P. PEARSON 1955 graciloides = caprimulgus places. another [illegible] andinogyps in same place, and a graciloides only 6 feet away. Two other graciloides elsewhere on the line. Haven't detected any difference in habitat preference. Both are nocturnal, both with green vegetable matter in stomach. Oct 2 at 3:30 took the omnibus to Leon (two hours). In general it seems to be a descent down the valley to greater rainfall. Mainera - trifle more grass than Tilcara, otherwise same. Lumancia turnoff - same as Tilcara Tumucaya - some quite brushy places, hills with sagoaro and brushy sage. Volcan - Valley with willows, irrigated greensward, dandelions. Sagoaro almost gone and hills grassier. 2000 m. - short grass and bunch grass on east facing slope of valley; grass + thorn bush on west facing. Leon - West facing slope almost completely covered with a brushy forest. East facing slope has tall brush on lower slopes and grass higher up. Both short grass many thorny species, and bunch grass. The brush is 10-15 ft tall, some trees. Pretty well worked over by goats, cows, horses. Open places are grassy, little bare ground except under the brush, and much of this covered with small loose twigs. In the valley are willows, eucalyptus, fig, peachers, roses etc. Rarely snow here, more often in Tilcara. Cut out a little over one log of trails after rains with a goat woman. Mostly along stone walls on edge of brush and pasture + dusty cemetery.