56 



natis concinne clathratis, ad apicem violacea : spira anfr. 6 con- 

 vexis : apertura circularis ; columella recta rotundata ; labro 

 crenulato: regio umbilicalis vix indentata. Alt. f, lat. § poll. 

 Hab. Puget Sound. 



This shell resembles, in most respects, T. doliarius ; small 

 specimens are like Margarita cinerea, Couth. 



Trochus pupillus. Testa parva, elevato-conica, margaritacea 

 extrinsecus incana, filis virido-fuscis ubique cincta, ad interval- 

 los minutissime clathrata: spira anfr. 6 convexis : basis planius- 

 cula, fissura umbilicali perforata : apertura circularis ; columella 

 arcuata : faux fulgida, minutissime punctata. Lat. £, alt. T 3 g- poll. 

 Hab. New Zealand. 



Somewhat similar to T. ligatus, but much smaller, more del- 

 icate, more nacreous within, and partially umbilicated. It is still 

 more like Margarita cinerea, but is more solid, and more del- 

 icately marked. 



Trochus jucundus. Testa parva, solida, conica, flammulis 

 radiantibus invicem coccineis incarnatis et albis picta : spira 

 anfr. 6 sub-angulatis, filis granulosis alternis minoribus cinctis : 

 basis convexiuscula, imperforata, liris concentricis linearibus 

 articulatim pictis insculpta ; regione umbilicali indentata : aper- 

 tura rhomboidea ; columella arcuata, laevi ; labro simplici. Long, f , 

 alt. f poll. Hab. New Zealand. 



A very beautiful shell, both in color and sculpture, quite dis- 

 tinct from any described species. 



Trochus gradatus. Testa parva, solida, perforata, ovato- 

 conica, turrita, cinerea ferrugineo-fiammulata : spira anfr. 5, 

 declivibus, ultimo carinis duabus biangulato quorum suprema 

 secundum spiram volvat ; interspatio trilineato et concinne cla- 

 thrato : basis convexiuscula, liris granulatis concentricis ad 8 

 insculpta; umbilico amplo, infundibuliformi : apertura circularis ; 

 columella tenui, recta, antice dentifera. Alt. f, diam. § poll. 

 Hab. Pacific Islands. 



In most respects it is like T. eximius, Reeve, which, however, 

 is imperforate. It is also somewhat like T. sulcatus, Wood's 

 Sup. 



