140 



with the Kennet, by which we are enabled to add to the de- 

 fcription of the animal, having kept feveral in aglafs of water 

 for a confiderable time. 



It is large in proportion to its fliell like many of th-e 

 Bulla tribe, and niiglit with as much propriety be placed in 

 that genus as many others. It is covered with a tenaceous 

 flime, and is of a pale dull yellow colour, fprinkled with 

 bright brimftone fpots ; tentacula very broad at the bafe, 

 and flat ; eyes fmall, placed at the bafe of the tentacula on 

 the infide ; front broad ; fujlentaculum fpread and moderately 

 long. \\'hen the membranes that ufually cover the fliell 

 are witlidrawn, the colour of the animal beneath the tranfpa- 

 rcnt fliell gives it an appearance of highly poliflied tortoilhell. 



It is by fiu* the moft pellucid, and fragile, of any fpccies 

 of (hell ^^•ith which we are acquainted, and from which it 

 is extremely difficult to extract: the animal without breakina:, 

 as it will fcarcely bear handling. 



L.cviGATA. Bulla vellutina. Mull Zool. Dan. iii. t. 101. 



p. 3Si2. Helix lyevigata. Lm. Trans, viii. p. 22L'. 



Putt. Hutch. Dorset, t. 18. f. 9. 



As there is little doubt fliis is the Bulla vellutina of 

 MuLLER, fo there is alfo much reafon for believing it to be 

 the Helix Haliotoidea of Luiii^^vs and Fabricius : both 

 Gmelin and Muller appear to concur in this opinion. 



Notliing 



