CARDIUM. 



Plate XX. 



Species 104. (Mus. Cuining.) 



Cardium Elenense. Card, testa teuui, ovata, umbones 

 versus subattenuatd ; transversim et longitudinaliter 

 striata, striis trausrersis subti/issimis confertis, loiigi- 

 tudinalibus latiusculis subdistantibus ; pallide fuhd, 

 punctis minutis rubido-fuseis trigono-maeulatd, area 

 postremd immaculatd; umbonibus licido-purpurasceii- 

 tibus, bitus fusco-rubente fasciatd. 



The Elena Cockle. Shell thin, orate, somewhat atten- 

 uated towards the umbones ; transversely and longi- 

 tudinally striated, transverse striae very fine and close- 

 set, longitudinal striae rather broad and comparatively 

 distant ; pale fulvous, painted with triangular spots 

 of reddish brown dots, posterior area unspotted ; um- 

 bones livid purple, interior banded with brownish red. 



Sowerby, Pro. Zool. Soc, 1S40 ; Conch. Illus. f. 58. 



St. Elena. AYest Columbia (found in sandy mud at 

 the depth of seven fathoms) ; Cuming. 

 The minute dotted painting of this shell is one of its 



characteristic features. 



Fig. 105. — As the shell here represented proves to be 

 merely an obscure specimen of the C'ardium papil • < 1 

 take the opportunity of inserting a rare and very distinct 

 species omitted in the illustration. 



Species 105. (Mus. Linn. Soc.) 

 Cakdivm rigidum. Card, testa oblique oratd, radiatim 

 •data, costis tuberculin compressis creberrime 

 armatis ; alba, fuscescente pallide tinctd. 

 The hough Cockle. Shell obliquely ovate, radiately 

 strongly ribbed, ribs armed with very close-set com- 

 pressed tubercles ; white, faintly tinged with brown. 

 Wood, General Conehology, p. 236. pi. 57. f. 2, 3. 



/. ? 



There are three odd valves of this remarkable species, 

 in the Museum of the Linna?an Society, from the collection 

 of Sir Joseph Banks, and I have not seen any other shell 

 at all approaching to it. The ribs are surmounted with 

 very close tubercles, worn away towards the umbones. 



Species 106. (Mus. Saul.) 



Cardium ferrugixosum. Card ! \ri,pos- 



tice depressiwculd, radial 



rigiutt <, ' ■• subtUissime 



■ 

 albidd, maculisferrugineis hk illic aspersd. 



The rust-spotted Cockle, Shell somewhat orbicular, 

 rather depressed posteriorly; radiately ribbed, ribs 

 three and twenty in number, of which the six extreme 

 posterior are flattened, and very finely muricated along 

 the edge, the middle smooth, and the anterior cre- 

 nated ; yellowish white, sprinkled here and there with 

 rusty spots. 



Reeve, Pro. Zool. Soc, 1845. 



Hob. ? 



The ribs are rather strongly grooved out in the interior 

 of the shell, and on the posterior side they are a little di- 

 vided at the extremity, as in the Cardinal ringens. 



■.- 107. (Mus. Cuming.) 

 Cardium exaspebatum. Card, testa subquadrato-globosd, 

 liratd, liris ad centenis minutissimis creber- 

 riinis, tertid qudque erecto-squamatd, quasi spinosd. 

 inute brevisqmmatis ; nived, 

 roseo-aurantiis ; lunula viride aurantid, intus 

 alba, marginibus minzttissime terraMs. 

 The sharp Cockle. Shell somewhat squarely globose, 

 radiately ridged, ridges about a hundred in number, 

 very minute, very closely arranged, every third ridge, 

 surmounted by a row of erect spine-Uke scales, the 

 two intervening ridges by a row of minute short 

 scales ; snowy white, sides tinged with pinkish orange, 

 lunule bright orange, interior white, margins very 

 minutely serrated. 

 Sowerby, Pro. Zool. Soc, 1S40; Conch. Illus. f. 37. 

 Hab. Swan River ; Lieut. Collie. 



An interesting and beautiful species, exhibiting that re- 

 markable novelty of design which is so characteristic of 

 the Australian Fauna. 



Species 108. (Mus. Cuming.) 

 Cardium fragile. Card, testa suboblique ovatd, de- 

 tenui, papyraeed ; radiatim costatd, costis sep- 



tuberculatis ; alba. 



The fragile Co< ki.e. Shell somewhat obliquely ovate. 



depressed, thin, papyraceous ; radiately ribbed, ribs 



seven and twenty in number, smooth, or obsoleteh 



tuberculated ; white. 



Reeve, Pro. Zool. Soc, 1S45. 



Hab. ? 



A very delicate fragile pa] 



