ITALY AND SICILY 



293 



Leucochroa candidissiina Drap. 

 Hyaliuia olivetoruiu Gmel. 

 Zonites algirus L. 

 Helix rangiana Desh. 



serpentina Fer. 



niciensis Fer. 



splendida Drap. 



vermiculara Miill. 



melanostoma Drap. 



aperta Born. 



Helix ciliata Ven. 



„ explanata Miill. 



„ apicina Lam. 



„ cespituni Drap. 



„ Terverii Mich. 



„ pyramidata Drap. 



„ trochoides Poir. 

 Ferussacia folliculus Gron. 

 Rumina decollata L 

 Pupa megacheilos C. and J. 



Several species of fresh-water Hydrohia (^Bithynella) occur. 

 The district, on the whole, unites certain 

 characteristics derived from northern Italy 

 with those of eastern Spain. 



(iii) The Italo-Dalmatian district in- 

 cludes Italy and the neighbouring islands 

 (Corsica, 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 YiGr.i^Q.—Reiix {Poma- 

 these latter districts from the fauna of south- ^^a) aperta L., s. 



. , . T~» • 1 c\ ' ^ ' France, showing epi- 



ern Austria, Bosnia, and bervia being very phragm. 

 difficult 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 Campylaea^ Pomatia^ and Anehistoma, 

 which in the south are generally replaced by Iberus, which here 

 attains its maximum development. Large Hyalinia are abun- 

 dant in the north, and Pomatias and Clausilia are frequent all 



Fig. 197. — Helix (Campt/laio) zoaata 

 Stud., Piedmont. 



Fig. im.— Helix (Iberus) 

 strigata Miill., Florence. 



along the Apennines. Sicily has about 250 species, half of 

 which are peculiar. Helices of the Ibei'us type abound, but 

 Campylaea is reduced to two species. Many peculiar forms of 

 Clausilia occur, especially a latticed type of great beauty. Ferus- 



