PIIYSA.— Plate XII. 



Species 97. (Mus. Sowerby.) 

 Phtsa dullata. Phy. testa majusculd, tenuissimd^ 

 fusco-corned, distaiitcr Jusco fasciatd, ovato-inflatA ; 

 rugis tenuihus longitudinalibus leviter undulatd ; 

 spird hreui, anfractihus apicalihus minutis, penul- 

 tino brevi, injlato; ultimo injlato, superne gihhoso, 

 antice suhaltemiato ; apertiird elongatd, stilmiri- 

 formi; columelld tortud, plica tenui, prominenti. 

 The bubule Physa. Sliell rather large, rather thin, 

 horny-brown, distantly banded with brown ; ovate- 

 inflated, lightly undulated with fine longitudinal 

 wrinkles ; spire short, apical whorls minute, 

 penultimate inflated, last inflated, gibbous above, 

 rather attenuated anteriorly ; aperture elongated, 

 somewhat auriform ; columella tortuous, fold thin, 

 prominent. 



SOWERBT. 



Hah. South Aitstralia. 



Physa castanca is a much more solid and angular 

 shell than tins. 



Species 98. (Fig. a, h, Mus. Legrand.) 

 Physa nitida. Phy. teftd parvd, subfusiforrrd, pallide 

 fulvd, Iwvigatd, ohliqud; spird breviusculd, an- 

 fractihus apicalihus acuminatis, parvis, penullimo 

 injlato ; idtimo anfractu ovato, tumidiusculo, antice 

 rotunda ; aperturd ovatd, columelld tortud, plied 

 inconspicud. 

 The neat Physa. Shell snjall, subfusiform, pale 

 fulvous, smooth, obli(]ue ; sjjire rather short, apical 

 whorls acuminated, small, the penultimate inflated; 

 last whorl ovate, rather tumid, anteriorly rounded ; 

 aperture ovate, columella tortuous, plait incon- 

 spicuous. 



Sowerby. 



Hah. In creeks of South-east Tasmania. 



Species 99. (Fig. a, h, Mus. Legrand.) 



Physa Brunniknsis. Phy. testd parvd, ohlongd, 

 anr/ustd, pellucidd., nitenti ; spird hreviiisciild, an- 

 fractihus tribus, distinciis, prope suturam gihbosis^ 

 ultimo oblongo ; aperturd angusliusculd, columelld 

 tenuissimd, plica inconspicud. 



The Brdnni Island Physa. Shell small, oblong, 

 narrow, pellucid shining; spire rather short, 

 whorls three, distinct, gibbous near the suture, 

 the last oblong ; aperture rather narrow, columella 

 very thin, plait inconspicuous. 



Sowerby. 



Hah. Brunni Island, Australia. 



I am not aware of this pretty little species having 



been named before. 



Species 100. (Mus. Sowerby.) 



Physa duplicata. Phy. testa solidd, caslaned, hreviiis- 

 culd ; spird acuminata, anfractibus ohliquis, 

 declivihus, ultimo injlato, breviilsculo ; aperturd 

 suhovatd, (juamspird longiori; lahio externa sinuato; 

 columelld rectiuseuld, incrassatd, plied duplicata. 



The double-plaited Physa. Shell solid, chestnut, 

 rather short ; spire acuminated, whorls oblique, 

 slojjed, the last inflated, rather short ; aperture 

 subovate, longer than the spire; outer hp sinuated ; 

 columella rather straight, thickened, with a double 

 plait. 



SowEniiY. 



Hah. Wide Bay, Australia. 



