CARD IT A. 



Plate VIII. 



Species 37. (Fig. a, b and c, Mus. Belcher.) 

 .rdita abyssicola. Card, tcstd globoso-cordiformi, 

 valde gibbosd, albd ; radiatim multi-costatd, costis 

 tricenis, angustis, subtilissime imbricatis, imbricibus 

 mmerosis, confertis ; lunula maximd, prominent e no- 

 tat a. 

 BE deep-dwelling Caedita. Shell globosely heart- 

 shaped, very gibbous ; white ; radiately many-rib- 

 bed, ribs thirty in number, narrow and very finely 

 imbricated, imbrications numerous and close-set ; 

 lunule very large, and prominently developed. 

 inds, Pro. Zool. Soc, 1843. 



r«6. Straits of Malacca (found at the depth of a hun- 

 dred fathoms) ; Hinds. 

 I am much indebted to Mr. Hinds for being allowed 

 j introduce this remarkable shell to the notice of con- 

 hologists. It is a very beautifully sculptured species, 

 nd especially curious from having been dredged by that 

 a defatigable collector in the Straits of Malacca at the 

 •reat depth of one hundred fathoms. Another mterest- 

 ng feature in this shell is its close affinity with the fos- 

 il Cardita imbricata. There is no indication of any 

 ;0 lour; it looks exactly as if cut from alabaster, and is in 

 •xcellent condition, with the ligament fresh and entire. 



years since by M. Michelin from a worn odd valve. 

 The Cardita varia is the nearest allied species to it, but 

 that shell is of smaller dimensions, rounder, and slightly 

 noduled ; the painting is also of different character. 



Species 39. (Mus. Stainforth.) 

 Cardita Preissii. Card, testd trapezio-ovatd, depres- 

 siusculd; lutescente, fusco varid et irregulariter zo- 

 natd; radiatim costatu, costis oclodecim ; anttcis 

 rteganter annulato-crenulatis, posticis squamis forni- 

 catis, erectis, sparsim ornatis. 

 Preiss's Cardita. Shell trapeziformly ovate, rather 

 depressed ; yellowish, variegated and irregularly 

 zoned with brown; radiately ribbed, ribs eighteen 

 in number; anterior ones elegantly crenulated, 

 having the appearance of rings, posterior sparingly 

 adorned with erect, hooked scales. 

 Menke, Moll. Nov. Holl., p. 38. 

 Hab. Western coast of New Holland ; Menke. 



This is a very pretty species, and the single specimen 

 here figured is the only one I have seen. I was enabled 

 to identify it by means of a very well executed drawing, 

 kindly forwarded to me a few months since by the au- 

 thor, M. Menke of Pyrmont. 



Species 38. (Mus. Brit.) 

 Cardita flammea. Card, testd depresso-cordatd, eras- 

 sd, radiatim costatu, costis latis, depressis, subobtu- 

 sis rubido-lutescente, maculisrubidis triangular ibus, 

 flammeis, vivid* pictd.epidermide crassd indutd; urn- 

 bonibus incurvis; lunula maximd, profundd; intus 

 albd, margine denticuiato. 

 The flame-marked Cardita. Shell depressly heart- 

 shaped, thick, radiately ribbed, ribs broad, de- 

 pressed and rather obtuse ; reddish yellow, vividly 

 painted with reddish, triangular, flame-hke spots, 

 and covered with a thick epidermis; umbones 

 curved inwards ; lunule very large and deep ; in- 

 terior white, margin denticulated. 

 Venericardia flammea, Michelin, Mag. de Zool., 

 1830. pi. G. 



Hab. ? 



It is with no little gratification that I now publish a 

 good illustrative figure of a species described thirteen 



Species 40. (Mus. Cuming.) 

 Cardita canaliculata. Card, testd suborbiculatd, lu- 

 teold fusco varie zonatd; radiatim costata, costis 

 una vcl duabus et viginti, lateraliter compresses, 

 annulato-serratis, interstitiis excavato-canahculatis ; 

 intus albidd, fusco pallid'e tinctd. 

 The channeled Cakdita. Shell nearly orbicular, 

 yellowish, variously zoned with brown; radiately 

 ribbed, ribs one or two and twenty in number, la- 

 terally compressed, annulately serrated, interstices 

 excavately channeled; interior wh.t.sh, family 

 stained with brown. 

 Reeve, Pro. Zool. Soc, 1843. 

 Hab. Philippine Islands ; Cuming. 



The leading features of this species are its rounded 

 form, and ^peculiar manner in which the interstices 

 between the ribs are channeled out. 



September 1843. 



