L1.28, P.13. Even since leaving Doriabain I have seen only schistose rocks abounding in biotite, but they are filled with quartz and tremendously marked contorted. They break down to a very fertile soil as proved by the comparatively large native population. On the slopes approaching Doriabain from S. there were occasional pieces of agglomerate like that of Rora. At the bottom of that valley between Doriabain and Uleri I noticed much slate & shale, pretty deformed, but apparently the same as I saw in the Stici stream bed or places on the way down to Taverni. Thus, Mar. 11: A fair night & an excellent catch - 26 specimens including as the prize a pair of the rare water-rats Crossomys moncktoni; also a second specimen of Melomys gracilis? with lots of other Melmys, Sternomyx & a Rattus; a second Peroryctes of the ornatus group. Bad luck last night: a jumping dry got away with one of my three Phalanger sericeus skinks. Also Kafamokin has suddenly developed a badly swollen foot which I am giving the hot water treatment. Tonight will be our last trapping night & 2 hope to reach 100 specimens for Kagi. Again if a gray Popomys taken from the same tree - a small knot-hole. Probably this is P. dyer whose type locality is "Dinawa, Owen Stanley Range". He village policemen live near of a place called "Sinaua" or "Sinaura" on the Koterto side. The species may well extend over some 2 or 3 thousand feet of altitude and go through the "gap" when the great divide comes as low as 7300 feet. Black flies in this camp. Reverting to the collections, the Crossomys were taken in steel traps at the edge of a stream about 400 feet below camp; the Melomys gracilis I caught