ITALY AND SICILY 



293 



Leucocliroa candidissinia Drap. 

 Hyalinia olivetorum Gmel. 

 Zonites algirus L. 

 Helix rangiaua Desli. 



,, serpentina Fer. 



,, niciensis Fer. 



., splendida Drap. 



,, vermiculata Mlill. 



., melanostoma Drap. 



., aperta Burn. 



Helix ciliata Ven. 



„ explanata Miill. 



,, apicina Lam. 



„ cespituni Drap. 



,, Terverii Mich. 



,, py rami data Drap. 



„ trochoides Poir. 

 Ferussacia folliculus Gron. 

 Jlumina decollata L. 

 Pupa niegacheilos C. and J. 



Several species of fresh-water Hydrohia {Bitliynella) occur. 

 The district, on the whole, unites certain 

 cliaracteristics derived from northern Italy 

 with those of eastern Spain. 



(iii) The Halo - Balm at inn district in- 

 cludes Italy and tlie neighbouring islands 

 ((yorsica, Sardinia, Sicily, Malta), and the 

 regions at the head and north-eastern shores 

 of the Adriatic (Carinthia, Carniola, Croatia, 



and Dalmatia), the line which separates these ]?jq_ i^Q.—iieUxiPoma- 



s. 



epi- 



tia) cqierta L. 

 France, showing 

 phragni. 



latter districts from the fauna of southern 

 Austria, Bosnia, and Servia being very difli- 

 cult to define. 



Italy, with the neighbouring islands, has a rich molluscan 

 fauna. In the sub-Alpine districts of northern Italy the promi- 

 nent Helix- groups are Cam])ylaea, Pomatia, and Anchistoma, 

 which in the south are generally replaced l)y Ihrrus, which here 

 attains its maximum development. Large Hyalinia are abund- 

 ant in tlie north, and Fomatias and Clausilia are frequent all 



Fig. 197. — Helix {Cam/>, 

 Stud., Piednioiit. 



Fic. 19S.— I/e!ix {Therus) 

 striyaia Miill., Florence. 



along the Apennines. Sicily has about 250 species, li;df of 

 which are peculiar. Helices of the Iherus type abound, Ijut 

 Camjjylaea is reduced to two species. Many peculiar forms of 

 Clatisilia occur, especially a latticed type of great beauty. Feriis- 



