158 PALAEONTOLOGY OF CALIFORNIA. 



• 

 by twelve to fourteen broad longitudinal ribs, each point of in- 

 tersection being marked by an enlargement of the revolving ribs. 

 Aperture broad in the middle, narrowed and straight in advance; 

 outer lip acute and undulated on the margin, inner lip thickened, 

 flattened, and bearing two distinct oblique folds in the middle; 

 canal produced, straight. 



Length, 1.2 inch; length of aperture, 1 inch ; width of body whorl, .6 inch. 

 Rare in the Martinez Group, Martinez. Mr. Mathewson. 



MITRA, Lam. 



M. cretacea, Gabb. 



(Mitra cretacea, Gabb ; Pal. Cal., Vol. 1, p. 103, pi. 28, fig. 215.) 



Since the publication of the first volume of the Report, another specimen of this 

 rare species has been obtained at the same locality, from the Tejon Group. It 

 differs in some respects from the first, showing faint traces of crenulation on the 

 angle of the upper whorls, the body whorl is more robust, and the anterior end, 

 which was absent in the first specimen, is regularly tapering, making the aperture 

 slightly longer than the spire. All of the whorls are more distinctly carinated on 

 the angle than in the specimen figured. 



FICOPSIS, Con. 



Mr. Conrad proposed this name to include a group of thin subfusiform shells, 

 apparently allied to Ficus, but with a somewhat higher spire, and a straight, or 

 nearly straight, and somewhat produced canal. The group seems to be a well 

 defined one, and includes numerous species in the newer Cretaceous, and in the 

 Eocene. His type is his Ficus penitus, = Pyrula cancellata, Lea, of the Alabama 

 Eocene. 



The following Californian species belong to this type : 



F. Remondii, Gabb. 



(Fusus (Hemifusus) Remondii, Gabb ; Pal. Cal., Vol. 1, p. 87, pi. 18, fig. 36.) 



F. Hornii, Gabb. 



(F. (H.) Hornii, Gabb; Pal. Cal., Vol. 1, p. 86, pi. 28, fig. 206.1 



