71620 Species of MuJlusca. 165 



sinuatura ; columella rectiuscula, tenuiter callosa ; canalis brevis, 

 latus. 

 Long. 13, maj. diam, 5 mm. 



Hah. Naoasaki. 



This species is chiefly cliaracterized by a few smooth 

 oblique plicce on the whorls o£ the spire. 



Columhella pUcatosjnra, sp. ii. (PI. X. fig. 2.) 



Testa subc3-liiidracea, polita, pallida lutescens, juxta suturam fascia 

 iiiterrupta rufo-fusca oruata ; spira elata, couvexiuscula ; an- 

 fractus 0, leviter convexi, baud angulati, plicis numerosis Iseves 

 crassiusciili, interstitiis panlo augustioribus, longitudinaliter 

 instnicti, sutura angustissima sejuncti ; anfractus iiltimus 

 oblongus, supra leviter couvexus, infra medium contractus, infra 

 suturam breviter sed eonspicue plicatus, aliter Iceris. Apertura 

 elongata, mediocriter lata ; labrum incrassatum, intus quinque- 

 dentatum ; columella rectiuscula tenuissime lamellata. 



Long. 10, maj. diam. 3| mm. 



Hah. Japan. 



This shell is chiefly characterized by the stout straioht 

 plicfB on the whorls of the spire and the few short ones, 

 rendered conspicuous by the briglit brown interrupted baud, 

 and forming a sort of crown to the body-svhorl. 



Olivella inusta, sp. n. (PI. X. fig. 6.) 



Testa parva, rimata, oblonga, solidula, nitida, pallide fusco-luteola, 

 saturate fusco late balteata ; spira acuta ; anfractus 5, levissime 

 convexi, sutura augustissime canaliculata sejuncti ; anfractus 

 ultimus subcylindricus | longitudinis testae vix sequans, infra 

 lira angusta obliqua instructus, supra et infra nitide fusco late 

 balteatus. Apertura anguste trigona ; labrum vix incrassatum ; 

 columella albo callosa, sinistrorsum obliqua. 



Long. 3|, maj. diam. 2 mm. 



Ilab. Florida. 



Chiefly recognized by the two broad shining bands and the 

 cylindrical form of the body-whorl. 



Lotorium [Cymatiiuii) k'densis, sp. n. (PI. X. tig. 7.) 



Testa subfusiformis, autice rostrata, postice pyramidalis, iri'egulariter 

 varicosa et longitudinaliter plicata, liris angustis transversis paulo 

 elevatis, creberrime granulosis sculpta, epidermide tenuis partim 

 scabrosa induta ; spira elata, conoidalis ; anfractus 6, primi 

 rotundati, reliquiae obtuse angulati ; anfractus ultimus elongato- 

 pyriformis, latcribus crassivaricosis, plicis paucis distantibus 



