193 

 DESCRIPTION OF SPECIES. 



1. FROM THE "UPPER SHALES AND SANDSTONES," OR SUB-DIVISION A. OP 

 DR. G. M. DAWSON'S EEPORT. 



INOCERAMUS PROBLEMATICUS, SCHLOTHEIM. 



Ostracites labiatus, Schlotheim. 1813. Bronn's Jahrbuch, Vol. VII, p. 93. 



Teste Stoliczka. 



Mytilites problematicm, Schlotheim 1820. Petrefactenkunde, Vol. I., p. 302. 

 Mytiloides labiatus, Bronginart. 1822. Cuvier's Ossemens Fossiles, pi. 3, 



fig. 4, in Geol. des Env. do Paris. 

 Inoceramus mytiloides, Mantell. 1822. Geology of Sussex, p. 215, pi. 27, 



fig. 2, and pi. 28, fig. 2. 

 " Sowerby. ^1823. Mineral Conchology, Vol. V., p. 62, 



pi. 442. 

 " Goldfuss. 1836. Petrefactse Germanicse, Vol. II. p. 



188, pi. 113, fig. 4. 

 Inoceramus problematic^, d'Orbigny. 1843. Paleontologie Francaise, Terr. Cret. 



Vol. III. p. 510, pi. 406. 

 " Meek & Hayden. 1857. Proceedings of the Academy of 



Natural Sciences of Philadelphia, Vol. 



IX. p. 119. 



Meek. 1876. Report on the Invertebrate Cre- 

 taceous and Tertiary Fossils of the 



Upper Missouri Country, p. 62, pi. 9, 



figs. 3a-6. 

 Inoceramus pseudomytiloides, Schiel, 1855. Pacific Railroad Reports,Vol. II. p. 



108, pi. 3, fig. 8. 



Skidegate Inlet, Shore between Slate Chuck Brook and Lina Island : 

 five specimens. According to Dr. G. M. Dawson the typical locality 

 of Subdivision A. 



Point North of Lina Island, in Bear Skin Bay three specimens. 

 Dr. G. M. Dawson says: "This place is coloured as C on the map, 

 but the beds are disturbed, and they may not actually belong to this 

 subdivision. Their lithological character certainly resembles that of 

 the Upper Shales, but this does not go for much." 



The specimens collected by Mr. Eichardson from the Upper Shales 

 of Graham Island near Cowgitz, and mentioned on page 79 of this 

 volume as being possibly referable to I. concentricus, are now known 

 to belong to the present species. 



In Great Britain and Europe I. problematicus is stated to occur in the 

 Lower or Grey Chalk, the Turonien of d'Orbigny, and in the Upper 



