p n Y S A. 



Species 40. (Mus. Brit.) 



Physa Reevii. rill/. ti.<ta liirbinaM, tenuiusculd, ob- 

 scure J)i,<fi>-!<idiciiidi ; ."jiird truncatd, planidatu, 

 anfractibvs carinatig ; ultimo anfraclu inverse 

 conico, antici subacuminato ; aperturd postirr 

 anrjulatd, antice retrorsiin subarciiatd ; plied colii- 

 mellari relrorsim tortuosd. 



Reeve's Piiys.v. Shell turbinatcJ, ratlicr tliiii, ilull 

 greenish-brown; spire truncaUnl, llalk'neil, wliorls 

 carinated ; last whorl inversely conical, anteriorly 

 a little acuminated ; aperture jio.'itoriorly angular, 

 anteriorly a little arched, culumellar l'i>ld twi>ted a 

 little backwards. 



Adams and Axi;.\s. Proc. Zool. Soc, 1^03, p. 417. 



JJab. \orth Australia. 



Species 41. (Mus. Rrit.) 



PnYS.\ nDMEROS.\. Pbi/. tcalA brevitcr subii/linrlrird, 

 pallida, crasfd ; spird breriiisctild, aruminatd ; 

 anfrai-tii ii/finm .itipirni /in^pi' stltnram gibbasd, sub- 

 aiKjnlafii. hit, rihiis r, liiil-rulis ; uperlurd sciiiioratd ; 

 Col'Uiiirlld rnis.<d, r/.r iinuiitd, vix plicatd. 



The siioulderkd Phys.\. Shell shortly subcylindrical, 

 pale, thick ; spire rather short, acuminated ; last 

 whorl gibbons and somewhat angular above, near 

 the suture, with straight sides ; aperture semi- 

 ovate ; columella thick, scarcely arched, scarcely 

 plicated. 



Gould. .' 



Hah. New ;\Iexico. 



ipeci 



(Mus. Hrit.) 



Physa semigloi!os.\. PIi>/. testd ijloboso->:iihiiviiid, <■(» 

 mibviridi, niteiiti, tenuiss-iiitd, pcUnciih't : sjiini In 

 simd, aperturd mafjnd, .•ivborald, ultimo iinj] 

 inflato ; plied oAiuneltari tcoii, arruatim tortn 



F. 



Tue SEMir.LOBOSE Pin-s.-i. Shell globo.se, subovate, 

 greenish-horn, shining, very thin, pellucid ; spire 

 very short, aperture large, subovate, last whorl 

 inllated; colunieliar fold thin, twLsted archwise. 



Westerland. MoUusques terrestres et d'eau dunces, 

 p. 20. 



Ilab. Sweden. 



Species 43. (Pig. a, b, <■, Mus. Brit.) 



I'HYS.\ PROTEUS. Pliy. testd solidd, fiisiformi, lo'virjatd, 

 pallid!: fulvd ant cinered, fasciis castanets vel 

 ulbido-subaureis longitudinaiibus variegatd ; spi7-d 

 elojif/atd vel brevi-dsculd, anfractibus convexif, 

 jwnnunquam suhangulatis, aperturd semiovatd, 

 inths purpurasceriti ; plied columellari crassd, 

 tortud. 



The PROTEUS Physa. Shell solid, fusiform, smooth, 

 pale-fulvous or cinereous, varied with chestnut or 

 yellowish-white longitudinal bauds; spire elongated 

 or rather short, whorls convex, sometimes a little 

 angular; ai>ertiu-e semi-ovate, purplish withiu ; 

 columellar plait thick, tortuous. 



Sow ERE Y. 



Huh. West Australia. 



There is quite a gradation from the elegantly fusiform 

 to the stuuted angular character. 



Species 44. (Mus. Brit.) 



Physa Cumingii. Phy. testd subinflatd, inverse eonicd, 

 fusco-fernigined ; spird brevissimd, planulatd, an- 

 fraclu ultimo maxima, postice obtuse subangulato, 

 tvmido, antice paulo attenuate ; aperturd elongatd, 

 lahio externa simiato, lahio interno crasso, lata, 

 plied columellari tortud, validd. 



CuMiNii's Physa. Shell a little inflated, inversely 

 conical, ferruginous brown ; spire very short, 



, 1873. 



