310 W. H. Ball — Fossils of the Olympic Peninsula. 



Trochita inornata Gabb. 



Trochita inornata (Gabb) Reagan, p. 195, pi. 3, fig. 31, 1909. 



This is an imperfect internal cast, but probably belongs to 

 Gabb's species. 



Eudolium petrosum Conrad. 



Bolium petrosum (Conrad) Reagan, p. 195, pi. 3, fig. 32, 1909. 

 This is correctly identified. 



Eudolium biliratum Conrad. 



Dolium biliratum (Conrad) Reagan, p. 196, pi. 3, fig. 33, 1909. 



This is a badly crushed internal cast, but is probably Conrad's 

 species. 



Fossils of the Quillayute Fokmation. 



Yoldia (Cnesterium) oregona Shumard. 



Yoldia cooperi (Gabb) Reagan, p. 206, pi. 4, fig. 34, 1909. 

 This is not the recent Y. cooperi Gabb, though closely allied. 



Cardium coosense Dall. 



Cardium meekianum (Gabb) Reagan, p. 206, pi. 4, fig. 35, 1909. 

 The type specimen comprises an internal cast of both valves of 

 what appears to be a young shell of C. coosense; but among the 

 miscellaneous duplicate material which came with the types, I 

 find a fragment which may be referable to the true C. meekia- 

 num. 



Cardium corbis Martyn. 



Cardium corbis (Martyn) Reagan, p. 207, pi. 4, fig. 36, 1909. 



The internal cast which served as Reagan's type, appears to 

 have been correctly identified. 



Mactra (Spisula) arnoldi n. nom. 



Tivela crassatelloides (Conrad) Reagan, p. 208, pi. 4, figs. 37 a., 



37 o., 37 c, 1909. 

 Mactra albaria Arnold, Bull. U. S. Geol. Survey, No. 398, pi. 41, 



fig. 4, 1910 ; not of Conrad. 

 The heavy valve referred to Tivela by Reagan, belongs to the 

 Mactroid shell figured by Arnold under the name of Albaria, but 

 which is much more elevated and triangular than the true albaria. 

 Specimens of albaria are rare in Reagan's material, though he 

 has identified one as M. falcata Gould. 



