1880.] OF FERUSSACIA AND ITS ALLIES. 666 



=Lovea [emend. Lowea], Watson, P. Z. S. 1875, p. 677 : type 

 Ferussaeia tornatellina, Lowe. 



The animal of this group is well described and figured by the 

 Rev. JR. Boog "Watson, /. c. 



(?) Subgenus Cylichnidia, Lowe 



(Ann. & Mag. Nat. Hist. 1852: types Ferussaeia leacockiana 



and F. cylichna, Lowe, sine descr.). 



The animal of these two species not being known, correct classifi- 

 cation is necessarily rather doubtful ; I have little doubt, however, 

 that the subgenus is correctly placed here. 



Subgenus Hypnophila, Bourg. 

 (Rev. et Mag. Zool. 1858 : type Ferussaeia pupceformis, Cantraine). 



■=Cryptazeea, Folin, Bull. Soc. Borda, Dax, 1877: type Ferus- 

 saeia monodonta, Folin. 

 ■Animal admirably described {I, c.) by the Marquis de Folin. 



(?) Subgenus Hohenwartiana, Bourg. 

 (Rev. et Mag. Zool. 1858 : type Ferussaeia hohenwarti, Rsm.). 



Another section of which the correct classification still seems very 

 doubtful ; I am inclined to think it will prove more nearly allied to 

 Cceeilianella than to Ferussaeia ! 



(?) Subgenus Pseudostreptostyla, Nevill. 



A new subgenus, which I propose for the remarkable form de- 

 scribed in my paper on the Land-Shells of Mentone (P. Z. S. 1880, 

 p. 134) as Ferussaeia^) abnormis. Its classification is also still 

 very doubtful. 



B. Without mucous pore. 



Genus Zua, Leach 



(Syn. Brit. Moll. 1820 : type Helix lubrica, Miiller, publication 



disputed ; also of Gray's Manual, 1840). 



= Cionella, Jeffr. Linn. Soc. Trans. 1830 : types Helix lubrica, 

 Miili., and Turbo tridens, Pult., =Jzeea tridens, fide Jeffr. 1864, 

 Brit. Conch., should be Cochlieopa, Fer. Prod. 1821, &c., as re- 

 stricted by Risso, 1826. 



= Cochlieopa, section Styloides, Ferussac, Prod. &c., 1821, 

 part., which cannot, however, be retained as Cochlieopa ; if main- 

 tained at all, must be applied to the marine form Halia priamus. 



If Zua be not accepted, Cionella must be used ; undoubtedly 

 Zua and Azeca are very closely allied. 



Genus Azeca, Leach 



(Leach, Syn. Moll. Brit. 1820 : type Turbo tridens, Pulteney, publi- 

 cation disputed ; also of Turton's Manual, 1831. = Cionella part.), 

 Jeffr., /. c. 

 Proc. Zool. Soc— 1880, No. XLIV. 44 



