new Species o/Pleurotoiiiida}. 321 



Hab. New Zealand [Dr. Sinclair). 



The proportion of the aperture to tlie length of the shell 

 appears to vary. In two of the specimens from New Zealand 

 it occupies almost half the entire length. The reddish bands 

 are most conspicuous on the body-whorl. 



Pleurotoma {Manf/ilia?) albolabiata. 



Testa subquadrato-ovata, turrita, pallide lutea, juxta sed infra sutu- 

 ram saturate fusco tincta, et circa aufr. ultimi medium zona 

 angusta ejusdem coloris ciucta ; anfract. (3, primi 2 politi, heves, 

 convexi, tertius striis longitudinalibus et spiralibus uuinerosis 

 (granulis ita productis) insculptus, carter! superue breviter deelivi- 

 terque tabulati et angulati, infra angulum plani, costis subvalidis 

 11 (in aiifr. ultimo fere ad basim contiuuis) instructi, et liris 

 spiralibus 3-4 (in anfr. ult. circiter 16) et striis minute granosis 

 inter illas ornati ; apertura angusta, Ion git. totius | sequans ; 

 labrum album, incrassatum, superne satis sinuatum, et infra 

 siuum intus unidentatum ; canalis brevis, angustus ; cauda alba. 



Long. 5 mill., diam. 2. 



Hah. Persian Gulf {Col. Pelly). 



Of the spiral lirations, that which is situated on the angle 

 of the whorls is rather stouter than the rest, and is a little 

 iioduled on crossing the libs. The brown band on the body- 

 whorl is more decided towards the labrum, and in some speci- 

 mens it is only visible on that part of the whorl. 



Pleurotoma {Mangilia ?) scifula. 



Testa elongata, subpyramidalis, pallide lutescens, inter costas 2)rope 

 Buturam et versus basim anf. ultimi pallido violaceo obscure 

 tincta : anfractus 8, primi duo ]*vcs, vitrei, tertius minute gra- 

 nose reticulatus, ca'teri convexiusculi, costis validis 6 supra spiram 

 continuis adque basim. anfr. ultimi contiuuis instructi, et liris 

 spiralibus 3-4 (in anfr, ult. circiter 13) supra costas leviter iucras- 

 satis et promincntibus ornati, et inter liras minutissime denseque 

 spiralitor puncto-striuti ; apertura parva, longit, totius ^ paulo 

 superans ; columella fuscescens, liris transversis parvis2-3munita ; 

 labrum extus costa ultima incrassatum, supra marginem fusces- 

 cens, intus denticulis 4-5, supremo maximo, ornatum, aliquanto 

 infra suturam leviter sinuatum ; canalis angustus, brevis. 



Long. 7 mill., diam. 2. 



Hab. Persian Gulf {Col. Pelly). 



This species has a hexagonal aspect when viewed with the 

 apex turned towards the eye, owing to the six ribs being con- 

 tinuous up the spire. The very beautiful spiral minutely 

 punctate strige are only visible by the aid of a very powerful 

 lens, and the teeth, both on the columella and within the lips, 

 are but faintly developed. 



