ARNOLD — THE PALEONTOLOGY AND STEATIGKAPHY OF SAN PEDRO. 2G9 



Ventura; and at Spanish Bight, San Diego. The specimen figured is from the upper 

 San Pedro series at San Pedro, and is now in the collection of Delos Arnold. 



Living. — Gulf of California; Ecuador (C'arpenter). 



Pleistocene. — San Pedro; Ventura; San Diego (Arnold). 



283. Eulima micans Carpenter. 



Plate IX, Fig. 12. 



Eulima micayis Cpr., Brit. Assn. Rept., 1863, p. 659. Reeve, Conch. Icon., p. 33, 1865. Tryon, 

 Man. Conch., Vol. VIII, p. 272, PI. LXIV, figs. 29, 30, 1886. Cooper, 7th Ann. Rept. 

 Cal. St. Min., 1888, p. 240. Keep, West Coast Shells, p. 50, fig. 32, 1892. Williamson, 

 Proc. U. S. Nat. Mus., Vol. XV, 1892, p. 209. 



Shell small, turreted, glossy; apex acute; whorls ten, flat; body-whorl convex; suture 

 distinct, not impressed; aperture elongate-ovate; outer lip thin, rather arcuate; inner lip slightly 

 incrusted. 



Dimensions. — Long. 12 mm.; lat 3.2 mm.; defl. 25 degrees. 



Distinguishable from E. falcatn by straight spire and less bulging outer lip; 

 distinguishable from E. hastata by even convexity of body-whorl. The specimen.s 

 described were identified by Dr. Dall. 



Found in the lower San Pedro series at Deadman Island and San Pedro, and 

 in the upper San Pedi'o series at Crawfish George's, Los Cerritos, and San Pedro. 

 The specimen figured is from the lower San Pedro series at Deadman Island, and is 

 now in the collection of Delos Arnold. Found also in the Pleistocene at Barlow's 

 ranch, Ventura, and at Spanish Bight, San Diego. 



Living. — Straits of Fuca to San Diego (Cooper). 



Pkii<iocene. — Santa Barbara to San Diego (Cooper): San Pedro; Ventura; 

 San Diego (Arnold). 



Family LXIV. PYRAMIDELLID^.' 



Genus Turbonilla Risso. 



Turbonilla Risso, Hist. Nat. Eur. Merid., Vol. IV, p. 224, 1826. Type, Turbonilla typica Dall & 

 Bartsch, =^Turbonilla pHcatula Risso, 1826, nan Turbo (= Turbonilla ) plicatnlus 

 Brocchi, 1814. 



Shell with sinistral nucleus, slender, having many whorls, with axial  or spiral sculpture, or 

 both; columella straight or twisted, usually with a single fold, which is rarely obsolete; operculum 

 horny, subspiral, with spiral striae on its outer surface. 



Animal with wide, flattened tentacles; mentum elongated, flattened, and bilobed in front; 

 foot large, short, auriculated anteriorly. 



^ The portion of the text relating to this family has been prepared, under the supervision and with the assistance of W. H. 

 Dall, by Paul Bartsch, aid in the United States National Museum. 



-Sculpture following the direction of the coil of the whorls is in these diagnoses referred to as spiral. That at right .ingles to 

 the spiral sculpture, or in general parallelism with the axis of the shell, is called axial. An endeavor has been made to Include all the 

 Pleistocene species known from California, some of which, though found at San Diego, have not yet been obtained at San Pedro. 



