170 Kansas Academy of Science. 



FOSSILS FROM THE OLIGOCENE-MIOCENE OF WASHINGTON ON 

 THE STRAIT OF JUAN DE FUCA. 



So far as the writer can learn, these are the first fossils ever de- 

 scribed from this region; and the only fossils so far described 

 that resemble them are the Astoria ( Oregon ) fossils of Conrad,'-^^ 

 and possibly those of the Sooke District, and of Carmanah Point 

 of Vancouver Island. ^^ 



The arrangement of the species and the respective numbers of 

 the families given are after Arnold.^^ 



In this treatise, as in that of the Pliocene shells later, the meas- 

 urements of the respective shells are given in millimeters, unless 

 otherwise stated, and the number of the shell given in the plate 

 is the number of the description of the same. All the shell draw- 

 ings are natural size, unless otherwise stated. The illustrations 

 are from drawings by my wife, Mrs. Otilla A. Reagan. 



The locality from which each shell was obtained is stated in the 

 description of that shell. 



In submitting the shell descriptions, the writer wishes to thank 

 Doctor Branner of Stanford University for the free use of the 

 books of his large geological library; and especially the volumes of 

 the Pacific Railroad Report and those of the Wilkes's Exploring 

 Expedition; also Gabb's two volumes on the Palaeontology of Cali- 

 fornia^" and Mr. Ralph Arnold's Monograph on the Paleontology 

 and Stratigraphy of the Marine Pliocene and Pleistocene of San 

 Pedro, California.^^ 



FOSSILS FROM THE CLALLAM FORMATION. 



List of fossils obtained from the' lower clay shales exposed near 

 Gettysburg, Wash.: 



Obtained by the writer. 

 Solemya ventricosa Conrad. 



Yoldia impressa Conrad. 



Thracia trapezoides Conrad. 



Obtained by Doctor Arnold.^^ 

 Solemya rubroradiata Conrad. 

 Leda sp. 

 Nucula sp ' 



Pecten clallamensis Arnold. 

 Pecten waylandi Arnold. 



27. Am. Jour. Sci.. vol. 55. 1848, pp. 432, 433, figs. 1-14; and Wilkes's Exploring Expedition, 

 vol. X. pp. 722-730, pis. 17-20. 



28. Univ. Cal. Geol., vol. 2. No. 3, pp. 101-108. 



29. Mem. Cal. Acad. Sei.. vol. ni. 1903. 



30. Pal. Cal., vol. I, 1864; vol. II, 1869. 



31. Loc. cit. 



.32. Geol. Soc. Am., vol. 17, pp. 451-468. pis. 55-58, 1904. 



