29 MARINE SHELLS. 
OPALIA. 
OpaliaOredlis. so. Sie sees Gla... ols California 
Qpalia erenatioides......- 2.06. Oor ss 2b ee California 
¢ var; insculpta. pr... )...2. eee California 
i es Went oe Auris te epee ODP i105. oa ee .. California 
OSTREA, 
Ostreaiconchaphila... 0.4 2.205 Cf... 2 ae California 
Ostrea latieandatac, 2.52.5) ROD). ks. CO California 
(Oeiren MMOs. See Ue ean st Cor: «. .. 2) eee Yalifornia 
PACHYDESMA. 
Pachydesma crassatelloides..... Conr. -. . .S2e-5ee eee California 
PACHYPOMA. 
Pachypoma gibberosum........ Chem... ts sae California 
PARAPHOLAS. 
Parapholasecalitornices... 2. 25%): OY) arene California 
PECTEN. 
Pecten acquisuleatus....°...... Opie s.203, eee Peres California 
Pecten HOri@eus. sie. sew is cao ees Hds. (See Janira.).. California 
Pecten: hastawises > <5 icra oo Boge cee Washington Territory 
re = war. hindsi 2. : Cpr....Santa Roza T., California 
‘Peetenrradiansee 2 hoc ie Ss Lan... 2. eee Massachusetts 
Pecten: latiauriisy 3-8 oe ns CHOWT. s at a ” See eee ae California 
Pecten monotimeris............ CORT ... «<a eee ",... California 
Pecten plied Af ok eee SS: LON :.:. =e Texas 
PECTUNCULUS ; 
Pectunculus = thee eras. | | '.. se Florida 
PEDICULARIA. 
Pedicularia-califormiGare nce aes) CWC... . . 22 nee California 
PEDIPES. 
Pedipesumisnlcata 7.0 eee CD... >... eee California 
