_Remarks._--The NAMRU2 party found the Marianas Fruit Dove at Guam to be fairly numerous in undisturbed jungle, and more abundant in the heavy, second-growth, scrub-forest as was found on Amantes Point in 1945. The birds were secretive but were easily located by their calls. They were usually found as singles sitting quietly concealed in thick vegetation. Birds were seen flying rather infrequently, and then only for short distances. The removal of large tracts of jungle to provide space for the construction of air strips and installations in the late war has disturbed some of the habitat of these birds. Although vast tracts of forest were undisturbed, the birds probably have decreased at Guam. Coultas (field notes) found the birds common at the northern end of Guam in 1931. He commented that natives catch them with snares and bird lime for the local markets. At Tinian in 1931, Coultas found few birds. Downs (1946:95) and Stott (1947:526) record the birds at Tinian and Saipan, respectively, in 1945. At Rota, the NAMRU2 party found the dove to be numerous. _Evolutionary history of Ptilinopus in Micronesia._--Oceania is especially rich in species and subspecies of the genus _Ptilinopus_. Ripley and Birckhead (1942) have made the most recent and most thorough contribution concerning these birds. They state that the center of distribution for the genus lies in the Papuan region. Within the Oceanic region there are several species of _Ptilinopus_ which in one way or another are rather closely related; Rensch (1938:277) uses these as examples of species which have been formed by isolation. These include _P. perousii_ from Samoa, Fiji, and Tonga; _P. mercierii_ from the Marquesas; _P. dupetithouarsii_ from the Marquesas; _P. huttoni_ from Rapa; _P. purpuratus_ from Henderson, Tuamotus, Societies; _P. porphyraceus_ from Samoa, Fiji, Tonga, Carolines, Solomons, New Hebrides, New Caledonia, and adjacent areas; and _P. roseicapillus_ from Marianas. In all of these birds the crown is wine-red except in _P. dupetithouarsii_ in which it is whitish. _P. porphyraceus_ appears to be more closely related to _P. purpuratus_ than to any other species and is characterized by an often brightly washed spot of color of some shade of red or orange on the breast. These birds may have invaded Micronesia from the region of the Solomon Islands, although it appears more likely that they arose in the Samoa-Fiji-Tonga region and moved northward, probably by way of the Marshall Islands. _P. p. hernsheimi_ from Kusaie and _P. p. ponapensis_ from Ponapé and Truk resemble _P. p. faciatus_ Peale from Samoa more closely than they do any other subspecies. _P. p. pelewensis_ from Palau, on the other hand shows little relation to these other two Micronesian subspecies and appears to be closest to _P. p. porphyraceus_ of Fiji and Tonga or possibly to _P. grayi_ from Melanesia. Ripley and Birckhead (1942:7) suggest that the subspecies at