Geological Papers. 189 



22. Teredo bulbosus n. s. Plate III, fig. 22. 



■'Cast" of large size, cylindrical, and characterized by having 

 bulbs or nodes on it at frequent intervals. 



Specimen obtained from the lower series at East Clallam; for- 

 mation, Oligocene-Miocene. 



Class ScAPHOPODA; Order Solenoconchia. 

 Family XL Bentaliid^ ; Genus Dentalium Linne. 



Shell tube-like, tapering, with strong longitudinal ribs and with 

 apical notch short or wanting. 



23. Dentalium substriatum Conrad. Plate III, fig. 23. 

 Teredo substriata Con., Wilkes's Expl. Exped., 1850, p. 728, pi. 20, fig. 7. 

 Dentalium substriatum Woodw., Brit. Assn. Kept., 1856. 

 Dentalium substriatum Con., Jour. Conch., 1865, p. 151. 



Shell nearly straight, cylindrical, very slightly tapering. 

 Fragments of this shell are found throughout the entire fossil- 

 bearing sections of the Clallam formation. 

 Miocene: Astoria, Ore. (Conrad; Gabb). 

 Oligocene-Miocene: Gettysburg, East Clallam (Arnold; Reagan), 



Class Gastropoda; Superorder Streptoneura. 

 Order Ctenobranchita; Superfamily Toxoglossa. 

 Family LIV Olivid^; Genus Olivella Swainson. 



Shell small, cylindrical, polished; spire produced, acute; suture 

 canaliculated; aperture narrow behind; somewhat enlarged anteri- 

 orly; columella plicated in front, callous posteriorly; canal very 

 short. Olivella hihlicata Sowerby is a characteristic species. 

 24. Olivilla pedroana Conrad. Plate III, fig. 24. 



Strephona pedroana Con., Pac. R. R. Rept., vol. V, p. 327, pi, VI, fig. 51, 

 1854. 



Olivella boetica Carpenter, Brit. Assn. Rept., 1863. p. 661. Gabb, Pal. Cal., 

 vol. II. p. 75, 1869. Tryon, Man. Conch., p. 71, pi. XVII, figs. 28, 31, 

 34, 1883. Cooper, 7th Ann. Rept. Cal. St. Min., 1888. p. 225. Keep, 

 West Coast Shells, p. 42, fig. 21, 1892. Williamson, Proc. U. S. Nat. 

 Mus., vol. XV, 1892, pi. XIX, fig 7.^« 



Olivella pedroana Con., Arnold, mem. Cal. Acad. Sci., vol. Ill, pp. 220, 

 221, 1903. 



Shell small, elongate- elliptical; spire elevated, conical,' about 

 equal in height to the aperture; aperture elongate-triangular; colu- 

 mella not seen. 



The shell is distinguishable from 0. intorta by its slender form, 

 smaller size and more elevated spire, 



A single specimen of this species was found in the upper series 

 of the Clallam formation at Gettysburg. It is an abundant species 

 in the Pliocene of the Quillayute formation. 



46. After Arnold, loc. cit. 



