91 



Trochijs ligattjs. Testa solida, ovato-conica, imperforata, 

 costulis rotundatis flavescentibus ubique cincta, intervallis incar- 

 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. 

 Hah. Puget Sound. 



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

 specimens are like Margarita cinerea, Couth, 



Trochus pdpillus. 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; columellal 

 arcuala : faux fulgida, minutissime punctata. Lat. ^, alt. y^^j poll. 

 Hah. 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, flammulls 

 radianlibus 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. Hah. 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-flammulata : 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 ample, infundibuliformi : apertura circularis ; 

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

 Hah. Pacific Islands. 



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

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

 Sup. 



