Page:Field Notes of Junius Henderson, Notebook 3.pdf/66

through wet weeds and mud was hard, so we did not do much climbing and found no fossils except one Halymenites major Halymenites major, which Terry found at the base of the Mesa Verde. Dips vary somewhat, owing to folds, but in general are westerly, from Rifle Gap Rifle Gap State Park northward. ((This is the west side of the "Grand Hogback", one of the major physiographic features of NW Colorado)) In the gap here above Rio Blanco Rio Blanco, Colorado is a small reservoir, where we collected one leech leech, a lot of small Physa Physa and water bugs water bugs. Under logs we got Zonitoides Zonitoides ? and Euconulus trochiformis Euconulus trochiformis. Dead Oreohelix cooperi Oreohelix cooperi were somewhat common about the scrub oaks Quercus. I found two live ones clinging to the upper surface of rocks beneath oaks Quercus. Red wing blackbirds Agelaius phoeniceus and bluebirds Sialia are common here. Also a large ground squirrel ground squirrel. We returned to camp about 1:30, wet and tired. At 4 p.m. I started up creek again, rain having ceased. Found Oreohelix cooperi Oreohelix cooperi very abundant