74 



angular form is unusual in tlie genus, but tluit tLis only ap- 

 pears strongly in mature specimens. 



7. Physa huonensis, qi. s. p. testa, parva ovato-fusiformi, 

 pellucida, nitente cornea ; spira suhproducta ; anfr. (5), apicalibus 

 acuminatis, parvis, jnnultimo longmsculo ; apertwra prodtvcta, auri- 

 forinis ; columella tenui, arcuata, plica vix viaihilis. 



P. shell small, ovately fusiform, pellucid, shining, horny ; 

 spire sub-produced ; whorls (5) the spiral acuminated, small, 

 penultimate somewhat long, aperture produced, aurifoi-m ; 

 columella thin, arched, fold scarcely visible. Long. 8, Lat. 3. 

 Aperture, 4 mill. 



This shell is very distinct from P. hruniensis being larger 

 and having the aperture regularly produced, but it has much 

 the same habit. 



Habitat, Huon River, near Victoria. Legrand. 



8. Physa.. legrandi. n.s. P. testa fusiformi, acuminata, tenuiter 

 striata, suhpeUucida, pallide fulva, in partihus fusca ; spira producta, 

 attenuata, apice acuminata ; mifrac (6) ohliquis, attenuatis ; ultimo 

 anfractu ohlongo ; apcrtura producta, auriformis, columella arcuata, 

 plica conspicua. 



P. shell fusiform, acuminated, finely striated ; sub-pellucid, 

 pale brown, dusky in parts ; spire produced, attenuated ; apex 

 acuminated, whorls 6, oblique, attenuated, last oblong ; aper- 

 ture produced, auriform, columella arched, plait conspicuous. 

 Length 15, breadth 7 mill. 



This shell, which may be a large variety of the next species, 

 has the acuminate oblique habit, which may be said, to be the 

 typical form of so many Australian and Tasmanian species. 



Habitat, creeks Cambridge, near Richmond, Tasmania. 



0. Physa TASMANiCA, n.s., P. testa ovata, tcnui, nitenti, pellucida ^ 

 pallide fulva, rufa, fusco-suhviridi, olivacca vel fusco-cornea, pallide 

 lutea et subalha : spira hren, acuminata ; anfractihus (5) declivis ; 

 apertura ohliqua ; columello alba, teuui, coutorta, plica sxdjconspicua ; 

 labio interno tenuissimo, recurvo, ciom columella continuo. 



P. shell ovate, thin, shining, pellucid, pale fulvous, or red- 

 dish or brownish green, or olive, or horny brown, occasionally 

 pale yellow and almost white; spire short, acuminated; whorls, 

 five, sloping ; aperture oblique ; columella white, thin, twisted, 

 l)laits rather conspicuous ; inner lip very thin, recurved, and 

 continuous with the columella. Length from 8 to 13 mill., 

 breadth from 4| to 7| mill. 



This shell which appears to have escaped the notice of pre- 

 vious naturalists is the common Physa of the country, and is 

 found in all the inland streams. It is, however, so closely 

 riUied to the I'hysa fontiiialis which is diffused over Great 

 Britaiu and Europe that wo may well doubt if it be distinct. 

 If not, has it been introduced ':* It is very hard to suppose 



