182 



INSECTS OP SAMOA. 



Samoa. 



Pacific Islands 

 E. of Samoa.. 



Fiji. 



Tonga. 



Ellice. 



New Hebrides. 



Loyalty. 



| New Caledonia. 



Solomons. 



New Guinea. 



«i 



M 

 iJ 

 ■< 



Ph 



P 

 CO 



Malay Arch. 



India. 



Old World. 



New World. 



Psara licarsisalis ..... 



X 



X 



X 











X 



X 



X 



X 



X 



X 





Psara stultalis . . 



X 

















X 



X 



X 



X 







Noorda apiensis ..... 











X 





















Exeristis pollosta ..... 































Exeristis catharia ..... 































Exeristis asynopta 































Pyrausta amboinalis .... 































Phassodes vitiensis .... 





X 



























Reviewing the distribution table, the following facts emerge : — 

 Eighty-eight species are at present known from Samoa only. To this num- 

 ber must be added ten species of Geometridae recorded by Prout. How great 

 a proportion of these are endemic it would be impossible to say, but there is 

 little doubt about a certain number, e.g. Callopistria meridionalis nauticorum, 

 Oxyodes ochreata samoana, DeilepJiila placida steffanyi, Macroglossum hirundo 

 samoanum, Striglina oecia, Hoploscopa astrapias nauticorum, Piletocera albescens, 

 to which may be added Barasa rebeli, Anomocala hopkinsi, Cymodegma buxtoni, 

 Machaeropalpus fasciatus, Mormecia lachnogyia, Hydrillodes sigma, Doththa 

 plinthopa, Authaeretis exaereta, Margaronia samoana, Margaronia buxtoni, and 

 with perhaps less certainty the whole of the Epipleminae, the species oiDipty- 

 chophora, the species of Exeristis, and several species in the genera Bradina and 

 Piletocera. 



It will be noticed that every record linking Samoa with the islands to the 

 east also shows a considerable extension of the distribution to the west, in fact, 

 all the species concerned are well-known and in every case almost certainly 

 were introduced through human agency. 



Five species (Phlegetonia fasciatrix, Catephia acronyctoides, Hypocala 

 guttiventris, Rhinaphe virginella, Piletocera vestigialis) are recorded from Australia 

 and Samoa only, and I feel certain that in the case of the last four at least more 

 critical investigations are necessary. These cannot be carried out until more 

 material is available. 



Four species {Celama, samoana, Rivida polynesiana, Rhodoneura plagifera, 



