Zooloyical Sociefi/. 477 



cancellatls ; albidd, cost arum interstltiis paUiiVt rosaceis, lined vividi 

 coccined ulrinque pictis ; inlus purpureo-ri/fcscente. 



Conch. Icon., Curdlum, pi. 8. f. 40. 



Var. ft. Testd exhts omnino nived. 



Hub. Island of Corrigidor, Philippines (found in coarse sand at the 

 depth of about seven fathoms) ; Cuming. 



The exquisite delicacy and beauty of this shell is remarkable ; each 

 rib is surmounted with a close-set row of slender scale-like spines, 

 and the interstices are minutely cancellated ; they are moreover 

 tinged witli pink, and down each side of the ribs is a bright scarlet 

 line. 



There is another very beautiful small specimen of the Cardium 

 hystrix in the collection of Miss Saul ; and Mr. Cuming is also in 

 possession of two of the ;v\'hite variety. 



Cardium rubicundum. Card, testd oblongo-ovatu, vix obliqud, 

 radiatim costatd, costis acute, convexis, septem et triginta, quarum 

 anticd squamoso-crenatd,mediand utrinque obtiiso-sqitamutd.posticd 

 tuberculutd ; rubicundd, umbones versus alblcante rubido-fusco ma- 

 culatd ; marginibus intus vividv rubris. 



Conch. Icon., Cardium, pi. 9. f. 44. 



Hab. Zanzibar, cast coast of Africa. 



An extremely pretty species, remarkable for its vivid colouring 

 and for the elaborate character of its sculpture. 



Cardium assimile. Card, testd oblongo-ovatu, oblique radiatim 

 costatd, costis quinque et triginta, basi latis, approximatis, sutnmi- 

 tatem versus attenuatis, anticis crenatis, postremis tuberculatis, 

 medianis hevibus, lateraliter subtilissiml impresso-serratis ; pallid e 

 purpureo-rufescente, vmbones versus albicante, maculis sparsis 

 variegatd. 

 ^j Conch. Icon., Cardium, pi. 9. f. 4.5. 

 Hab. Zanzibar, east coast of Africa. 



This species approximates very closely to the Cardium subelonga- 

 tum, yet there are differences which cannot be overlooked ; it has a 

 greater number of ribs and the ribs are of another structure. 



MiTRA. 



MiTRA NoRRisii. Mitr. testd elongato-ovatd, crassd, solidd, spird 

 subobtuso-acuminatd ; striis transversis et longitudinalibus .elevatis , 

 confertis, nndique subtilissiml' reticulatd aut clathratd, transversis 

 prominentioribus ; eburned, epidermide corned, tenui, nigerrimd ; 

 columelld sexplicatd. 

 Conch. Icon., Mitra, pi. 1. f. 6. 



Hab. ? 



I have much pleasure in dedicating this fine species, so entirely- 

 distinct from any hitherto described, to Thomas Norris, Esq., a 

 "Worthy and esteemed patron of the natural sciences, whose magnifi- 

 cent collection of Mitres has so greatly contributed to the complete- 

 ness of my monograph in the work above referred to. It is impos- 

 sible to convey an adequate idea of the finely reticulated sculpture 



