1889.] NATURAL SCIENCES OF PHILADELPHIA. 333 



V. fuscus or from the fourth digit, as in many forms belongs actually 

 to the opposed side of the interspace. 



The third interspace with a large predigital which arises from 

 the side of the fourth digit half up the side of the metacarpal bone. 

 The post digital is absent. 



The interfemoral with numerous transverse lines as in Vespertilio 

 and allies. Two lines are attached to the tail, one passing to the 

 ankle and one to the free margin of the membrane as in Mormoops. 



The terminal cartilages as in Vespertilio except in the instance of 

 the fourth finger which is bilobate. 



Nycteris sp 1 



The intercostal nerves are rudimentary and six in number. The 

 intercosto-humeral leaves the arm at the elbow and descends ver- 

 tically thence. The internal-cutaneous nerve sends a large branch 

 to the fifth metacarpal bone. The predigital nerve of the fourth 

 interspace appears high up near the angle. The postdigital is absent. 



The third phalanx of the third finger one-fifth the length of second 

 phalanx. It is deflected somad at the margin. Well-defined 

 membranous phalanges are seen on the fourth and fifth fingers. The 

 fourth terminal phalanx is of cartilaginous consistence. 



Megaderma spasma. 



Prebrachium with a line on the distal part as in Pteropns. One 

 middle conspicuous intercostal, and one lower line (crural). The 

 intercosto-humeral system composed of two lines, which appear at 

 the distal fourth of the humerus but pass scarcely at all beyond the 

 line of the elbow. The internal cutaneous line sends a branch to the 

 fifth metacarpal bone as in Nycteris. 



The fourth interspace in addition to the predigitals and post- 

 digitals from the metacarpo-phalangeal joints possess a large nerve 

 which arises by two roots from the side of the fifth metacarpal bone 

 The interfemoral membrane with remarkably distinct pubo- 

 tibial bands. The distal third of membrane much less translucent 

 than the proximal two-thirds. The free margin of the endo- 

 patagium often presents a similar appearance. All the terminal 

 digits are well developed, membranous and lie somad in the free 

 margins of the membrane. 



The third interspace crossed by a line which unites the meta- 

 carpo-phalangeal articulations. A number of symmetrically ar- 

 ranged pigment patches are arranged on either side of this line. 



