LUCINA.— Plate VI. 



Species 31. (Mas. Cuiuiug.) 



IjUCIna aueantia. Lue. testa siibqmdrato-urbiculari, 

 i.umidd, crassissimd, solidd, postice mlcato-excavatd, 

 ardici Immld ampld Micordatd impressd, concoitrke 

 obscure liratd, liris tenuibus, subrudibus, inegularibiis ; 

 a/M, inargines versus intvs extusque vivide rufescente- 

 aurautid, epidermide vix nulla. 



I'llE ORANOE-TINGED LuciNA. Shell somewliat squarely 

 orbicular, swollen, very thick, solid, posteriorly sul- 

 cately excavated, anteriorly impressed with a large 

 broadly cordate limule, concentrically obscurely 

 ridged, ridges thin, rather rude and irregular; 

 white, bright reddish-orange within and without 

 towards the margins, with scarcely any epidermis. 



Deshayes, Anim. saus. vert. vol. vi. p. 230. 



Hab. West Indies. 



In form this species is very similar to the preceding, 



wanting its cliaracteristic epidermis. 



Species 32. (Mus. Cuming.) 



LuciNA speciosa. Luc. subquadrato-orbictdari, crassd, 

 depressiusculd, postice sulcato-excavatd, antice himdd 

 ampld elongato-cordatd impressd, concentrice liratd, 

 liris tenuibus, membranaceis ; alhd, epidermide corned 

 indutd. 



The handsome Lucina. Shell somewhat squarely 

 orbicular, thick, rather depressed, posteriorly sul- 

 cately excavated, anteriorly impressed with a large 

 elongately cordate lunide, concentrically ridged, 

 ridges thin, membranaceous ; white, covered with 

 a horny epidermis. 



Ilab. lied Sea. 



The epiderm ridges of this beautiful species are not 



turned back towards the umboes as in L. Pennsylvanica, 



but incline forwards. In other respects it bears a very 



close resemblance to that species, which, as coming from 



so remote a locality, is extremely curious. 



