4 Dr. P. P. Carpenter en neiv Forms of Mollusca 



radiatiin vix ornata ; epiLlcniiide loevi, teniii, fugaci ; costa pulmo- 

 nali intus et extus valde consplcua, tuinente ; vertice obtuso, 

 pleruinque ad quadrantem, interdum ad trientein totins longitu- 

 diiiis sito ; intus intense nigro-fusco, margine acuto. Long. '46, 

 lat. -33, alt. -l/. 

 Hah. Neeah Bay {Swan). 



This genus, which culminates in western tropical America and 

 at Cape Horn, is not known in California. The Vancouver spe- 

 cies resembles <S. lateralis and its congeners, but difi'ers m having 

 an enormous lung-rib and no colour-rays. 



16, Mopalia {Kennerleyi, var.) Siuannii. 



M. testa M. Kennerleyi typiciie simili, sed jugo fornicate, liaud cari- 

 uato ; omnino rubida, scul[)tura multo minus expressa ; areis late- 

 ralibus vix definitis ; latera versus subgranulata ; dorsum versus 

 lineis jugum versus procedentibus, interstitiis punctatis ; sinu 

 postico latiore ; limbo pallii lato, coriaceo, vix piluloso. Long. 

 2-4, lat. 1-, div. 120°. 



Hab. Tatooche Island {Swan). 



23. Margarita Cidaris, A. Ad. 



M. testa magna, conica, Turcicoidca, tenui ; albido-cinerea, nacreo- 

 argentato ; anfr. nuclcosis?...(decoIlatis), norm, vii., subplanatis ; 

 suturis alte inscvilptis ; superficie spirse tota valide tuberculosa, 

 seriebus tribus, alteris postea intercalantibus ; peripheria et basi 

 Totundatis, carinatis ; carinis circ. viii., havid acutis, irregularibus, 

 scabris, haud tuberculosis ; lacuna umbilicali vix conspicua ; aper- 

 tura subrotundata ; labro tenuissimo ; labio obsolete ; columella 

 arcuata. Long. I'l, long. spir. •65, lat. '7o, div. 00°. 



Hab. Neeah Bay {Swan). 



Mr. A. Adams suggested the above expressive name for this 

 very remarkable and unique shell. 



25. Gibbula parcipicta. 



G. testa solidiore, parva, conica, pallida, purpureo-fusco varie nebu- 

 losa et maculata ; anfr. v., rotundatis ; carinis ii. validis in spira 

 se monstrantibus, minore intercalante ; interstitiis subsuturalibus, 

 sublsevibus, inter carinas obtuse decussatis ; lira peripherica de- 

 fmita, ssepe in spira se monstrante ; basi valde rotundata ; lirulis 

 basalibus circ. v. rotundatis, subdistantibus ; apertnra suboirculari; 

 columella arcuata ; umbilico majore, infundibuliformi, haud angu- 

 lato. Long. '14, long. spir. '07, lat. •13, div. 70°. 



Hab. Neeah Bay {Swan); Santa Crux {Ruivell). 



26. Gibbula succinda. 



G. testa parva, subelevata, solidiore; livida, testa jun. strigis angustis, 

 creberrimis, fusco-purpnreis penicillata, testa adulta maculis quo- 

 que magnis nebulosa ; aufi-. v., subquadratis; liris obtusis mediauis 



238 



