Quarterly Journal of Conchology, 317 



indicate the proximity of the Malayan Islands. Trochomorpha is 

 well represented (7 species). The -other shells are Partida 3, 

 ToniatelUna 2, Pupa i, Cyclop/torus i, Cydostomus i, Realia 2, 

 Hdicina 2. 



J. Pelew Islands. These are very remarkable for the existence 

 of a peculiar genus of Diploinmatinacca, of which only one or two 

 species occur elsewhere, whilst there are 15 in the Pelew Islands, 

 and hence it has been named Palaina by Semper. There are 2 

 species of Pupina and even i of Chlorcea. Partula has 3 species. 



Ladrones. From these small islands the following only are 

 known : Siicdnea i, Microcystis 2, Helix i, Partula 6, Realia 2. 



4. Sandwich Island Region. We consider the Sandwich 

 Islands, from their peculiar fauna, as entitled to rank as a distinct 

 region from the rest of Polynesia, from which they are also geo- 

 graphically remote. They have, it is true, certain Polynesian 

 features. Endodonta and Pitys have many species (14), 

 and Partula exists, but only represented by two species. 

 There are aiso several of the zonitiform Nanina, but the 

 following peculiarities are, we think, sufficient to constitute 

 a distinct region: (i) The genus Adiatinella. Of this genus 291 

 species have been described, all from the Sandwich Islands. 

 Probably many so called species will turn out to be synonyms or 

 varieties, but even a reduction of a third or a half would leave a 

 very large number. From the anatomical investigations of Messrs. 

 Binney and Bland, it is probable that Achatinella will have to be 

 split up into two or three genera, and we are therefore disposed to 

 admit the subfamily Achatindlina proposed by Messrs. Gulick and 

 Smith, and this subfamily is exclusively from the Sandwich Islands. 

 (2) The genus Auricitldla, of which 19 species have been proposed, 

 all from these islands. Included in Achatindla till lately, this 

 genus is now admitted by Pfeiffer as distinct. (3) The genus 

 Carelia. These are long turreted shells with a peculiarly twisted 



