R.B. Hamilton 1967 Journal 11km E of Chiclayo, Pan Am Hwy, Dept. Lumber, sq gu., Piro, Elev. 100'. Sept 4 The 15hr traps & handset with negative results and in addition set at 23 snap traps in an attempt to see if Peromyscus maniculatus is present. Then back to the tent and sweet sleep. The weather at this location was mostly overcast with temperatures about 60° F. Sept 5 The morning was out a misty one with below (5knots approximately) winds and temperatures about 60° F. I got up at 0600 and checked my traps. I caught one mouse (it unfortunately was Accolon or something similar) in a small patch of Monkey's Ears 5'x10' on a drive about 3' long. All other traps were empty but one snap trap on leaf litter near big cactus plants was snapped. I pulled my open trap at this time but left his live trap out. After breakfast I picked up his trap and looked for Peromyscus maniculatus with an idea of starting one but they were unfortunately gone. The birds seemed to be the same ones that were present yesterday & then put up the seeds that were caught yesterday and decided to try to key some alive for analysis. We then both combed this area down in some areas and had to clear it out. With the aid of a few rocks, the two pieces of canvas laid and I ran an e-glass cloth, a little digging and my snaring net got at after about 4 hrs. Probably the height has in the car helped greatly in this undertaking. We then headed S on the Pan American highway. Between km 726-723 there were mine sand dunes on left side of highway. There seemed to be many gazete and cactus kinds as it looked like P. maniculatus might be present but we decided to push on. The ditches are twice both larger and