Pe Se ee, ee ee va rr 347 
OTe 
EO CE Oe TS cal (alii 
.L. radians. Orbieular, convex, with minutely waved or rugose con- 
centric strie, and radiating stri# obsolete on the middle of the valves, 
and most distinct on the anterior side; posterior submargin destitute of 
radiating lines; beaks central, prominent; margin crenulated. This 
species is recent at Mobile Point, Ala., and occurs near Newiiet, N.C. 
Mytinvs. sae 
* Mytilus incrassatus: Thick, much inflated; anterior angele 
incurved near the middle; basal. margin not obtusely rounded ; hinge 
thick, with slightly prominent robust teeth. Length, about 3 inches. 
Carprum. 3 
Cardium sublineatum. Plate Il, fe. 13. Obliquely obovate, thin, 
slightly ventricose, with obsolete radiating lines, most distinct near the 
ends ; submargins of anterior and posterior sides destitute of radiating 
lines wm, iinet. see 28 —— 
Gaathodon- miner. Paci te Tiana late Peto 
ted and x e Zt wales the: fourth 
I ine apr gh entities SNe 
eee ee i. aa Nitta #3 apace ee hs Sua Sl see ae ed 
Amphidesna Cohatricta Saaeae song a ven 
basal margin opposite the apex slightly ¢ 
ed; beaks nearest the pr 
a. : 
tes PRR 
teeth prothinent, lat eral teeth none. © eae hegre: 
“. : ap eter te ee 
ce oo CaRpITa. 
“Cardin porplena ‘Pato Th, fig {e. Tegml, nse at it 
iia a eee. SL aS 
Roa ae ig Plate Il, fig. 17. ‘Trigonal, elevated, convexsde~ 
pressed, ribs about eleven, convex, minutely granulated ; posterior ex- 
Tamaanauhs Linge cochehanagnars Saspmsreas: Ph aad 
