T. Code 1958 Anthera spinolella 3 August Okfjilak Lake - seen commonly along the river valley - mostly in the flood plain but also on the old river terraces and on the alluvial fans and along the vegetated parts of the valley walls. Seems to be encountered more than the wheatear in the intermediate zones between the high country and the flood plain but otherwise the two species are closely associated in their habitat series. 4-7 August Okfjilak - seen each day, and on 9th seen in the high country all the way up to 6000 feet. 22 August Jugo Lake - seen daily at this station but not nearly as abundant here as last year. There were always 6-8 right around camp last year; more regularly here now. Few seen on the flood plain - perhaps 10 in 2 1/2 mile walk and somewhat more common on the rock stripes of the high mossaries.