208 CALIFORNIA ACADKMY OF SOIENCES. 



178. Drillia pudica Hinds. 



I'lAih VIII, I'u.. 13. 



PUiirotoma pitdica Hr)S., Proc. Zool. Soc, 1843,1). 4'> Voyage Suliihur, p. 20, PI. VI, fi}";. 11, 1844. 

 Cpr., Brit. Assn. Rept., 1856, p. 330. Tryon, Man. Conch., Vol. VI, p. 1S9, 

 PI. XIII. fig. 55, .884. 



Shell small, resembling D. torosa in geni-ial appearance; whorl.s seven, angular, convex 

 heiow, concave above, with twelve or thirteen transverse ribs, nearly ail of which extend from suture 

 to suture, but le.ss prominent on the concave surface; surface sjjirally sulcate; in other respects 

 similar to torosa. 



Dimensions. — Long. 11 mm.; lat. 4 mm.; defl. 25 degrees. 



1 )istiii,iiuisli;il)lo from I), iorosd by the long transverse rib.s, and liy the more 

 convex outline of the whoK' ."hell. Specimen identified by Dr. Pall. 



Rare; one specimen from tipper San Pedro .series of San Pedro, which 

 is figiiiid, and is now in the collection of Delos Arnold. 



Living. — Cenlral America (Carpenter). 



Pleistocene. — San Pedro (Arnold). 



179. Drillia renaudi, sp. nov. 

 I'l.ATK VIII, Fic. .5. 



Shell small, fusiform, turreted; apex blunt; whorls eight, sharply angular, with angle aiiout 

 two-fifths distance from anterior margin of whorl; up|)er and lower surfices flat; aljout lifleen oblique 

 nodes ornament the angle and extend down on tiu; lower |)ortion ot the whorl, becoming obsolete 

 before reaching the suture; nodes obsolete on body-whorl; suture deeply imi)ressed, distinct; 

 aperture short, elliptical, oblicjue; posterior sinus broad, shallow; anterior sinus long, straight; 

 columella incrusted within; body-whorl angular, ventricose, much produced and narrow below, 

 smooth, except for very faint incremental lines. 



Dimensions. — Long. 15.8 mm.; lat. 6 mm.; body-whorl 9 mm.; ajjcrture, including canal, 

 7 mm.; canal 2 mm.; defl. 35 degrees. 



Different in sliapc from any other mcml)cr of this genns found in these 

 deposits. J)istingiiishal)le by the smooth, ventricose body-whorl, sharply angulated 

 whorls, nodose angle, and long canal. This .S2:)ecies has the long canal of D. perrersa, 

 the angular whorls of Leucoaijrinx pedroaiin, and the nodes, though less prominent, 

 of D. toro)>a. Specimens pronounced a new species by Dr. Dali. Named in 

 honor of Ralph E. Renaiid, wiio has prepared many of tlic drawings which illustrate 

 this paper. 



Rare; one specimen from Pliocene and one (type) from lower San Pedro 

 series of J)eadman Island. The specimen figured is the type, which is now in the 

 United States National Museum. 



Pleistocene. — San Pedro (Arnold). 



Pliocene. — San Pedro (Arnold). 



