SYSTEMATIC STUDIES ON THE GENUS PALAEORHIZA OF NEW GUINEA COLLECTED BY THE THIRD ARCHBOLD EXPEDITION (I) (HYMENOPTERA, COLLETIDAE)

The bee genus Palaeorhiza of New Guinea collected by the 3rd Archbold Ex-pedition was studied. Twenty-five species divided into 12 subgenera are re-ported for the 1st report. N e w taxa described in this paper are: Michener-apis, new subgenus ; Palaeorhiza (Michenerapis) bicolor, P. (Sphecogaster) rufescezs, P. (Heterorhiza) amabilis, P. (Heterorhiza) misoolensis, P. (Heterorhiza) grandis, P. (Het-erorhiza) moluccensis, P. (Anchirhiza) a$nis, P . (Palaeorhiza) nitens, P. (Zarhiopalea) facialis, P. (Eupalaeorhiza) melina, P. (Cnemidorhiza) jlavescens, P. (Cnemidorhiza) aemula, P. (Cnemidorhiza) decorata, P. (Cercorhiza) sin&lima, P. (Cercorhiza) pullata and P. (Cercorhiza) angusta, new species; and P. (Ceratorhiza) conica rufa, P. (Za-rhiopalea) facialis basirufa, P. (Eupalaeorhiza) papuana insularis, P. (Hadrorhiza) lieftincki mutata, and P. (Cercorhiza) gressittorum rubicunda, new subspecies. Eupalaeorhiza is regarded as a good subgenus. P. (Heterorhiza) enixa Cheesman is treated as a new synonym of P. (Heterorhiza) &aria (Smith).