Hamilton 1967 4, Catalogue Pentz Tric-Trac, 2 Km. E of Bayour, Dept. Pico, Peru. Elev. 20' 21 July 48 ♀ f<1mm Picarhino cinereo 37 gms. Taken from net about 10 yards from the in front of Accio's truck. 23 July 49 ♀ vulva open. 3 emb. (8mm.) Phyllotis gerbilis 165-85-19-16 17.5 gms. Trapped near hole in sandy area with scattered shrubs and trees. 50 ♂ t=9x7mm, Phyllotis gerbilis 156-80-21-17 15 gms. Trapped near hole in sandy area with scattered shrubs and trees. Distinct cell trapped in sandy area usually near hole. ♂ t=7x5mm, Phyllotis gerbilis 14.5 gms. ♂ t=8x4 mm " 16 gms. ♀ lactating, ut. scars present " 21 gms. ♂ testis not descended " 10 gms. ♀ vulva open; No scars " 10 gms. ♂ t=7x5mm. " 14 gms. ♂ t=7x5mm, " 13.5 gms. 24 July ♀ vulva fused " 10 gms. ♀ " " " 2.5 gms. 51 ♂ t=3mm Azarria interpres (Coll-R. Huey) 104 gms. Shot from orch associated with Heteroscelus incanus. 52 ♀ f=1mm Oceanites gracilis (Coll-R. Huey) 16.5 gms. Shot from beach flying at Vitolla Lagoon. 53 ♂ t=7mm Phoberocerus olivaceus Iris blue green. Shot flying near north of beach. Skeleton small. 1 Km N. of Sechura, Dept. Pico, Peru. Elev. 100' 27 July 54 t<1mm Hummie 6 gms. Shot from small araria tree in araria thicket, 54