44 TERTIARY AND QUATERNARY PECTENS OF CALIFORNIA. 



Class PELECYPODA— Continued. 



Order FRIOXODESMA C'E.l— Continued. 

 Superfamily PECTINACEA— Continued. 

 Family Peitixid.e— Continued. 



Genus T'eclen Miiller — Continued. 



Recent Pectens — Continued. Page. 



P. (Chlamys) islandious Miiller (persists from Pliocenel ll.'-i 



P. (Chlamys) latiauritus Conrad (persists from Pliocene) U.t 



P. (Chlamys) latiauritus var. delosi n. var. (persists from Pleistocene). 130 



P. (Chlamys) latiauritus var. fucicolus Dall ( persists from Pleistocene). 131 

 P. (Chlamys) latiauritus var. nionotimeris Cunrad (persists from 



Pleistocene ) 131 



P. ( .Equipecten) palmeri Dall 136 



P. ( Plagioftenium ) paucicostatus Carpenter 137 



P. ( Plagioctenium ) circularis Sowerby ( persists from Pliocene) 12.T 



P. (Plagioctenium) circularis var. iequisuleatus Carpenter (persists 



from Pleistocene) 132 



P. (Pseudamusium) davidsoni Dall 1.3.S 



P. ( Pseudamusium ) randolphi Dall 138 



P. (Pseudamusium) randolphi var. tillamookensis n. var 139 



P. ( Pseudanuisiuni ) vancouverensis Whiteaves 140 



1*. ( Propeamusium ) alaskensis Dall ( persists from Pleistocene) 133 



I'. ( Hinnites) giganteus Gray (persists from Miocene) 93 



Unidentifiable Pectens 141 



P. catilliforniis Conrad (Miocene) 141 



P. nevadanus Conrad (Miocene) 141 



P. pyxidatus (Recent) 141 



P. subcrenatus Carpenter ( Recent ) 142 



1'. townsendi Gould (Recent) 142 



Sumninrif of tin futhtit'twrn tmd npfrifn. 



Number of subgenera represented 11 



Number of species represented 76 



Old species 36 



New species 40 



Number of varieties represented 17 



Old varieties 7 



New varieties 10 



Number of species included in Pecten s. s 13 



Number of species included in Patinopecten 8 



Number of species included in Nodipecten 2 



Number of species included in Chlamys 17 



Number of varieties included in Chlamys 11 



Number of species included in Lyropecten 9 



Number of varieties included in Lyropecten ' 3 



Number of species included in jEquipecten 1 



Number of species included in Plagioctenium 11 



Number of varieties inclucied in Plagioctenium 2 



Number of species included in Pseudanuisium 6 



Number of varieties included in Pseudanuisium 1 



Number of species included in Amusium 1 



Number of species included in Propeamusium 6 



Number of species included in Hinnites 1 



