1*73 



variety. I. Whifneyiof Gabb, from the Chico Group of California, appears ' 

 to be more like the type of /. On'ppsii as figured by European writers, 

 and differs from the present shell ou\y in its somewhat greater length in 

 proportion to its height, and in its slightlj^ more prominent beaks. 



iNOCERAirus Crippsii, var. Suciensis. 



Inoceramus Crippsii, var subundaius, Meek, (in part.) — Bui. Geol. and Geogr. Surv. of 



Terr., Vol. II., No. 4, pi. 3, figs. 

 3, 3a, but not figs. 1 and la of 

 the same plate. 



Shell tranversely subovate, not much longer than high ; anterior side 

 wider as well as much shorter than the posterior ; posterior side some- 

 what produced, narrowing rapidly upwards from below, and obliquely 

 subtruncate at the end ; ventral border gibbous a little in advance of the 

 middle; umbones prominent, beaks acute. 



" Sucia Islands ; Cretaceous." Meek. S. W. side of Denman Island, 

 in Division B; J. Eichardson, IStl. A detached right valve, with por- 

 tions of both layers of the test preserved. 



This and the preceding shell both appear to be short and broad forms 

 of I. Crippsii, but in the variety proximus, (or subelongatus) the posterior 

 side is wider than the anterior, and the umbones are not prominent. 

 Ml'. Meek's figures on plate 3 of Vol. II., No. 4, of the Bulletin of the Geo- 

 logical and Geographical Survey of the Territories give a very correct 

 idea of the outline of the valves, and of the relative proportions of the 

 umbones in both varieties ; but it is worthy of note that the right valve 

 of the var. Suciensis, from Denman Island, is much more inflated than it 

 is represented as being in the specimen tigured by Mr. Meek, and that 

 the concentric folds of the former are nearly obsolete. 



Inoceramus Crippsii, var. Barabini. 



Inoceramus Barabini, Morton. — Syn. Org. Eem., (1834) p. 62, pi. 17, fig. 3. 



Inoceramus gibbus, Tuomey. — Proc. Ac. Nat. Sc. PhiL, (1854) Vol. VII., 



p. 170. 

 Inoceramus cuneatus, Meek & Hayden. — 1860, lb., p. 181. 



Inoeeramtts Crippsii? var. Barabini^ Morton. — Meek. Rep. Inv. Tert. and Cret. Foss. U 



Miss. Co., p. 49, pi. 12, fig. 3, pi. 13, figs. 



la, 6 and c, also woodcuts Nos. 1 and 2 



on p. 50. 



New Jersey, Morton; Alabama, Tuomey; Yellowstone Eiver, Mon- 



M 



