Jonieh Mustela rixosa June 23 Point Barrow, Alaska One seen in drum area dodged in and out of several lemming burrows and refuges among the high polygona when pursued. Finally after 4 or 5 such attempts it disappeared into a burrow where we could not dislodge. June 24 Paul Hurd caught me by hand at Britton wanigan. It was a large & with a scattering of white on the sides that extended almost to the middorsal line of the thorax, giving much of the pelage a roan appearance. The under- side of the plex bore no evidence of molting, indicating the possibility of a color variation and not a late change of pelage. All the other weasels I have seen have been in full brown pelage. June 27 A pregnant & caught today by Pitelka on plot L.W. June 29 Hurd caught me at N. end of L.W. but it escaped when left for dead. It had run into a shallow lemming burrow containing meat and 5 young. The & lemming removed 4 of these to another burrow apparently after the weasel escaped. W.L. Thompson captured two in plot L.E., at separate locations, discovered them when standing quietly each time for just a few minutes during censusing. Chester Lampe brought in a lactating & from the village. Uterine horns were 2 to 3 mm. in diameter but traces of embryo scars were not detectable. The specimen, I think, weighed less than any other.