PHYSA.— PI.ATK VII. 



Say's Piivsa. Shell ovate, much polislied, pale fulvous, 

 suffused with pink ; spire shortly conical, whorls 

 short; last whorl ovate; aperture semiovate, 

 oblong, anteriorly narrowed ; columella twisted 

 backwards. 



CxKAY. ■ ■ 1 Mus. Brit. 



Hab. Hudson's River, North America. 



Probably a comparison has been made between this 

 species and Plii/sa guriiia of Say. It is more obese and 

 less acuminated, and tapers slightly towards the anterior 

 termination. 



Species 53. (Mus. Brit.) 



Piivsa Algoensis. Phy. testd ovato-subglobosd, tenuis- 

 siiiid, pallide succined, hyalmd, translucidd, antice 

 suhattennatd ; sjnrd hrevi, anfractibus paiTis ; 

 ultimo anfractu inflato, hrevi, plica columcllari 

 hrevi. 



The Alcoa Piitsa. Shell ovately-subglobose, very 

 thin, pale amber, hyaline, translucid, anteriorly 

 slightly attenuated; spire short, whorls small; 

 last whorl inflated, short, columellar fold short. 



MORELET. ? 



Ilah. Damara Land, Algoa. 



Species 5-1. (Mus. Sowerby.) 



Phvsa Tongana. Phj. testd fusco-olivaced, Icevigatd, 

 fusij'ormi ; spird productd, eleganter acuminata ; 

 anfractihus oblique declivibus, subangiilatis ; ultimo 

 anfractu inflato, superne suhangnlato, infrd, sitb- 

 attemiato ; aperturd spiram loiigitiidiiie SKpernnti, 

 postice siibangulato, antice acuminato, coliiiiicUd fere 

 hiplicatd. 



The tonga Physa. Shell olive-brown, smooth, fusi- 

 form ; spire produced, elegantly acuminated ; 

 whorls obliquely sloped, somewhat angular ; last 



whorl inflated, slightly angular above, a little 

 attenuated below ; aperture longer than the spire, 

 posteriorly slightly angular, anteriorly acuminated, 

 columella nearly double- plaited. 



Quov. Voyage de I'Astrolabe, PL LVIIL, fig. 19, 20. 



Ilab. Australia. 



Species 5.5. (Fig. a, b, Mus. Sowerby.) 



Physa sindata. Phy. testd parvd, siibfiisiformi, fusco- 

 ferruyined ; spird j^roductd, acuminafd, anfractibus 

 jmrvis, gibhosis ; ultimo anfractu subovato ; aper- 

 turd intiis pallide purpured, lahio externo sinuato : 

 plied columcllari parvd, altd. 



The sinuated Physa. Shell small, subfusiform, ferru- 

 ginous-brown ; spire produced, acuminated; whorls 

 small, gibbous ; last whorl rather ovate ; aperture 

 pale purple within, outer lip sinuous ; columellar 

 fold small, raised. 



Gould. E.xpedition shells. 



Hah. New South Wales. 



Species 5G. (Mus. Brit.) 



Physa reticulata. Pliy. testa subpyramidatd, gracili, 

 fumoso-cornea, concentrice et spiraliter striata ; 

 spird elevatd, acuminata, anfractibus oblique de- 

 clivibus, prominentibus ; ultimo anfractu ohliqvo, 

 antice subinflato, postice subattenuato ; aperturd 

 suhpyramidata, intiis pallide aurco. 



The reticulated Physa. Shell rather pyramidal, 

 smooth, smoky-horn-coloured, concentrically and 

 spirally striated ; spire elevated, acuminated, 

 whorls obliquely sloped ; prominent ; last whorl 

 oblique, anteriorly slightly inflated, posteriorly 

 subattenuated ; aperture subpyramidal, pale 

 golden within. 



Gould. ? 



Ilab. Sandwich Islands. 



