268 HELICID^E. 



as first described by him, being specifically identical with 

 it, and his name is consequently prior to all those which 

 I have enumerated ; but the reduplication of the same 

 name, both in a specific and generic sense, would be 

 objectionable. V. pusilla, as well as the present species, 

 were confounded by Montagu in the subsequent part of 

 his description. I fear that this little episode will 

 interest none but bibliographical naturalists. 



C. Shell dextral, cylindrical : moutli seldom furnished with 

 teeth. 



8. Y. eden'tula*, Draparnaud. 



Pupa edenhda. Drap. Hist. Moll. p. 52, pi. iii. f. 28, 29 ; F. & H. ir. p. 103, 

 pi. cxxx. f. 1. 



Body rather slender, ash-grey, of a darker hue aboTC, and 

 much paler behind as well as on the sides and imderneath ; 

 tubercles extremely small, reduced to blackish or grej'ish dots : 

 mantle very pale reddish-grey; tentacles thick, nearly smooth, 

 blackish-grey ; bulbs forming about one-third of their length, 

 oval, and very bhuit ; there is no sign of any lower tentacles 

 and not even a spot to indicate their place : foot oblong and 

 narrow, slightly pointed behind. 



Shell oblong, nearly cylindrical, thin, semitransparent and 

 glossy, light yellowish-brown or horncolour, marked with slight, 

 but niunerous, obHque and somewhat curved striae in the line of 

 gi'owth : p^r/^j/ie?'^/ rounded, although having a shght tendency 

 to angularity : epidermis thin: luhorh ^h-^h, moderately con- 

 vex, gradually increasing in size, the penultimate whorl rather 

 broader than the last, which occupies about two-fifths of the 

 shell : spire long, abrupt and blunt at the point : suture deep : 

 mouth forming an arch or segment of two-thirds of a circle, 

 destitute of teeth : o^der lip thin, very slightly reflected, except 

 towards the lunhiHcus, over which it folds on the side next to 

 the mouth : pillar lip nearly straight in adidt specimens ; 

 umbilicus narrow and contracted by the pillar, but rather deep. 

 L. 0-1. B. 0-05. 



* Toothless. 



