2621 
2622 
2623 
2624 
2625 
2626 
2627 
2628 
2629 
2630 
2631 
2632 
2633 
2634 
2635 
2636 
2637 
2638 
2639 
2640 
2641 
94 
GENUS ATEYPA. S O W 6 r h y . 
concentrica, Conrad, Ludlow shale, fossil, 
prisca, Canandaigua, N. Y., fossil. 
GENUS LEPT^NA. D a I m a 71 . 
alternata, Ohio, fossil. 
GENUS THECIDIUM. D ef r a 71 c e . 
347 Mediterranean, Sowb. Gen., f. 6, 7. 
Risso. pr.M. de Nice,t.4,f. 183. 
fossil. 
GENUS CRANIA. 
Retz, Brugtiiere. 
antiqua, 
Def, 
Chenu C. 111., pi. 1, f 6. 
fossil. 
Parisiensis, 
Def, 
Belgium, 
Chenu C. 111., pi. 1, f 9. 
fossil, 
personata, 
Lam., 298 
Mediterranean, 
Chemn. 8, pi. 76, f 687. 
ringens. 
Hoening, 302 
Mediterranean, 
Poli, V. 2, p. 189, pi. 30. 
striata, 
Def, 
Belgium, 
Chenu C. 111., pi. 2, f 1, 
fossil, 
GENUS ORBICULA 
. Lamarck. 
lamellosa. 
Brod., 
Iquiqui, 
Ts. Zool. Soc.,v. l,pl. 28,f 2-5. 
GENUS HIPPONYX 
. D ef r an c e . 
acuta. 
Quoy, 
615 
New Holland, 
Voy. Astrol., pi. 72, f 35, 36. 
australis. 
Lam., 
541 
New Holland, 
Voy. Astrol., pi. 72, f. 25—34. Patella australis, Lam. 
barbata. 
Sowb., 
Society Isles, 
Sowb. Thes., p. 369, pi. 73, f 26. 
cornucopiae. 
Def, 
614 
Grignon, 
Blain. Mai, pi. 50, f. 1. 
mitrula. 
Gmel., 
610 
Lobos Island, 
Zool. Proc., 1835, p. 5. Pileopsis mitrula, Lam. 
“ var.. 
Peru, 
Sowb. Thes., pi. 73, f 18—20. Patella antiquata, Linn 
ti cc 
Blain. Mai, pi. 50, f 4. Patella mitrula, Gmel. 
radiata. 
Gray, 
Gallapagos, 
Zool. Proc., 1835, p. 5. 
curvirostris, 
Mediterranea, Def., 
“ var., 
radiata, Def., 
