Xll 



I NJ)EX. 



O'strea, Lat. an oyster 51 



O'tion, Gr. a little ear 8 



O'vula, from ovum, an egg 94 



'Paiudina, palus, a marsh 70 



Pandora, alluding to Pan- 

 dora's box 17 



Panopaea, Gr. all aperture 12 



Parmacélla, parma, a lit- 

 tle shield 61 



Parmophorus, Gr. shield 

 bearing 59 



Patella, Lat. a bason, 

 the knee pan 58 



Pécten, Lat. a comb 48 



Pectinaria, pecten, a 

 comb 4 



PectunculuSj Lat. a shell 

 fish 33 



Pedum, Lat. a shep- 

 herd's crook 47 



Pérna, Gr. a gammon of 

 bacon, pig's foot 44 



Petricola, Lat. inhabit- 

 ing rocks 18 



Phasianélla, phasianus, a 

 little pheasant 78 



Pholas, Gr. a burrow — 

 to pierce 11 



Phyllidia 57 



Phylliroe 108 



Physa G8 



Pillopsis, Gr. like a bon- 

 net ' CO 



Pinna, Lat. a plume or 

 feather 43 



Piréna, Gr. the point of 

 a sword 70 



Placéntula, Lat. a little 

 cake 104 



Placùna, Gr. a broad 

 table 52 



Plagiôstoma,Gr. oblique 

 mouth 48 



Planaxis, Lat. flattened 

 axis ? 78 



Planôrbis, planus, and 

 orhis, flat orb 68 



Pieurobranchus, Gr. 



branchiae at the side 59 

 Pleurotoma, Gr. having 



the edge cleft 80 



Plicatula, plica, a fold or 



wrinkle 49 



Pneumodérmon, Gr. skin 



like lungs 57 



Podopsis, Gr. like a fool 50 

 Pollicipes, pollex, the 



thumb and pes, the 



foot, great toe 8 



Polygyra, Gr. many 



whorls 64 



Polystomélla, Gr. many 



mouthed 105 



Psammobia, Gr. living 



in sand 19 



Pterdcera, Gr. horned 



wing 85 



Pterotrâchea, Gr. wing- 

 ed trachea 108 

 Pupa, Lat. a puppet 65 

 Purpura, Lat. a shell 



producing purple 87 



Pyramidclla, pyramis, a 



pyramid 



67 



Pyrgoma, Gr. a tower 8 



Pyrula, pyrum, a little 



pear 81 



Radiolites, radius, a ray 53 

 Ranélla, a little frog 82 



Renulites, from ren, the 



kidney 101 



Ricinula, (ricinus,) like 



the castor oil seed 87 



Rostellciria, Çrostelhim,) 



a little beak 84 



Rotalites, (rota,) a wheel 103 

 Rotclla, Lat. a very 



small wheel 76 



Sabellciria, sabulum, 



coarse sand 4 



Sanguinolària, sanguis, 



blood 19 



Saxicciva, saxum, a rock 



and cava, to hollow 18 



