312 Mr. E. A. Smith on 



Pleurotoma [Mangilia) decipiens. 



Testa oblongo-ovata, alba ; anfractus 7, primi 3 Iseves, politi, con- 

 vexi, cajteri leviter convexiusculi, costis 8-9 (in anfr. ultimo fere 

 ad basim continuis) instructi, et spiraliter crebre fortiterque, pne- 

 cipue inter costas, striati ; apertura parva, longit. totius | panlo 

 minor ; labrnm costa ultima incrassatum, superne valde semicir- 

 culariter sinuatum ; canalis brevissimus, truncatus. 



Long. 6 mill., diam. 2. 



Hal. ? 



This species has no very marked distinctive character. 

 The spiral striations are generally rather coarse, but some are 

 finer than the others, and the ribs on the body-wliorl become 

 more remote from each other as they approach the labrum. 



Pleurotoma {Mangilia) Lischhei. 



Testa ovato-fusiformis, turrita, sordide albida, lineis tribus rufis 

 obscuris ornata ; anfractus 6, supremi tres perconvexi fere Iseves, 

 cseteri medio subangulati, costis tenuibus circiter 12 instructi, et 

 lira unica obsoleta circa angulum cincti, ubique spiraliter obsolete 

 striati ; anfr. ultimus costis paululum ante basim liris spiraliter 

 8-10 circa caudam interruptis ; apertura longit. totius ^ ad- 

 eequans ; labrum estus incrassatum, superne leviter sinuatum ; 

 canalis angustus, brevis. 



Long. 6^ miU., diam. 2|. 



Hah. Japan. 



The third whorl is seen to be finely, longitudinally, arcu- 

 ately lirated in some specimens, and the spiral striation is very 

 faintly developed. In the specimens before me, which are 

 not in good condition, the spiral reddish lines, of which there 

 appear to be three on the body-whorl, are very indistinct. 



Pleurotoma {Mangilia) castellata. 



Testa oblonga, turrita, alba ; anfract. 6-7, primi 2 Iseves, convexi, 

 cseteri tabulati et angulati, ad latera plani, interne versus sutu- 

 ram angustati, costis pliciformibus tenuibus, valde prominentibus, 

 Buperne ad suturam subrotunde angulatis (in anfr. penult. 8, in 

 ultimo 7 basi continuis) instructi, ubique dense minuteque spirali- 

 ter striati ; apertura angusta, longit. totius | fere sequans ; labrum 

 costa ultima fortiter incrassatum, superne semicirculariter sinua- 

 tum ; canalis brevis, angustus, truncatus. 



Long. 6| mill., diam. 2|. 



Hab. ? 



This is a very elegantly formed shell. The whorls are 



