314 Quarterly Journal of Conchology. 



reversed ones. TornatelUna appears with 2 species. Helidna 

 becomes abundant, a true Polynesian feature (14 species). The 

 other operculates are i&\\. Diplommatina 3, Cycloplioi us 6, Pupina 

 I, Realia 9. There is not a single species of Partula. 



C, Fiji Islands. Though these Islands have been explored by 

 Dr. Gra'Cffe, it is probable that much more will be found there. 

 Mousson has published the fauna in ''The Journal de Conchy- 

 liologie." The small zonitiform shells, doubtfully referred to 

 Nauina, now begin to appear. The Placostyli are of the section 

 C/iaris, such as P. Straiigei, and of another type, including Koro- 

 ensts, Seenianui, etc., of a narrower, heavier form, more like the 

 New Caledonian shells. There are 14 Placostyli altogether. 

 Amphidronius has 2 species, and PartuJa likewise 2. That these 

 genera, one distinctly Hindo-Malayan and the other as distinctly 

 Polynesian, should both be equally represented is strange. Prob- 

 ably further research will prove one or the other to be predominant. 

 TornatelUna, a genus widely distributed in Polynesia, has 2 species. 

 Diplommatina, which after a temporary disappeai-ance in the Malay 

 Islands reappears in Polynesia, has 7, and the allied Moussonia 

 I species. Realia is more abundant in Polynesia than elsewhere ; 

 in Fiji there are 10 species. 



D, Hew Hebrides. These islands seem to partake of various 

 characteristics. ^Vhilst 2 species of Placostylus and 4 of Geotrochus 

 indicate a West Polynesian f.iuna, and 2 of Amphidronius even a 

 Malayan, 6 species of Partula point more to East Polynesian 

 aflinities. These islands have evidently been very imperfectly ex- 

 plored, as besides the genera named, only the following have as 

 yet been found : Helix i, TroUiomorpha i, Paiula i, Buliminus i, 

 Cyclotus 2, Diplommatina 2, Cyclophonis 3, Pupina 2, Realia 2, 

 Helicina 6. 



3. East Polynesian Region. We include in this the remainder 

 of the Polynesian Islands, except the Sandwich Islands, which 



