580 SCIENTIFIC KECOED FOR 1884. 



in thickness, are su])posed to represent the lower part of the middle Cre- 

 taceous, notwithstanding" the fact that they contain many fossils consid- 

 ered Jurassic by previous American authors. However, tlie identity of 

 these species is very doubtful. The upper division, containing- Inocera- 

 mus prohlematicus, is 1,500 feet thick and is separated from the three 

 lower divisions by 2,000 feet of unfossiliferous strata, the whole mass 

 resting unconformably upon what is considered the Triassic. The au- 

 thor is driven by his conclusions to assert that the Jurassic of the Black 

 Hills and Eocky Mountains is Cretaceous. In order to make a more com- 

 plete Cretaceous series, he cuts out the entire Jurassic formation. Mi\ 

 Whiteaves seems to have overlooked the work of Mr. C. Grewingk, who 

 described the fossils brought back by Ilia Wossuessensky, the work of 

 Eichwald, who described the fossils brought back by Doroschin, and 

 that of Pinart, all three describing a somewhat similar fauna in Russian 

 America. He has also not noticed the fact that traces of a Jurassico- 

 cretaceo fauna occur from the neighborhood of Moscow, through Siberia 

 to Alaska, and that very ])ossibly he has similar i)assage beds in British 

 Columbia and Queen Charlotte's Islands, that such passage beds are 

 found between every formation, and that the occurrence of some of our 

 Jurassic fossils in such a conne(;tion is a poor reason for calling Creta- 

 ceous the beds where there is no such associytion. 



The following new species are described : Belcmnites slddegatensisf, 

 Spiroceras carlofiensis. SpJienodiscKs viavdensis, Hnploceras cnmsheicaense, 

 Stephanoceras ohlatnm^ tStephonoceras ce/Ku'den, Eamites? fjlaher^ Xerincca 

 mandensis, Cerithivin sMdegatenfte, VaniJcoro pulchellaf, Calliostoma con- 

 stricfum^ Cinulia jmsiUa, Corbula concinna, Periploma cufipidnfum, Thru- 

 cia aemiplanata, Tellina .sMderjatensis, TlieUs affinis f, Cyprina occiden- 

 talism Trigonia mandemis, Yoldia aiafa, Trigonoarca tuinida, Lithodomus 

 jnanden.sisj Melina .slidegatensis, Inocerainus moreshyensis, Amusium len- 

 ticulare f Osfrea slidegatensis ?, Astroea'nia irregularis, Schloenhachia pro- 

 pinqiia, Cardium ininididum, Fecfen, carJottensis, RhynchoneUa mandtnsis, 

 Discina semipolita. 



Whiteaves, J. F. — On the Lower Cretaceous Rocks of British Colum- 

 bia. (Trans. Roy. Soc. Canada, section iv, 1882, pp. 81-80.) 

 Describes three new species, illustrated by three woodcuts in the 

 text: Olcostephanus quairinoensis, PhoJadomya ranc(niverensis, Inocera- 

 inus quatsinoensis. I\Ir. Whiteaves holds with Eichwald that the pres- 

 ence of an abundance of Aucellw is a sure proof of the Neocomiau age 

 of the rocks in which they occur. 



Whiteaves, J. F. — On some supposed Annelid tracks from the Gasp6 

 Sandstone. (Trans. Roy. Soc. Canada, section iv, 1882, pp. 109-111, 

 pis. xi and xii.) 



Mr. Whiteaves i)roposes the name of Gyrichnites gaspensis for certain 

 supposed annelid tracts of the Lower Devonian of Point Gaspe, and 

 illustrates them on two i)lates, unfortunately on a reduced scale. 



