664 MR. G. NEVILL ON THE CLASSIFICATION [DeC. 14, 



and oryza) in the Society's ' Proceedings ' for 1 875, p. Q77 . — first, in 

 the reflection of its mantle over the edge of the shell and the dorsal 

 lobes, which are well developed, though not to the extent that they 

 are in the Madeiran species (perhaps in a fresh state they may be 

 larger in the European); secoudly, and more particularly, in the 

 truncate mucous-pored extremity of the foot ; thirdlj^ in the dentition 

 there is close affinity ; and, fourthly, the jaw of L. tornatellina, 

 though more solid, exhibits transverse striation or scoring. All the 

 characters taken together, to say nothing of the shell, places Lovea 

 {=Ag7-aulina, Bourg.), and Ferussacia side by side, if they are 

 not generically identical, which I am inclined to think. It is most 

 interesting to find this very distinct genus represented both in the 

 Mediterranean and the far distant island of Madeira. 



Note by Geoffrey Nevill, C.M.Z.S. 



As I hope my friend Colonel Godwin-Austen will shortly pub- 

 lish an account of the animal of the type species of Risso's genus 

 Ferussacia, F, gronoviana, Risso (from specimens found by me at 

 Mentone), it may be well to give a short account of what seems to 

 me the correct classification of this small group, now that Colonel 

 Godwin-Austen has shown the animal of Ferussacia to be possessed 

 of a mucous pore. 



Family Stenogyrid^, Crosse and Fischer 

 (Moll. Miss. Sci. Mexique, 1874). 



A. Animal with mucous jmre. 

 Genus Ferussacia, Risso 

 (Hist. Nat. Europe Mer. 1826 : type F. gronoviana). 

 Folliculiana, Bourg. Rev. et Mag. Zool. 1856. 



Prof. C. Semper (Reisen Philippinen, iii. p. 135) gives some 

 details of the anatomy of the ISIauritian species Ferussacia harclayi, 

 Benson, P. Z. S. 1855 [as iS^^n-carw sp.]. I have already recorded 

 in my Hand-list that I found one living sinistral specimen. 



Subgenus Proceruliana, Bourg. 

 (Rev. et Mag. Zool. 1858: type Ferussacia procerula, Mori.). 



I have given Colonel Godwin- Austen specimens in spirit of a 

 typical species of this well-marked group. 



Subgenus Agraulina, Bourg. 

 (Rev. et Mag. Zool. 1858: type Ferussacia triticea, Lowe). 



V&\i=FusiUus, Lowe, Ann. & Mag. Nat. Hist. 1852: type 

 Ferussacia oryza, Lowe, sine descr. 



'i'&xi,=AmphoreUa, Lowe, I. c. : tyipe Ferussacia mitriformis, LowCj 

 sine descr. 



