PHYSA.— Plate IV. 



The New Zealand Physa. Shell turbinated, solid, 

 chestnut, smooth ; spire conical, whorls roundly 

 angular; last whorl inversely conical, anteriorly 

 somewhat acuminated ; aperture rather golden ; 

 inner lip strong ; columellar fold a little gibbous 

 at the top. 



GuAY. MS. Brit. Mus. 



Hah. New Zealand. 



Species 30. (Mus. Brit.) 



Physa elongata. Phy. testd angustd, elongatu, pyra- 

 midatd, nitcnti, stramined vel subaured, leviter 

 strigatd ; spird aperturam longitudine paulo super- 

 anti, ultimo avfractu subovato; aperturd breviusculd, 

 intm pallida, labio intemo expanso, plied colvmellari 

 breviusculd, tenui, tortud. 



The elongated Physa. Shell angular, elongated, 

 pyramidal, shining, straw-coloured or slightly 

 golden, slightly streaked ; spire a little e.xceeding 

 aperture in length ; last whorl somewhat oval ; 

 aperture rather short, pale inside, inner lip ex- 

 panded, columellar fold rather short, thin, tortuous. 



Say. New York Acad. Nat. Sci., vol. ii. p. 171. 



Hah. North America? 



Species 31. (Mus. Brit.) 



Physa rivalis. Phy. testd pallide corned, semipellucidd, 

 Icevigatd, angustd, ovato-oblongd ; spird brevius- 

 culd, anfractibus convexis; ultimo anfractu elongate; 



apertura elongata, iiitils prope marginem castaneo 

 paliide fasciatd. 



The river Physa. Shell pale horn, semi-pellucid, 

 smooth, narrow, ovate-oblong ; spire rather short, 

 whorls convex ; last whorl elongated ; aperture 

 elongated, with a pale chestnut band near the 

 margin. 



Sowerdy. Genera of Shells, LimnEa, fig. 9. 



Hab. Columbia River. 



Species 32. (Mus. Brit.) 



Physa ji^sta. Pliy. testd injlatd, hrevi, obscure fiisro- 

 subviridi ; spird exsertd, acuminata, anfractibus 

 superne planulatis, angulatis, ad angulum plvs- 

 minusve subcarinatis ; aperturd latd,intils castaned; 

 plica columellari validd, elevatd, crassd. 



The sad Physa. Shell inflated, short, dull greenish- 

 brown ; spire exserted, acuminated, whorls above 

 flattened, angular, more or less keeled at the angle ; 

 aperture broad, chestnut within ; columellar fold 

 strong, raised, thick. 



II. Adams. Proc. Zool. Soc. 



Hab. New Zealand. 



This species has very close relations with Physa 

 tabulata of Gould. The chief difference consists in 

 the rounded angles of the whorls in the latter and the 

 distinct square angles in the former. These characters, 

 however, are somewhat varied, and some specimens in 

 each approach very nearly to each other. 



