Mollusca of Great Britain. 331 



Testa subglobosa, subdiaphana, fragilissima, luteo-fusca. 



Anfractus vix 5. Apertura lunata : peristomio sim- 



plici. 



Long. 0.225.~Diam. 0.3. 



Helix fusca. Mont. Test. Brit. p. 424. t. 13. /. 1. 



From woods in the neighbourhood of Swansea and 

 Cardiff. Mr. J. S. Miller of Bristol, who has described 

 this shell in the Annals of Philosophy as a new species 

 (H. siihrufescens), says he has not unfrequently found it in 

 Somersetshire ; but it is at least a local species. 



Trochiformis. 



Animal fusco-griseum, nitidissimum. Sustentaculum per- 



angustura tenue. Tentacula perlonga, valdfe flexilia. 

 Testa supern^ conica, globosa ; subtds planiuscula ; niti- 



dissima, glabra, corneo-fulva. Anfractus 6. Apertura 



lunata, compressa. 



Long. 0.1 fer^. — Diam.0.1. 



Helix trochiformis. Mont. Test. Brit. p. 427. 1. 11. f. 9. 



fulva. Brap. Hist, des Moll. p.Q\. t.7.f.l2. 



a. subfusca, diaphana. 



Not uncommon under stones at the bank of an old canal 

 on Crymlin Burrows ; and on the waterflag, and under de- 

 caying wood, in marshy ground, at Marino near Swansea. 

 The \^ar. a. is from Somersetshire. 



To this species may perhaps be referred the Trochus ter- 

 restris of Pennant, said to have been found by Mr. Hudson 

 on the mountains of Cumberland ; though the figure of that 

 author (which hardly agrees with the description) repre- 

 sents quite a different shell. The Helix fulva of Mliller is 

 quite distinct, and is probably the H. edentula of Drapar- 

 naud. 



8. MORTONI. 



