330 PROCEEDINGS OF THE ACADEMY OF [1889. 



Vespertilio ciliolabrum. 



The membranes throughout as in V. subulatus. 



The terminal phalanx of fifth finger with lobe-like tip and less- 

 deflected from line of the second phalanx toward the body. 

 Vespertilio nigricans. 



Presents a thickened fold on the border of the prebrachium. In- 

 tercostal lines four in number. Intercosto-humeral rudimentary. 



Fourth interspace with two predigital lines. The lower of these 

 is the largest and crosses the fifth digit. A minute fold extends on 

 the mesopatagium at the point of crossing. The postdigital is less 

 oblique than the foregoing. 



Vespertilio murinus. 



Endopatagium. Intercostal lines three, conspicuous. Intercosto- 

 humeral line undivided. The internal-cutaneous with four inferior 

 vertical lines, none of them crossing the main nerve. The para- 

 neural ones do not reach to within a centimeter of the radius. A 

 conspicuous linear marking ends in a tip along side of the terminal 

 phalanx of the fifth digit and appears to receive some of the endings 

 of the internal-cutaneous. 1 The oblique line from the muscle-mass 

 is inconspicuous. 



In the fourth interspace a marked linear fold lies in angle. The 

 oblique fold from muscle-mass Avell developed. The predigital and 

 postdigitals as in V. subulatus, excepting that a separate nerve 

 appears at the metacarpophalangeal joint of the fifth finger. 



The terminal phalanx of the fourth finger T-shaped ; that of the 

 finger is acicular and is enclosed in membrane. 



Corynorhinus macrotis. 



The markings are of the same general character as in Vespertilio. 

 Nycyicejus crepuscularis. 



Intercostals four. Intercosto-humeral appears near axilla and 

 becomes vertical a little beyond the elbow. The internal cutaneous 

 with a single superior oblique and a single vertical inferior: The 

 line above the main trend of the nerve as in V. fuscus. The fourth 



1 The appearance in V. murinus at the region of the mesopatagium along side 

 of the terminal phalanx of the fifth digit is due to a rod of cartilage which re- 

 sembles in structure that of the terminal phalanx. The details of the disposition 

 of this stylus varies in different forms. It is broad and spatulate in Vesperugo 

 discolor but acicular in Vespertilio my st acinus. The stylus is constant in many 

 forms, and inconstant in others. It is not separately described in the notes since 

 its nature was not detected until the paper was going through the press. 



