244 FNEUMONOBRANCHIATA. 



tremely thin and inflated, amber-coloured; spire 



with three scarcely produced volutions. 

 Limneus glutinosus. Drap. p. 50. ; Turton, Man, 



ed. 1. 120. f. 103.; Jeffreys, Linn, Trans, xvi. ; 



Michaud, t. 16. f. 13, 14. 

 Limnea glutinosa. Sowerby, Gen. f. 5. 

 Myxas Mulleri. Leach, Mollusc, p. 149. 

 Helix glutinosa. Mont. p. 379. t. 16. f. 5. 

 Buccinum glutinosum. Miiller, Verm. ii. 129. 

 Amphipeplea glutinosa. Nilson, Moll, Suec. 58. ; 



Bossm, Icon. i. 93. t. 2. f. 48. 



In stagnant ditches, England, Ireland. Locally 

 and periodically abundant. 



Montagu described the animal as large in propor- 

 tion to its shell, like many of the Bulla, and he thinks 

 it might be placed in that genus. It is covered with 

 a tenacious slime, and is of a pale dull yellow colour, 

 sprinkled with bright brimstone spots ; the tentacles 

 are very broad at the base, and flat ; eyes small, placed 

 at the base of the tentacula on the inside ; front broad ; 

 the foot spread and moderately long : when the mem- 

 brane that usually covers the shell is withdrawn, the 

 colour of the animal beneath the transparent shell gives 

 it an appearance of highly polished tortoise-shell. 



Shell about half an inch in diameter, extremely 

 thin and transparent, of an amber or yellowish horn- 

 colour, somewhat orbicular, with the outer lip much 

 expanded ; spire consisting of three and a half volu- 

 tions ; the smaller one lying nearly flat on the larger 

 one, marked by a deep suture, and ending obtusely ; 

 the larger volution regularly striate ; pillar without 

 umbilicus. 



This shell appears to have a very extended range, 



