518 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [May 16, 





Crustacea 



'.. 



Callianassa Oregonensis. 



Balanus. 





Mollusca. 





Mya abrupta. 





Pectunculus nitens. 



Thracia trapezoides. 





Area devincta. 



Solemya ventricosa. 





Cardita subtenta. 



Donax ? protexta. 





Pecten propatulus. 



Venus bisecta. 





Terebratula nitens. 



angustifrons. 





Dolium petrosum. 



lamellifera. 





Sigaretus scopulosus. 



brevilineata. 





Natica saxea. 



Lucina acutilineata. 





Bulla petrosa. 



Tellina arctata. 





Crepidula praerupta ; and sp, 



emacerata. 





Rostellaria indurata. 



albaria. 





Cerithium modiale. 



nasuta. 





Buccinum ? devinctum. 



bitruncata. 





Fusus geniculus. 



Nucula divaricata. 





corpulentus. 



impressa- 





Nautilus angustatus. 



Pectunculus patulus. 





Teredo substriata. 





Echinoderms. 



Galerites Oregonensis (n. sp.). 



Foraminifera, 



3 sp. 



Plants. 

 Abies ? robusta ; Leaves of Lycopodium ?, Taxodium, Smilax, and others. 



The plants were found near the mouth of Eraser's River, and indi- 

 cate probably the commencement of the deposits of the Carboniferous 

 sera, which are largely developed in the neighbouring island of Van- 

 couver, and along the coasts and islands of Russian America. 



The interior of Russian America, like that of Oregon, is unexplored ; 

 but, in the work of Grewingk (Beitrag zur Kenntniss der orographi- 

 schen und geognostischen Beschaffenheit der Nord-West Kuste Ame- 

 rika's), and in the Geological Appendix to Capt. Beechey's Voyage 

 to Behring's Straits, by Dr. Buckland, we have a tolerably complete 

 account of the chief formations occurring along the coast, and on the 

 neighbouring islands, from 52° N. lat. to Behring's Straits. 



The only representatives of the palaeozoic rocks in this part of 

 America, hitherto discovered, are the Mountain Limestone, and other 

 members of the Carboniferous series, which are found covering the 

 flanks of the mountains here bordering immediately on the sea, 

 and prolonged into a dense archipelago of volcanic islands, several 

 of them containing active volcanos, which skirt the entire coast from 

 the parallel of 50° northward. 



Dr. Grewingk has given in the Transactions of the Mineralogical 

 Society of St. Petersburgh, for 1848-9, a complete list of the organic 

 remains hitherto discovered in Russian America, including those de- 

 scribed in the Appendix to Captain Beechey's Voyage. They afford 

 evidence of the existence of the following formations, — the Carboni- 

 ferous, Jurassic, Tertiary, and Drift, which have been traced in 

 detached sections along the coast ; leaving much still to be desired, 



