1922] Fauna from the Eocene of Washington 37 



along the mid-dorsal line, the ribs are interrupted more or less by a shallow 

 groove. 



The sculpture of this shell is Trivia>-\ike, but the anterior attenuation is not 

 distinctive of that genus. Dr. Dall has kindly examined this form and pointed 

 out its position in the genus Hratopsis Hoernes and Auringer. The type of that 

 genus is H. Barrandci from the Miocene of Italy. (Abhand. der K. K. Geol. 

 Reich. Band XII, Heft I, p. 63, pi. VIII, Fig. 8, 9, 10). Cossmann has figured 

 H. crenata Deshayes from the Eocene of the Paris Basin. (Essais Comparree 

 p. 183, pt. V, pi. IX, figs. 16-17, 1903). 



H. crescentensis n. sp. shows a greater constriction of the anterior region 

 than that of the type of the genus. 



Dimensions. Altitude 6 mm. ; width 4 mm. 



Occurrence. At locality 358 (University of Washington Palaeontological 

 Collection) at Joice station, one- fourth of a mile ea?t of Tongue Point, Port 

 Crescent, Clallam county, Section 22, Township 31 North, Range 8 West. 



GENUS GALEODEA LINK 



GALEODEA TUBERCULATA (Gabb) var. CRESCENTENSIS n. van 

 Plate XI, Figures 18, 20 



Description. Shell of medium size, spire acute ; whorls six ; suture ap- 

 pressed; canal short, reflected; callus thin, spreading; three small plications on 

 the anterior end of the columella; aperture elongate, outer lip thickened with a 

 groove along the interior of the margin ; two rows of parallel tubercles on the 

 body whorl, whorls of the spire also tuberculated with small tubercles which 

 occur in two faint rows ; entire surface of the shell sculptured by revolving, flat, 

 imbricating ribs. 



This shell is like G. tuberculata (Gabb) in general shape and the number of 

 rows of tubercles. It is a smaller shell and carries the tubercles on the whorls 

 of the spire, which character is not shown on the figure of Gabbs specimen. 

 There is no indication of a vatrix on G. crescentensis nor is the outer lip crenu- 

 h:ted. This may be due to a worn condition of the shell. The outer lip of G. 

 crescentensis has a characteristic groove along the inner margin, which is not 

 noted in the other forms. 



Gale odea tri-tuberculata (Weaver) from the Cowlitz fauna has three rows 

 of tubercles constant even in young specimens. It is a stouter form, the callus 

 heavier and the canal longer and more strongly reflected. The sculpture of 

 G. tri-tuberculata consists of alternating, large and small, raised revolving lines. 



