1917] Nomland: The Etchegoin Pliocene of Middle California 211 



Arnold, Chione elsmerensis English, Chione fernandoensis English, 

 Dosinia jacalitosana Arnold, Macoma vanvlecki Arnold, Paphia 

 jacalitosana Arnold, Chrysodomus portolaensis (Arnold), Margarita 

 johnsoni Arnold, and Thais kettlemanensis Arnold. 



LIST OF INVERTEBRATES FROM THE "JACALITOS" OR LOWER 

 ETCHEGOIN, WITH OCCURRENCE AT OTHER HORIZONS 



ECHINODERMATA 



Astrodapsis jacalitosensis Arnold 



Astrodapsis peltoides Anderson and Martin 



Astrodapsis, n. sp. A 



Dendraster gibbsii (Remond) 



Dendraster gibbsii, n. var. B 



Dendraster eoalingensis Twitchell 



Pelecypoda 



Acila eastrensis (Hinds) 



Area trilineata Conrad 



Cardium quadrigenarium Conrad 



Chione elsmerensis English 



Chione fernandoensis English 



Cryptomya californica (Conrad) 



Cryptomya quadrata Arnold 



Cumingia californica Conrad 



Cyrena californica Gabb 



Diplodonta parilis (Conrad) 



Dosinia jacalitosana Arnold 



Glycimeris eoalingensis Arnold 



Glycimeris septentrionalis (Middendorf) .... 



Leda, cf. tephria Dall 



Macoma baltica (Linne) 



Macoma jacalitosana Arnold 



Macoma nasuta (Conrad) 



Macoma secta (Conrad) 



Macoma vanvlecki Arnold 



Metis alta (Conrad) -. 



Modiolus rectus Conrad 



Monia macroschisma (Deshayes) 



Mulinia densata Conrad 



Mytilus eoalingensis Arnold 



Mytilus kewi Nomland 



Ostrea atwoodi Gabb 



Pandora punctata Conrad 



Panope generosa (Gould) 



