Vol. VII] WARING—STRATIGRAPHIC AND FAUNAL RELATIONS 67 



immediately below the angle, which is subacute, and swells 

 out widely near, or a little below it ; base obliquely and some- 

 what concavely truncated, on the inner side; umbilicus widely 

 and deeply funnel-shaped, with a distinctly carinated margin ; 

 aperture longer than wide, outer lip simple; inner lip nearly 

 straight; surface marked by fine lines of growth. Locality 

 1. L. S. J. U. Pal. Coll. 



Gyrodes compressus, new species 



PI. 9, Fig. 6 " 



Shell medium size, thick, subglobose, about as wide as high; 

 spire depressed nearly to the level of third whorl and narrow ; 

 whorls four, the outer two sharply rounded near the suture 

 and concavely constricted immediately below the rounded 

 part; aperture subcircular, but angulated at the top; umbilicus 

 small; surface marked by coarse lines of growth. Locality 

 1. L. S. J. U. Pal. Coll. 



Perissolax brevirostris Gabb 



P. brevirostris Gabb, Pal. Cal., vol. 1, p. 91, pi. 18, fig. 43. 



"Shell short, robust, thick; spire of moderate height; 

 whorls five, enveloped, such that only the upper part of the in- 

 ner whorls are visible. Suture distinct, bordered below by a 

 carina, or swelling of the upper part of the whorl. Apical 

 angle variable, usually obtuse." Surface marked by short 

 longitudinal folds on the body-whorl, crossed by distinct 

 raised spiral ribs which are biggest at the base of the body- 

 whorl. Two or three blunt tubercles on each fold are con- 

 nected by low rounded ribs. Mouth wide above and narrows 

 suddenly into a long slender canal. Columella incrusted and 

 somewhat undulated in the middle. 



A single fragmentary specimen of this species was found in 

 the Chico sandstone. Locality 1. L. S. J. U. Pal. Coll. 



Pugnellus rotundus, new species 



PI. 9, Fig. 10 



Shell robust, spire moderately high ; whorls five, rounded, 

 ornamented by fine spiral lines on the upper whorls; body- 

 whorl ornamented by a row of small tubercles just above the 



