M. Koford 1952 Vicugna 35 March 20 Huaylarco away as it ended and when I looked back I was paying no attention to this & or any other. I watched them 15 min. more & nothing happened. On E 138 flat was another copulating pair. ~ 50 yd. from them 4 others were grazing. I shifted forelegs alternately and nosed head & neck of ? often. I several times turned head sidewise to nose forelegs of ? After about 10 min. I rolled over onto side, I backed part way off without standing up, I rolled into prone position and I climbed on again. They continued as before for 10-15 min., then I again rolled onto side. This time I stood up and walked around in front of her and faced her. I then got into position again and I walked behind, knelt, & climbed on again. They continued another 10 min., then I rolled onto side and stood up. I got up and I ran with I chasing for about 50 yd. Then I stopped and I continued to walk away. When she paused I started toward her but stopped again as she continued to walk away. She kept walking north across mouth of E 138.2D then past Rocky Hill, and finally out of sight