Page:Field Notes of Junius Henderson, Notebook 3.pdf/89

up we saw many dead snail shells, but none alive, on base of slope, where the black shales underlaid the surface. On the way back it was raining and live ones were crawling about by hundreds, under many kinds of bushes including sage brush Artemisia, rabbit brush rabbitbrush, scrub oak scrub oak and a small sour apple. Apparently Oreohelix gabbiana Oreohelix gabbiana and O. cooperi Oreohelix cooperi are mingled, the former predominating, if I am correct in assigning all without the red spiral line to that species. As many as 25 could be found under a bush two feet in diameter and the same in height. There were about as many under the sage brush Artemisia as anywhere. Up the slope on the sandstone there were none seen by us, either dead or alive. Returned to campo at 5 p.m. quite wet and tired. At camp saw nighthawks Chordeilinae and killdeer Charadrius vociferus. The channels cut in the lower Mancos shales just above the sandstone, where we found the