Testaceous Pneumonobranchous MqHusco of Great Britain." 507 



those of an oolite formation, perhaps on account of the quantity 

 of lime which is necessary for the secretion of its shell and win- 

 ter epiphragm. 



H. fusca, p. 330. 



Common in moist woods of the North of Devon. It fre- 

 quently exceeds the size mentioned in the former part of my 

 Synopsis. 



H. trochiformis, p. 331. 



In the same situations as the last, Wiltshire and Devonshire. 

 Rathgael House, County Down, Ireland (^Mr. Cleland) ; Eton, 

 and Tenby ; Rev. Dr. Goodall. 



H. Mortoni, p. 332. 

 Box, near Bath, rare. 



H. kculeata, p. 332. 



In moist woods of Devon and Wiltshire 



H. lamellata, p. 333. 



"Animal pale grey," Mr. Alder; who very obligingly furnished 

 me with specimens of this and other rare species of the North 

 of England. 



H. sericea, p. 333, lege globularis, Jeffreys. 



Animal albidum, anteriils griseum. Sustentaculum bre- 

 vius crassum. 



Abundantly in the South of Devon: also at Tenby {Kev. Dr. 

 Goodall) ; and Salisbury. Neighbourhood of Dublin : Appen- 

 dix to Welsh and Whitelaw's Hist, of Dublin. 



The H. sericea of Draparnaud is a very different species from 

 this. The name of grantdata, given to the present by Dr. Tur- 

 ton and adopted by Mr. Alder, is objectionable, as indicating 

 an imperfect appearance of the specimens ; but I rather doubt 

 its being distinct from the H. hispida. It is not uncommon in 



many 



