Mammals 23 



is not uncommon in Colorado. It is known by its very large ears, 

 much longer than the head, and joined across the forehead. 

 Those who obtain specimens of this bat should search them for 

 the singular parasitic fly, Trichobius corynorhini, which appears 

 to occur only on this species. The first specimens of the fly were 

 obtained from a bat collected in the Great Sphinx Mine, Boulder 

 County, by J. J. Blanchard. 



The Colorado Insectivora are few, and not very well known. 

 The Colorado mole, found in the northeastern part of the State, 

 as at Wray, is called Scalopus aquaticus caryi of Jackson. It was 

 distinguished as a subspecies as recently as 1914, and is named 

 after Merritt Cary, who has done much work on Colorado mam- 

 mals. The water shrew, Neosorex navigator of Baird, is found 

 in our mountains, and swims with ease, as its name would suggest. 

 I have seen it not far from Long's Peak Inn, moving rapidly 

 beneath the surface of the water. Ordinarily shrews, the genus 

 Sorex, are found in northern regions all round the world. They 

 sometimes get into houses, and seem to be fond of milk, in which 

 they are occasionally found drowned. People confuse them with 

 mice, but the pointed nose and sharp teeth are very distinctive. 

 Our species need further study, and specimens should be col- 

 lected whenever the opportunity offers. Estes Park is the type 

 or original locality* for Sorex tenellus nanus of Merriam, a small 

 creature with a total length of a little over four inches. Warren 

 records that the masked shrew, Sorex personatus, was taken on 

 Pike's Peak at an elevation of 14,147 feet. This must be a very 

 "conservative" animal, in the sense of not changing under di- 

 verse conditions, for it was originally described from the Eastern 

 United States. It really seems astonishing that a shrew found 

 in New England should be identical with one from the mountains 

 of North Carolina on the one hand, and Pike's Peak on the other. 

 Yet authors have described some subspecies; one from North 

 Dakota, one from Labrador, and two from Alaska. 



CARNIVORA 



The carnivorous animals constitute an important element 

 in our fauna, on account of their variety, size, and many interest- 



*The type locality is the place from which the original material from which the species 

 was described came. If the materials come from more than one place, a particular specimen 

 should be designated as the type proper, or holotype, and its locality is the type locality. 

 Specimens of the same species from the type locality are called topotypes. 



