IlEl'ORT OP STATE ({ EOLOf; I ST. 



to occur within the State ; tln^ genus Nyciiceius, of probable occur- 

 rence, has but one incisor, but it has one less premolar than Las- 

 iurus. Externally, the thickly furred interfemoral membrane is 

 the best distinguishing character. 



The genus is represented by about twelve species, and is found 

 in both Americas and west to Hawaii. Two species are found in 

 Indiana. They may be distinguished by the following characters : 



Size large; forearm 50 mm. (2 in.) or more; color brown, overlaid with 

 white. cine re us. 



Size smaller, forearm not over 42 mm. (1 11/lG in.) ; color distinctly red, 

 with white tipped hairs. horealis. 



LASIURUS BOREALIS (Miiller). 

 RED BAT. 



Vespertilio horealis Miiller, Natursystem, Suppl., p. 21, 1776. 

 Atalapha novehoracensis H. Allen, Monog. Bats, N. Am., p. 142. 

 Evermann and Butler, Proc. Ind. Acad. Sci. for 1893, p. 134, 

 1894. 



Lasiurus horealis Miller, N. Am. Fauna, No. 13, p. 105, 1897. 



Diagnostic characters. — Color bright reddish, overlaid with gray 

 tipped hairs; interfemoral membrane densely furred on dorsal side. 



Description. — The hair is dark chocolate brown at the base with 

 a broad band of light yellowish following. Next comes a rather 

 narrow band of the characteristic color which is a sort of chestnut 

 or rufous red. Most of the hairs on the back are minutely tipped 

 with whitish, which gives the coat a frosted appearance. The red 

 is paler on the head and belly. Breast the same color as the back. 

 Hairs of face yellowish, without the white tips, as are those of the 

 belly and interfemoral membrane. There is whitish patch in front 

 of the shoulder. 



The ears (fig. 25) are very short, not reaching to the nostril 

 when laid forward. The tips are very broadly I'ounded; dorsal 

 surface heavily, and inner surface scantily furred. The tragus is 

 short, very broad and bent forward, the anterior edge concave; the 

 posterior edge convex, with a shoulder which sometimes is so j)romi- 

 nent as to give the dried specimens the appearance of having a bifid 

 tip. The membranes are rather thin mid of a dark (chocolate 

 brown color. The fingers and forearm are light reddish brown. 

 Hair extending on the wing membranes for* about half an inch and 

 covering the entire dorsal surface of th(^ intx^rfemoral membrane 

 and feet; wing membrane densely furred on the under side along 

 llic fonuirrn find bnse of the fifth finger. 



