20 



Measurements. 



* indicates the type specimen. 



On the basis of field observation it is probable that the female 

 of the form is dark coloured like that of M. r. kiirodai of Yap, is- 

 land. It may on that account be separated from M. r. zvetmorci of 

 Ruk island. However, no female specimens of the form have yet 

 been obtained for examination. 



On Angaur island of Pelew Islands, M. rubratra seems to be 

 very rarely seen. It is probably belong of this form. 



A list of tlie subspecies of M. rnbratra on Micronesian islands. 



1. J/, rubratra rubratra (Lesson). Type loc. Kusaie, Eas- 

 tern Carolines. 



Habitat. — Caroline Is. : Kusaie. 



2. J/, rubratra dichroiiiata Wetmore. Type loc. Ponape, 

 Jveastern Carolines. 



Habitat. — Caroline Is. : Ponape. 



3. J/, rubratra zvctmorci Momiyama, subsp. nov. Type loc. 

 Uman, one of the islands in Ruk group, Middle Carolines. 



Habitat. — Caroline Is. : Ruk group. 



4. J/, rubratra saffordi Wetmore. Type loc. Guam, Marian- 



Habitat. — Marianne Is. : Guam and Saipan. 



