wt, ie? 
208 SHELLS OF SAN PEDRO BAY—WILLIAMSON. ; 
was found alive at Ballona Harbor by Mrs. Spar. For notes on Genota 
—section Dolichotoma—see Report on Albatross Mollusea, Dall, Proce. 
U.S. Nat. Mus., vol. x11, No. 773, p. 303. 
Genus DRILLIA Gray. 
Drillia inermis Hd. 
Found with Cerithidea californica, at Alamitos, by M. Estella Wil- 
liamson. Also fossil; in San Pedro City bluffs. 
Drillia penicillata Cpr. 
Living shells seldom found; usually inhabited by crabs. A beauti- 
ful species with wavy hair lines across the whorls. 
Drillia torosa Cpr. var. 
Three shells, all broken. This variety is spotted. Point Fermin. 
(J. G. C.) 
Genus MANGILIA Risso. 
Mangilia striosa C. B. Ad. 
Rare; dead. The generic name is taken from an Italian conchologist 
who was called Mangili. 
Subgenus CyTHARA Schumacher. 
Mangilia (Cythara) variegata, Cpr. (Mangilia variegata Cpr., var. nitens, of West 
Coast lists). 
Three or four live examples. (W. H. D.) 
Genus MITROMORPHA Adams. 
Mitromorpha aspera Cpr. Pl. xrx, fig. 3. 
One. (C.T.S.) 
Mitromorpha filosa Cpr. Pl. XIX, fig. 1, 
One (young) broken. (C. T. 8.) 
Family CONID. 
Genus CONUS Linné, 
Conus californicus Hds. 
Plentiful in moss at Point Fermin. Washed ashore in the bay with 
live Crepidulie on them. 
Family PYRAMIDELLID. 
Genus PYRAMIDELLA Lam. 
Pyramidella conica Ads. var. wariegata Cpr, (Obeliscus). 
Three or four dead shells. (W. H. D.) 
