530 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxii. 



OCINEBRA TOPANGENSIS, new species. 

 Plate XLIII, fig. 4. 



Descpiptlon. — Shell large for one of this genus, fusiform; spire ele- 

 vated, subacute; whorls five, strongly angulated above, giving a tab- 

 ulate appearance to upper portion; whorls crossed by six or seven 

 frills, some of which Hex forward and rise to prominent points on the 

 angle; anterior portion of whorls ornamented by about 12 rough, raised 

 spiral lines, the alternate ones being relatively more prominent than 

 those adjacent; posterior portion with six or seven similar lines; suture 

 deeply appressed, undulating, distinct. Aperture subelliptical; inner 

 lip slightly enameled; columella twisted, squamose, only slightly 

 widened; umbilicus subperforate; canal of medium length, narrow. 



Dimensions. — Altitude, 59 mm.; latitude, 30 mm,; body whorl, 46 

 mm.; aperture, 39 mm, 



Hates. — The largest member of this genus known from the West 

 Coast. Somewhat similar to O. keepi Arnold but much larger, with 

 less prominently developed frills and much finer spiral sculpture. 

 Named for the type localit3^ Topanga Canvon. 



Type.— C2.t. No. 164995, U.S.N.M. 



Locality. — Head of Topanga Canyon, 3 miles south of Calabasas, 

 Los Angeles Count}^, California. (G. W. Edmond and Ralph Arnold.) 



Horizon. — Lower Miocene. 



PUPURA EDMONDI, new species. 

 Plate XL, figs. 3 and 3a. 



Description. — Shell fusiform, moderately thick; spire elevated; apex 

 .subacute; whorls four or five, angulated, the bod}^ whorl particu- 

 larly so; nine or ten prominent nodes on the angle, each node grad- 

 ually fading out above and below the angle; spiral sculpture consists 

 of more or less obsolete ridges, of which there are about fourteen on 

 the body whorl below the angle and three or four above it; suture 

 appressed, distinct, somewhat wavy, the surface of the shell being cor- 

 rugated near it. Aperture p3"riform; outer lip slightly effuse, den- 

 ticulated with seven or eight quite sharp and prominent teeth. Inner 

 lip smooth. Umbilicus subperforate. Canal short, curved backward. 



Dimensions. — Longitude, 19 mm.; latitude, 12.5 mm.; body whorl, 

 16.5 mm.; aperture, including canal, 14 mm. 



Notes. — Unlike any other Purpura on the coast. Resembles Cuiaa 

 hiplicata Gabb, but with angle higher up on whorl; umbilical region 

 also more simple than in latter species. Named in honor of Prof. 

 Geo. W. Edmond, of Santa Monica, California, who first discovered 

 this species. 



Type.— Cat. No. 164983, U.S.N.M. 



