222 
14) Von Rapa oder Opara sind bekannt: 
Nanina orbis Beck. 
— Laidyi Charp. 
Patula oparica Anton. 
— radiella Pease. 
— bilamellata Pfr. 
Realia albescens Pfr. 
Realia pupoides Ant. 
— dubia Pfr. 
Cyclomorpha margarita Pfr. 
Gambier. 
Helieina villosa Ant. 
— minuta Sow. 
15) Von Pitcairn sind bekannt: 
Microcystis Adamsi Pfr. 
Nanina ornatella Beck. 
— auriculata Beck. 
Nanina brunnea Gray. 
— margarita Beck. 
Chondrella minutissima Sow. 
16) Von den Cooksinseln (Rarotonga, Aitutaki und Atiu) 
kennen wir: 
Nanina radians Pfr. 
— tongana Quoy Tonga. 
— venosa Pease. 
— caleulosa Gould. Tahiti. 
Patula fratercula Pease Gambier. 
— imperforata Pease. 
— Rarotongensis Pease. 
rotellina Pease. 
— decorticata Garrett. 
— Harveyensis Garrett. 
Otareae Garr. 
Youngi Garr. 
proxima Garr. 
atiensis Pease. 
canalis Garr. 
rudis Garr. 
tenuicostata Garr. 
Patula tumuloides Garr. 
— cavernula Garr. 
— multilamellata Garr. 
Partula assimilis Pease, 
Vertigo dentifera Pease. 
Diadema parva Pease. 
— rotella Pease. 
— biangulata Pease. 
Scalinella scalariformis Pease. 
Diplommatina scalariformis Pease. 
Realia affinis Pease. 
— ochrostoma Pease. 
— variabilis Pease. Tonga. 
— ovata Pease. 
Chondrella striata Pease. 
Helieina parva Pease. 
— flavescens Pease. 
1?) Von den Tongainseln führt Mousson (Journ, Conch, 
XIX. 1871 p. 5) nach den Sammlungen von .Graeffe fol- 
sende Arten auf: 
Microcystis firmostyla Mousson. 
— Futunaensis Mousson, 
— exerescens Mousson. 
— perpolita Mousson. 
Trochonanina Schmeltziana Mouss. 
— Tongana Quoy. Cooksins. 
Hyalina Samoensis Mousson. 
— microconus Mousson. 
Patula hystricelloides Mousson. 
— vicaria Mousson. 
— gradata Gould. 
— radicalis Mousson. 
