PIIYSA.— Plate XL 



medianis disttnctiis, versus suluram tumidis, api- 

 calibus parvis ; ultimo anfractu inflato, superne 

 subgibhoso, antice attenuato, acuminato ; columella 

 tenutssmd, plied conspicud, elevatd. 

 The punctured Phtsa. Shell very thin, olive-brown, 

 obliquely subovate, very finely punctured in strife; 

 spire produced, acuminated, middle whorls distinct, 

 tumid towards the suture, those of the apex small; 

 last whorl inflated, rather gibbous above, at- 

 tenuated in front, acuminated ; columella very 

 thin, plait conspiciious, elevated. 



ScrWERBY. 



Hab. Australia. 



Species 92. (Pig. a, b, Mus. Brit.) 

 Physa contorta. Phy. testa parvd, corned, bred, 

 inflatd ; spird brevi, acuminata, anfractibus panels, 

 distinctis ; ultimo anfractu brevi, lata, subcylin- 

 drico ; apertura angustd, rectiHsculd, plica colmnel- 

 lari incoiispicud. 

 The contorted Physa. Shell small, horny, short, in- 

 flated ; spire short, acuminated, whorls few, 

 distinct ; last whorl short, broad, somewhat cylin- 

 drical; aperture narrow, rather straight, colu- 

 mella fold inconspicuous. 



MlCHAUD ? 



Hab. Cape of Good Hope. 



