380 Dr. Gwyn Jeffreys on some 



Mspida as liaving the umbilicus " small and narrow, but 

 deep ;" as to my variety nana^ I said nothing about the umbi- 

 licus, which is the same as in the typical form ; C. PfeifFer 

 describes the umbilicus in his H. depUata as " eng und tief ; " 

 and I described the umbilicus in my H. concinna as " rather 

 broad, open, and deep." I add no further comment. 



Helix virgata^ Da Costa (1778). 



Westerlund calls this species //. variahiUs^ Draparnaud 

 (1801), and cites as a synonym H. virgata, Montagu (1803). 

 But Da Costa's work was twenty-three years older than that 

 of Draparnaud. See Brit. Conch, i. pp. 210, 213. 



Vertigo MouUnsiana, Dupuy. 



After I had published this species as British (Brit. Conch, i. 

 p. 255) Westerlund described an allied species as V. modesta^ 

 and since as V. [Pupa) LilJjehorgi ; and he considered my 

 species to be the same as his, and not Dupuy's species. We 

 have now exchanged specimens ; and I am satisfied that he is 

 right. My Irish species must therefore take his name of 

 Lilljehorgi. But the species which I noticed in the Supple- 

 ment to my work (v. p. 160), and in the 'Annals' for May 

 1877, p. 432, as V. Moulinsiana (in consequence of Mr. 

 Groves's communication), is certainly Dupuy's species, and 

 is another addition to our list. A second British locality for 

 this species in a living state has been likewise discovered by 

 Mr. Groves, in the neighbourhood of Hitchin ; and he has 

 most courteously shown me the spot and assisted me in col- 

 lecting specimens. I subjoin a description of the animal. 



Body smooth, shining : colour^ above dark grey, with 

 darker streaks arranged lengthwise ; below of a much paler 

 hue, and interspersed with numerous, irregular, microscopic 

 black specks : mantle thickish, greyish-Avhite, protruded like 

 a short collar : snout hood-shaped, closely wrinkled across, in 

 front gently rounded, or very slightly indented on each side 

 so as to make that part trilobular : mouth small, triangular, 

 placed underneath the snout in the middle : tentacles club- 

 shaped, folding inwards, diverging at a right angle, having a 

 faint tint of purple ; there is not the least trace of a lower 

 pair of tentacles : eyes roundish-oval, seated on the bulbs or 

 points of the tentacles towards the front : foot thick, greyish- 

 white, three or four times as long as broad, squarish or nearly 

 truncated in front, and gradually narrowing behind to a blunt 

 point ; it is nearly the length of the shell ,• its texture appears 



