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RissolNA GERTRUDis. U.S. li.t. miiiuta, tarrita, siohulata, suh- 

 pijrainidalis,lactea, translucenti, tenui ; anfrac. 8, convexiuscalis, cre- 

 berrime plicatls, plicis parvis, rotundatis subobsoletis ; nit. anfrac. 

 basim versus spiraliter subtUlissime striato ; sutura late nnarrjinata ; 

 apertura semilunari ; labro medio dilatato et incrassato ; labia con- 

 spicioo, fltxuoso, antice rimato. Long. 4j. Lat. Ij. 



P. shell minute, turrettedly subulate, sub-pyramidal, milky- 

 white, translucent, thin ; whorls 8, somewhat couvex, very 

 thickly plicate with small rounded subobsolete plaits ; last 

 whorl most delicately spirally striate towards the base ; suture 

 broadly margined ; aperture semilunar ; outer lip dilate in the 

 middle and thickened ; inner lip conspicuous, flexuous, rimate 

 anteriorly. 



King's Island, rare. I have only seen two specimens of 

 this very minute shell, which is near to H. nivea, A. Adams, 

 but smaller, and the sutures marginate. 



RissoiNA (setia) brazieri. n.s. B.t. minuta, turbinato-con- 

 oidea, subumbilicata, alba, late fulvo uuifasciata ; anfractibus 5, 

 rotundatis, kevigatis, ultimo adperipheriam aiujulato; apertura rotun- 

 data, superne angulata ; peristoma integra. Operculum corneii,m 3- 

 spir. Long. 3, Lat. 2. Testa aliquando epiderm,ide intense olivaceo 

 induta. 



R. shell, minute, turbinately conoid, subumbilicate, white, 

 with one broad fulvous band ; whorls 5, rounded, smooth, 

 last angulate at the periphery, aperture rounded, angular 

 above ; peristome entire. Operculum horny, 3 spiral. This 

 shell is sometimes clothed with a deep olive epidermis. 



Isthmus Bay, Eruni Island, where it is very plentiful, en- 

 tangled in confervoid growths on the rocks. 



CiNGXJLiNA AUSTRALis. n.s. C.t. minuta, subulata, turrita, tenici, 

 nitente, diaphaneo-alba, anfractibus 7, carinis elevatis, rotundatis, 

 spiralibus instructis, i7iterstitiis Icevibus ; carinis in ultim,. anfrac. 5, 

 deinde Jf, 3, etc. ; sutura profunde impressa ; apertura obloiiga, in- 

 tegra ; labro crassiusculo ; basi convexo, liris spiralibus (2) elevatis, 

 rotundatis, ornato. Long. 2. Lat. f . 



C shell minute, subulate, turretted, thin, shining, trans- 

 parently white, whorls 7, furnished with elevated rounded 

 spiral keels, with smooth interstices ; keel in the last whorl 5, 

 then 4, 3 &c.; suture deeply impressed; aperture oblong, entire ; 

 outer lip somewhat thickened; base convex, ornamented with 

 two spiral rounded elevated liree. 



Badger Island, rare. An extremely minute turretted white 

 shell, with elevated spiral keels, &c. 



DtJNKERiA FASCiATA. n.s. D.t. miuuta, turrita,utrinqi.ie clatlwata, 

 translucente,pallide lutea fasciata ; anfractibus 6, convexis, bicarinatis, 

 liris paucis, elevatis, nitentibus spiralibus, tra7isversalibus ptdcherrime 

 cancellatis ; labio simplici columella arcuata. Long. 3j-4. Lat. 2. 



D. shell minute, turretted, latticed all over, translucent and 



