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           April 17, 1929. Wednesday

  We started from Yuma and went across to the California side and northward thru the Indian Reservation to Picacho. The country about Picacho, on the Colorado, is very picturesque, with mesas and jagged peaks all about. It is all desert country. [[strikethrough]] Near [[/strikethrough]] At the Picacho Mine, near Picacho, we came on a gopher  snake of perhaps 5 1/2 feet proceeding liesurely across the road. He was very beautiful, with a finely speckled pattern on the back of the head. Later in the day, when attempting to recatch a rattler, [[strikethrough]] the bag [[/strikethrough]] I left the bag open + he escaped. A little beyond Picacho Mine the road runs through a dry wash and we stopped to look for lizards. We shot here 2 [[underline]] Callisaurus [[/underline]] and a [[underline]] Cnemidophorus [[/underline]]. Here and beyond Picachio we obtained some [[underline]] Utas [[/underline]], but some were too badly shot up to save.
  [[underline]] Callisaurus [[/underline]] is very like [[underline]] Uma [[/underline]] it its behavior, and the two are doubtless very closely related. The resemblance extends even to the gridiron pattern on the undersurface of the tail and the spots on each side of the venter.

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  Along the river beyond Picacho we had hoped to find some [[underline]] Bufos [[/underline]], particularly [[underline]] alvarius [[/underline]], but a man at a ranch told us that he had never seen "big green toads" there. Amongst piled driftwood on the banks a few feet from the water, Kranzthor found a good sized rattler (atrox?) coiled up. I brought a noose + after he had been noosed we brought him back to the car. while Kranzthor was holding him he snapped his head away + he had to be recaught. It was in this excitement that the fine gopher snake was allowed to escape. 
  The rattler was in a perfect coil when found and did not move when we approached him closely. It was only when the noose was being poked over his head and the noose tightened that he began to rattle + to fight.
  Small [[underline]] Utas [[/underline]] with a pattern similar to that of [[underline]] Sceloporus undulatus [[/underline]] were common on the driftwood but some were too badly shot up to take. 
  We obtained a good picture of the Colorado above Picacho.
  I caught one [[underline]] Uta [[/underline]] with my hand under a bush near Picacho but he later escaped. I found him under an old cigar box near the road. These