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<br />family Gcomyidac <br />Thanar~s talpoides <br /> <br />Pocket Cophers <br />Northern Pocket: Gopher <br />Ceom~s bursara.us Plains Pocket: Gopher <br />On basis of elevation, both of these Pocket Gophers might be expected <br />in the vicinity of the Hennigh and Ziegle properties; no Pocket Gopher <br />sign was noted during field studies; current populations are thought <br />to be very low, if any are present. <br />Family Heteromyidae Pocket Mice and Kangaroo Rats <br />Perognathus faseiatus Olive-backed Pocke•,. Mouse <br />Perognathus flavescens Plains Pocket Mouse <br />(Perognathus flavus Silky Pocket Piouse)* <br />Perognathus hispidus Hispid Pocket: Mouse <br />lDipodomys ordii Ord's Kangaroo Rat)* <br />*Althoush not recorded from Boulder County, Armstrong (1972) shcws <br />extreme eas[ern Boulder County as within the ranges of these species. <br />neither captured during our small mammal-trapping, nor reported to us; <br />each of these 5 species could be expected to occur in Boulder County <br />at the elevations of the Hennigh and Ziegle properties; habitat <br />conditions in 1973 judged to be poor; populations probably low, if any. <br />Family Castoridae :3eaver <br />Castor canadensis Beaver <br />Boulder County is within the historic range of the Beaver in Colorado; <br />no Seaver sign was noted during our 1973-74 field studies in the <br />vicinity of the Hennigh and Ziegle properties; currently probabl}~ no <br />amore than an occasional transient through this particular area. <br />