Mollusca of Great Britain. 365 



published in 1784,) several specimens have occurred to me, 

 and one of the reversed distortion, among the rejectamenta 

 of the Avon river near Bristol. It is, as Ferussac, who has 

 given a detailed description of the animal, very justly ob- 

 serves, quite an anomaly in the genus. 



** Aperturd marginatd, dentibus seu lamellis subcontinuis 

 instructd : peristomio incrassato. 



2. Minimum. 



Animal albido-flavescens, pellucidum. Sustentaculum tenue, 

 dilatatum. 



Testa ovato-subclavata, acuminata, nitida, pellucida, albida, 

 (sub lente) argute et transversim striata. Anfractus 5, 

 subtruncati. Apertura ovalis, lamellis 3, scilicet 1 colu- 

 mellari et 2 labralibus munita : peristomio subreflexo. 

 Umbilicus vix ullus. 



Long. 0.07.— Diam. 0.045. 



Carychium minimum. Mull. Verm. 2. p. 125. 



Turbo carychium. Mont. Test. Brit. p. 339. t. 22./. 2. 



Maton Sj- Rackett in Linn. Trans. 8. p. 184. Dillw. 



Cat. 2. p. 880. 

 Auricula minima. Drap. Hist, des Moll. p. 57. t. 3. 

 f. 18, i9. 



Common at the roots of grass, &c. in moist places. 



3. POLITUM. 



Animal 



Testa clavata, subfusiformis, glabra, nitida, dilute fusca. 

 Anfractus 7, suturd vix conspicuA, marginati. Aper- 

 tura subcordata, sinuata, lamellis 5, nemp^ 2 inaequa- 



libus 



