from the West Coast of North America. 397 



tremate continuo, valde calloso ; labro sinuato. Long, "21, long. 

 spir. -J 3, lat. '09, div. 40°. 



Hab. Sta. Barbara, 1 specimen (Jewett). 



Preeminent for aberration among the distorted Eulimidse. 

 A second specimen occurred from an uncertain source. 



Opalia bullata. 



O. testa minore, alba, subdiaphana, turrita, gracili ; marginibus spirae 

 subrectis ; tota superficie minutissime et creberrime spiraliter 

 striolata ; vertice nucleoso dcclivi, celato ; dein anfr. ii., globosis, 

 radiatim haud sculptis ; dein v. normalibus, planatis, suturis vix 

 impressis ; lirulis radiantibus circ. xxvi., baud nisi in anfr. primis 

 expressis, circa basim irregulariter rotundatam ad axim continuis ; 

 serie bullularum suturalium anfr. primis e lirulis extantibus for- 

 mata, postea lirulis haud convenientibus, anfr. penult, circ. xvii., 

 planatis, super suturas parieti appressis, interstitiis haud infossis ; 

 basi subangulata, haud costata ; apertura subovali, sinistrorsum 

 subplanata ; peritremate continuo, calloso ; labro haud sinuato. 

 Long. -3, long. spir. *21, lat. -09, div. 20°. 



Hab. Sta. Barbara, one specimen (Jewett). 



422. Cerithiopsis purpurea. 



C. testa compacta, haud gracili, marginibus spirae parum excurvatis ; 

 purpurea seu fusco-purpurea, circa peripheriam pallidiore ; anfr. 

 nucl. ? ii., laevibus ; norm, vii., planatis, suturis impressis ; serie- 

 bus iii. nodulorum minorum supra costulas spirales minores, ad 

 intersectiones costularum radiantium circ. xxiii., lineis fere rectis, 

 ad suturas interruptis, spiram ascendentium sitis ; interstitiis im- 

 pressis, quadratis ; costulis suturalibus ii. haud nodulosis ; basi 

 rotundata, antice lirulis paucis expressis inter eas et costulas su- 

 turales vix sculpta ; apertura subquadrata ; columella torta, emar- 

 ginata. Long. *29, long. spir. '19, lat. '1, div. 20°. 

 Hab. Sta. Barbara (Jewett); Monterey, San Diego (Cooper). 



423. Cerithiopsis fortior. 



C. testa C. purpurece simili, sed sculptura multo fortiore, basi pallida ; 

 seriebus nodulorum spiralibus testa adolescente ii., postea iii. ; costis 

 radiantibus circ. xiii., interstitiis magnis ; costis suturalibus validis, 

 subnodosis; costabasali valida. Long. *3, long. spir. *2, lat. *11, 

 div. 26°. 

 Hab. Sta. Barbara, 1 specimen (Jewett). 



439. Marginella subtrigona. 



M. testa M. Jewettii simili, sed multo curtiore, latiore ; antice valde 

 angustata, postice valde tumente ; labro postice minus prolongato ; 

 plicis iv., validioribus, parietali una. Long. '14, long. spir. •01, 

 lat. -11, div. 130°. 

 Hab. Sta. Barbara (Jewett). 



