578 PR(XCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxv. 



Color of adult female taken in December: Back, very near the hair 

 brown of Ridgway, the hairs banded with four distinct rings of 

 color; the basal one-third clove brown followed by a band of bro- 

 coli brown; next a band of dark sepia, which is tipped by a narrow 

 band of pale brown. The mingling of the outer bands gives the 

 animal its characteristic color. Belly, pure white, with bases of 

 hairs nearly black; breast and sides of throat with a tinge of the 

 color of the back. An adult male, taken on May 5, has a somewhat 

 darker color, due to the wearing away of the pale tips of the dorsal 

 hairs. 



Measurement of an adult female: Total length, 92 mm.; tail, 43; 

 hind foot, 10; ear, 27; forearm, 43; longest finger,, 78; expanse, 225. 

 Cranial measurements: Greatest length of skull, 18 mm.; basilar 

 length, 12; palatilar length, 6.5; breadth over audital bulla 1 , 10; 

 depth from bulla?, !); maxillary tooth row, 0.5; mandibular length, 

 10.5. 



MYOTIS SUBULATUS (Say). 

 SAY BAT. 



Common but less abundant than M. lucifugus. During the winter 

 a few were found associated with the last-named species, the per- 

 centage, as nearly as it could be estimated, being 1 in 20. During the 

 late summer they entered the cave in greater numbers and for several 

 weeks, dining July and August, the Say bat exceeded any other 

 species in numbers. 



This species exhibits a considerable variation both in color and pro- 

 portions. In nine specimens collected between December 17 and 

 April 1) the hairs of the ventral surface are tipped with pure white 

 which glistens in life and makes the animals very conspicuous when 

 seen by lantern light in the cave. The hair of the dorsal surface of 

 the same individuals is paler than the average, being near the drab 

 of Ridgway on the outer third, with clove brown at the base. The 

 ears and membranes of these specimens are also pale, and the inter- 

 femoral membrane of some individuals is edged with a narrow pale 

 stripe. Hair soft, close, and short. 



An adult female taken on February IT is more yellow, approach- 

 ing the tawny olive of Ridgway, although not exactly matching it; 

 underparts dirty yellowish white; membranes blackish. A male taken 

 three weeks later is still darker, and it is almost exactly matched by 

 a male taken August 1 I. Other August skins are in fresh pelage. A 

 male killed on August !) has very short, dense fur, mouse gray in 

 color, but the hairs minutely tipped with cinnamon and but slightly 

 darkened at the base. Another taken the same date is very much 

 darker throughout. Fur on dorsal surfaces of both these bats tipped 

 with cinnamon. A male taken August 2. also in fresh pelage, is simi- 



