172 



and veiy decidedly curved inwards. The extraordinary protuberance of 

 the umbones in some individuals of this species, to which reference is 

 made by Dr. Shumard, appears to the writer to be due to a distortion of 

 the shell at an early stage of growth. 



Inoceramus Nebrascensis, var Sagensis. 



Inoceramus Nebrascensis, Owen. — Rep. Geol. Minnesota, Iowa and Wis- 



consin, (1852) p. 582, pi. 8, fig. 1, 



Inoceramus Sageyisis, Owen. — lb., pi. 7, fig. 3. 



Inoceramus Sagensis^ var Nebrascensis, Meek. — Rep. Inv. Tert. and Cret. Foss. U. Miss. 



Co., p. 52, pi. 13, figs. 2«, b. 



"Septarian clays at Nanaimo and'Valdez Inlet;" Etheridge. Sucia 

 Islands, in Division A ; J. Eichardson, 1874. A single right valve, 

 measuring about four inches and a quarter in length, by three inches and 

 three quarters in height. 



(Inoceramus Texanus, Conrad. 



Inoceramus Texanus^ Conrad. — Emory's Rep. on the U. S. and Mex. Bound. Surv., Vol, 



I., (1857) p. 152, pi. 5, fig. 7. 



"Septarian clays at Nanaimo and Valdez Inlet ;" Etheridge. An 

 imperfectly characterized species, not identified as occurring in any of 

 JVIr. Eichardson's collections,") 



Inoceramus Crippsii, var proximus. 



Inoceramus proximus, Tuomey. — Proc. Ac. Nat. Sc. Phil., 1854, Vol. VII. 



p. 171. 

 Inoceramus subundatus, Meek. — Id., 1861, Vol. XIII., p. 315. 



/. proximus, Tuomey ? Meek. — Rep. Inv. Tert. and Cret. Foss. U. Miss. 



Co., (1876) p. 53, pi. 12, figs, la, b. 

 « " " " var subcircularis. Meek. — lb. p. 55, pi. 12, figs. 2a, b. 



I. Crippsii, var subundatus. Meek. — Bui. Geol. and Geogr. Surv. of Terr., 



Vol. II., No. 4, (1876) p. 358, pi. 3, 



figs. 1 and la, but perhaps not figs. 



3 nor 3a of the same plate. 

 .?=/. Whitneyi, Gabb. —Pal. Gal., Vol. II., (1869) p. 193, pi. 



32, fig. 91. 



Lower jjart of the Trent Eiver, in Division B ; Nanaimo Eiver, two 

 miles and a quarter up, and Blunden Point, V.I., also at the Sucia Islands, 

 in Division A; J. Eichardson, 1871-74. 



The writer feels satisfied that the I.proximus from Mississippi, Alabama 

 and the Upper Missouri Country cannot be satisfactorily separated from 

 the I. subundatus of Vancouver Island, even as a tolerably well marked 



