This bat is found in the transition zone of British Columbia, Washington, Oregon and northern California, along the coast.
It has been taken at Longmire, Paradise Valley and Sunset Park. It stays in the forests of the park, only occasionally being seen above the open meadows.
The coloration of the Northwestern long-legged bat, Myotis volans longicrus (True), above is dark brownish, sometimes blackish; the underparts are dusky brown. The ears and wings are blackish. This bat cannot be distinguished in flight from the Miller bat.
It is found in the humid coast and mountain region from Admiralty Island, Alaska, to Monterey County, California.
While it is apparently fairly common at the lower elevations, very few collections have been made. It has been taken at St. Andrews Park (5,500 feet) and at Longmire.
The silver-haired bat, Lasconycteris noctivagans (Le Conte), is a medium sized bat with dark brown or blackish coloration above and below. Many hairs on the back and underparts are tipped with white, with the white tips most numerous on the middle of the back. The wings are dark brown.
This bat occurs on the North American Continent north of Mexico, ranging from the Pacific to the Atlantic.
There is as yet no evidence that this bat actually stays within the park for any length of time. It is believed that it only moves through during migration. Records thus far obtained are during September, at elevations around 5,000 feet.
The Townsend lump-nosed bat, Corynorhinus rafinesque townsendii (Cooper), is of medium size, with long thin ears and two prominent lumps on either side of the nose. The coloration is dark brown above, somewhat lighter below, the base of the fur is dark slaty. The ears, feet and wings are dark brown.
The Townsend lump-nosed bat occurs from southern British Columbia southward through most of Washington and Oregon, and along the coast into California as far south as San Francisco.