CYPRICARDIA. 



Plate II. 



Species 7. (Mus. Cuming.) 



pricardia vellicata. Cypr. testd oblongo-ovatu, 

 compressd, prope marginem venlralem anticam pecu- 

 liariter vellicatd ; alba, latere postico purpureo-fusco 

 plus minusve vivid'e radiato ; umbonibus purpureo- 

 fuscis. 

 :e pinched Cypricardia. Shell oblong-ovate, com- 

 pressed, peculiarly pinched near the anterior ventral 

 margin ; white, posterior side more or less rayed 

 with purplish brown ; umbones purplish brown. 

 :eve, Pro. Zool. Soc, 1S43. 

 lb. Calbyog, Island of Samar, Philippines (found on 



soft slaty stones at low water) ; Cuming. 

 This interesting species, which has been found in great 

 undance by Mr. Cuming at the above locality, is di- 

 nguished not only by the purple-brown streaks which 

 2 more or less strongly depicted on the posterior side 

 the shell, but by the peculiar manner in which it is 

 nched, as it were, near the anterior ventral margin. 



Species 8. (Mus. Cuming.) 



vpricardia incarnata. Cypr. testa oblongo-ovatd, 

 tenui, plano-convexd, llris plants subtilissimis nume- 

 rosis ab umbonibus undulatim d'wergenlibus, eximi'e 

 notatd ; albidd, postice incarnatd. 



he flesh-tinted Cypricardia. Shell oblong-ovate, 

 thin, flatly convex, delicately marked with a num- 

 ber of very fine flat undulating ridges diverging 

 from the umbones; whitish, flesh-tinted on the 

 posterior side. 



.eeve, Pro. Zool. Soc, 1843. 



Jab. Island of Burias, Philippines (found under a stone 

 at low water) ; Cuming. 

 The surpassing delicacy of the ridges is exceedingly 



haracteristic in this species ; instead of looking raised 



pon the surface, they have all the appearance of undu- 



iting rays of light. 



Species 9. (Mus. Cuming.) 

 Cypricardia laminata. Cypr. testd trapczio-oblongd, 

 tenui, alba, latere postico valde latiore, rotundato, 

 compresso, laminis duabus vel tribus, elevatis, subdi- 

 stantibus, Jimbriato. 



The laminated Cypricardia. Shell trapeziformly 

 oblong, thin, white, posterior side much the wider, 

 rounded, compressed, and frilled with two or three 

 rather distant raised laminae. 



Reeve, Pro. Zool. Soc, 1843. 



Hab. Lord Hood's Island, Pacific Ocean (found at the 

 depth of fivefathoms piercing, and partially imbedded 

 in, the Avicula margari/ifera) ; Cuming. 



This peculiarly shaped shell exhibits the same kind of 

 delicate marginal frill of laminse as the well-known Cy- 

 pricardia coralliophaga (Fig. 12), and belongs as abovi 

 stated to a mollusk of the same terebrating habits. The 

 shells of terebrating mollusks vary so exceedingly in 

 form, according to circumstances of situation, &c, thai 

 were the C. laminata not entirely destitute of the fine 

 radiating stria? which characterise the C. coralliophaga. 

 it might be regarded as a modification of that species. 



Species 10. (Mus. Cuming.) 



Cypricardia obesa. Cypr. testd subqwdrato-ovatd 



valde gibbosd, tumidci, latere postico suboblique an- 

 gulato; longitudinaliter striata, striis profundi inn- 

 sis ; lutescente-albd. 

 The stout Cypricardia. Shell somewhat squarely 

 oval, very gibbous, swollen, posterior side rather 

 obliquely angulated, longitudinally striated, stria 

 deeply engraved ; yellowish white. 

 Reeve, Pro. Zool. Soc, 1843. 



Hab. ? 



This remarkable shell may be easily recognised by its 

 stout swollen formation ; it differs materially in this re- 

 spect from its nearest allied species the ('. Guinaica. as 

 well as in the absence of any nodulous divergent stria. 

 The ridges between the longitudinal striae in these s] 

 are singularly opposite : in the Cypricardia obesa they art 

 sharp and parallel to each other ; in the Cypricardia Gui- 

 naica they are rounded and irregularly waved. Differ- 

 ences in regard to colour are also conspicuous, for the 

 shell under consideration exhibits no indication of pink 

 in the interior, but a kind of a burnt reddish-yellow tinge 

 around the posterior muscular cicatrix. 



Species 11. (Mus. Cuming.) 

 Cypricardia Solenoides. Cypr. testd angustald, Sole- 

 niformi, latere postico plano-angulato ,• albd, postici 



September 1843. 



