CAHDIUM.— Plate XIX. 



fleshy brown, white towards the margins, prettily or- 

 namented with square rose spots, umbones purple, 

 interior concentrically variegated with rose. 

 Cardium australe, var., Sowerby. 



Reeve, Pro. Zool. Soc, 1845. 



Had. China. 

 This interesting species is not only distinct from the 



preceding in form, but in sculpture and colouring. 



Species 99. (Mus. Hanley.) 

 CARDIUM NEBULOSUM. Card, testa ovatd, subPectiniformi, 

 radiatim costata, costis duaius tribusve et quadraginta, 



rwiceris, la -riliiia, pustice subti/issimi- emiulntis ; albitld, 



maculisfuscescentibus nebulosd, costis Kneis rubris trans- 

 verm hie illic irregulariter pictis; intus alba, infra 

 umbones roseo tinctd, maculisque purpureo-violaceis 



prope man/inn rividi ornatd. 



The clouded Cockle. Shell ovate, somewhat Pecten- 

 shaped, radiately ribbed, ribs two or three and forty 

 in number, convex, smooth, posteriorly very finely 

 crenulated ; whitish, clouded with pale brown spots, 

 ribs irregularly painted here and there with red trans- 

 verse lines ; interior white, stained with pink beneath 

 the umbones, ornamented near the margins with 

 blotches of bright purple violet. 



Reeve, Pro. Zool. Soc, 1845. 



Hab. ? 



The external painting of this shell is very similar to that 

 of the Pectunculus pectinatus. 



Species 100. (Mus. Cuming.) 

 Cardium subretusum. Card, testa oblongo-cordatd, valde 



tiiuddd. pustice I'liiinim-dfjiri'sm ; radii///,,/ planicostatd, 



costis medianis nodulosis, costarum omnium interstitiis 

 creberrime puncturatis ; lunula subexcavatd, callosi- 

 tatefere obsoletd intrudd; intus extusque alba. 



The somewhat blunt Cockle. Shell oblong-cordate, 

 very much swollen, posteriorly concavely depressed ; 

 radiately flatly ribbed, middle ribs nodulous, inter- 

 stices between all the ribs very closely punctured ; 

 lunule slightly excavated, with a somewhat obsolete 

 callosity intruding; white within and without. 



Sowerby, Pro. Zool. Soc., 1840 ; Conch. LUus. f. 24. 



Hub. ? 



Chiefly distinguished from the Cardium retusum by the 

 middle ribs being noduled, and the interstices between the 

 whole being merely finely punctured. 



Species 101. (Mus. Cuming.) 



Cardium Mortoni. Card, testa suboblique ovatd, tenui- 

 culd, lavigafu, albidd, /wim* erosd, epalermide iuteu- 

 fiiscescente margines versus indutd ; intus lutescente. 



Morton's Cockle. Shell somewhat obliquely ovate, rather 

 thin, smooth, whitish, very slightly eroded, covered 

 towards the margins with a yellowish-brown epider- 

 mis ; interior yellowish. 



Conrad, Journ. Acad. Nat. Sci. PhD., vol. vi. pi. 11. f. 5-7. 



Hab. United States. 



A thin opake white shell, slightly eroded towards the 



umbones, and covered with a yellowish-brown epidermis 



towards the margins. 



Species 102. (Mus. Saul.) 



Cardium pulicarium. Card, testa suborbiculari, Pecti- 

 tdformi, radiatim costata, costis quaternis et triginta, 

 anticis muricatis, medianis ntrinque crenulatis, posticu 

 crenatis; luteo- vel incarnato-albd, maculis parvis nigro- 

 fuscis spars'/ hi tincta, intus rosaceo-albd, marginibus car- 

 dinem versus roseo-purpureis. 



The flea-spotted Cockle. Shell somewhat orbicular, 

 Pecten-shaped, radiately ribbed, ribs four and thirty 

 in number, the anterior prickly, the middle crenulated 

 on both sides, and the posterior crenated ; yellowish 

 or fleshy white, stained with scattered blackish brown 

 spots, interior pinkish white, margins rose-purple to- 

 wards the hinge. 



Reeve, Pro. Zool. Soc, 1845. 



Hab. ? 



A characteristic little shell, which I cannot refer to any 



described species. 



Species 103. (Mus. Cuming.) 



Cardium retusum. Card, testa gibboso-cordatd, subob- 

 liqud, post ice concavo-depressd ; radiatim costata, costis 

 convexis, hnibus, interstitiis forfiter clathratis, lunula 

 profundi excavald, callositate cimspicud intrudd ,- intus 

 extusque alba. 



The blunt Cockle. Shell gibbously cordate, somewhat 

 oblique, posteriorly concavely depressed ; radiately 

 ribbed, ribs convex, smooth, interstices strongly lat- 

 ticed, lunule deeply excavated, with a conspicuous 

 callosity intruding ; white within and without. 



Linn^us, Syst. Nat. (Gmelin's edit.), p. 3245. 



Hab. China, &c. 



This well-known species is called by French conchologists 



" The Diana's Heart Cockle." 



