580 SCIENTIFIC RECORD FOR 1834. 



in thickness, are supposed 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, the identity of 

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

 mus prohlematkus^ is 1.500 feet thick and is sei)arated from the three 

 lower divisions by L*,UOO feet of unfossiliferous strata, the whole mass 

 resting unconformably ui)on what is considered the Triassic. The au- 

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

 Hills and IJocky Mountains is Cretaceous. In order to nuike a more com- 

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

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

 described the fossils brought back by Ilia Wossnessensky, 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 tbat very possibly he has similar i)assage beds in British 

 Columbia and (^ueen Charlotte's Islands, that such passage beds are 

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

 Jurassic iossils in sucli a co)inectit)n is a poor reason for calling Creta- 

 ceous the beds where there is no such association. 



The following new species are described : Belemnites siddegatensis f ^ 

 Spiroceras carlotiensis, Sphenodhcvs manflenKis, Haploceras cumsheicacnse., 

 StephanoceraH oblatum, -Stephanoceras cepnides, Eamitesf glaber, Xcrincva 

 juandensiSj Cerithivm sMdcf/atenfie, Vaniloro jfwlchellqf, CalUostoma con- 

 stricium, Cltiulia prmlla^ Corhidti r(>ncin)ia, Periploma cuspidatum^ Thra- 

 cia semiplanata, Tellina sJcidegate^isis, Thetis affinis f, Cyprina occiden- 

 tallH, Trigonia mandenfiis, YoJdia arata, Irigonoarca tuinida^ Lithodomus 

 mandensis^ Mdina slidegatensis, Inoeeran.us moresbyensis, Amu.sium len 

 ticulare f Ostrea xMdegatensiHf^ Asfrocoenia inrg ularis, Schloenhachia pro- 

 pinqiKi., Cardium tiiniidiilum, Fecfen carlottensis, EhynchoneUn 7n(indcnsi.s, 

 Diseina sem ipolita. 



Whiteaites, 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 : Olcosfephanufi quatrinoensis, Pholadomya rancovverensis, Inocera- 

 muH qiiaUinoensis. Mr. Whiteaves holds with Eichwald that the pres- 

 ence of an abundance of Aucelke is a sure proof of the IS^eocomian ago 

 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 proposes the name of Gyrichnites gaspensis for certain 

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

 illustrates them on two plates, unfortunately on a reduced scale. 



