker. 

 The swollen hooked growth of this shell is obviously 



a character of the species, and not a distortion arising from 



its place of attachment. 



13. (Mus. Cuming.) 

 Anomia larbas. Anovi. testd suhquadrato-ovatd, tenui, 



argenteo-albd, IcBvigatd, radiatim Jkxuoso-costatd, cos- 

 tis fere obsoletis ; valvd inferiore csrvginoso-carukd. 



The waved Anomia. Shell somewhat squarely ovate, 

 thin, silvery-white, smooth, radiately flexuously ribbed, 

 ribs almost obsolete, lower valve bright verdigris-blue. 



Gray, Pro. Zool. Soc. 1849, p. 117. 



Hab. Payta, Peru ; Cuming. 



A fine faintly-waved shell, of a delicate silvery-white, 



verdipris-blue beneath. 



Fig, 14 a, 6. (Mus, Cuming.) 

 This specimen, conspicuously ribbed in both valves from 

 having grown upon a ribbed shell, is from the collection 

 of the old dealer George Humphreys, and is doubtless 

 another example of .^. Humphreysiana, described at PI. II. 

 Sp. 8. Though differing so much in general appearance, 

 it is of the same oblique form, solid transparent texture, 

 and coppery-purplish colour. 



Species 15. (Mus. Cuming.) 



Anomia adamas. Anom. testd ovatd, versus marginem 

 tammatd, rude costatd, costis atigustis, valde irregtila- 

 ribus, versus marginem conspicue mucronatis ; vivide 

 rufescente-aurantid. 



The adamant Anomia, Shell ovate, laminated towards 

 the margin, rudely ribbed, ribs narrow, very irregu- 

 lar, conspicuously pointed towards the margin ; bright 

 reddish-orange. 



Gray, Pro, Zool. Soc, 1849, p. 115, 



Hab. Lord Hood's Island, Galapagos (attached to Avicula. 



margaritifera at the depth of nine fathoms) ; Cuming. 



The upper valve of this species is distinguished by a 



very bright reddish-orange colour, as well as by a peculiar 



kind of irregular sharp ribbing, developed on appressed 



