WHITEAVE6.] LARAMIE AND CRETACEOUS INYERTEBRATA. 33 



The distinction between Pseudoptera, Meek, and Mdeagrina. Lamarck, 

 is not very elearly defined, and it is possible and by no means impro- 

 bable that the present species may be congeneric with the Meleaqrina 

 antiqua of the Chico group of California and with the M. amygdaloidea 

 of the Middle Ci-etaceous of Skidegate Inlet in the Queen Charlotte 

 Islands. 



Inocerajius alius, Meek. 



Jnoct/v/miis altv,% Meek. 1871- Dr. Hayden's Eep- U.S. Geol. Surv. Terr., p. 302. 

 1S76. Eep. r.S. Geol. Surv. Terr., vol. IX., p. 43. pL 14, 

 figs. 1, a, b. 



Whitfield (as of Meek). Pal. Black Hills Dakota, p. 391, 

 pi. 9, fig. 11. 



East Fork of the :\Iilk Eiver, G. M. Dawson. 1874, H.M. Xorth 

 American Boundary Commission : a number of well-preserved but 

 much distorted specimens, from a boulder. Most of these agree fairly 

 with 3Ir. Meek's and Prof Whitfield's descriptions and figure- of I. 

 alius, but one of them is strikingly like Prof Whitfield's figure of a 

 shell which he regards with doubt as possibly a variety of the I. 

 Yanuxemi of Hall and Meek, on pi. 7. fig. 10, of the " Palaeontology of 

 the Black Hills of Dakota." 



Inoceraml's Barabini, Morton. 



Inoaramas Sarafnai, Morton. 1834. Svnops. C»r-'. Rem., p. 02, pi. 17, fig. 3 (pL 13, 



fig. 11?). 

 Inoceramus gihhm, Tuomey. 18.54. Proc.Ac. Xat. Se. Phila., vol. YII., p. 170. 

 Inocerormufi cv:neatu.s, INIeek and Hayden. 1860. lb., 181. 

 Inoceramus Crippsii? xa.T. Barahi III, ^loTton. Meek. 1876. Eep. U.S. Geol. Surv. 



Terr., vol. IX., p. 49, pi. 13, figs. 1, a, b, c, and pi. 12. fi^-. 3. 

 Inocerarnm Barabini, Whitfield. PaL Black Hills Dakota, p. 398, pi. 7, fig. 7 and 



pi. 9, fig. 8. 



Twelve miles east of White Mud Eiver (or Frenchman's Creek), <_t. 

 M. Dawson, 1874, H. M. Xorth American Boundary Commission: 

 seven specimens. Elbow of South Saskatchewan, Prof J. Maeoun, 

 1879 : two good specimens and two imperfect oncb. 



July, 1885. « 3 



