ingeksoll.] ZOOLOGY UNIONID^E LIST OF AUTHORITIES. 407 



Sphwrium patella, Gould.— Walla-Walla, Oregon (XT. 8. LJxpl. Exped.). 



Sphccrium lenticula, Gld. — Lake Tahoe, Klamath and Carson Rivers, 

 Gal. (Cooper). 



Sphcerium tumidum, Baird. — Suniass Prairie, Fraser River (Lord). 



Sph'certum spolcani, Baird. — Spokane and Kootanie Eivers (Lord; 

 Hemphill). 



Sphcerium tenue, Prime. — I am confident that I secured this species 

 (one specimen) at the Rio La Plata. It has been recorded, I- think, 

 from Montana and another northern locality. It is a boreal species. 



Pisidium abditum, Haldeman. 



Camp 9: Hot Springs 30 specimens. 



Camp D : Animas Valley 1 specimen. 



Saint Mary's Lake, Antelope Park 1 specimen. 



Raft River, near Fort Hall, Idaho (Reid) ; Truck ee River (Carlton). 

 All over the continent. 



My specimens vary greatly in color, but seem to be all referable to 

 this widely-distributed species. Many are about half-grown. 



Pisidium compressum, Prime. — White Pine, Nevada ; Owen's River, 

 California (Hemphill). Northern States and Canada. 



Pisidium occidental, Newc. — Truckee River, Nevada (Carlton). 'Cali- 

 fornia. 



Pisidium ultramontanum, Prime. — Canoe Creek, Pitt River, California 

 (Cooper). 



UNIONID^. 



Vnio luteolus, Lam. — Missour i River, above the Falls ( Cooper). United 

 States generally.. 



Margaritana margaritifera, Linn. — Missouri River above the Falls; 

 Spokane River below Cceur d'Alene Lake {Cooper); Salt Lake, Utah, 

 or Fort Hall, Idaho (Reid) ; Truckee River, Nevada (Carlton). Cosmo- 

 politan. This Mollusk is eaten by the Indians east of the Cascade 

 Mountains. 



Anodonta angulata, Lea. — Idaho, Montana (Cooper); Columbia River 

 (Lord.) Considered at most only a variety of the foregoing. 



Anodonta oregonensis, Lea. — Abundant east and west of the Cascades 

 (Lord); Montana (Cooper). 



Anodonta Nuttalliana, Lea. — Idaho (Cooper). 



Anodonta whalamatensis, Lea.— Idaho, to British Columbia (Cooper). 



LIST OF AUTHORITIES. 



The following list of authors is intended to include all of the books 

 and papers published in English that contain direct reference to the 

 mollusca of the Central Province, so called. ' 



Such general works as Gould's Shells of the United States Exploring 

 Expedition, Dr. Binney's Terrestrial Mollusks, Haldeman's Monograph 

 of the Limnseidse,* Lea's Observations, Binney and Bland's Land and 

 Fresh-Water Shells of North America, and Pfeiffer's Monographia 

 Heliceorum, must, of course, be consulted in working up the molluscan 

 fauna of any district, but scarcely require mention among special author- 

 ities. 



Baird. Descriptions of some new species of shells collected in Van- 

 couver's Island and in British Columbia, by J. K. Lord, 1858-G2 : 

 by Wm. Baird, M. D. Proc. Zool. Soc. of London, 1863-67. 



