1889.] NATURAL SCIENCES OF PHILADELPHIA. 317 



the tibia. Of the terminal digits that of the third is the same as in 

 Artibeus ; that of the fourth is triangular with the long angle directed 

 toward the body ; and that of the fifth is much the same but the 

 angle is so far produced that the form of the triangle is scarcely 

 discernible. 



Phyllostoma hastatum. (PI. x, fig. 1.) 



Prebrachium. An oblique line crosses prebrachium near the 

 wrist, a branch of a line and which runs parallel to the radius. 



Endopatagium, with two intercostal lines, and a number of 

 oblique secondary (muscle) lines. The intercosto-humeral line 

 appears at the middle of the humerus. Its main branch reaches 

 the line of the elbow and thence passes downward to near the free 

 margin. The internal cutaneous line with a vertical line near the 

 elbow, and a single large two-partite superior oblique line. The 

 main line goes nearly to the end of the fifth metacarpal bone, one 

 branch going toward the metacarpophalangeal joint. An oblique 

 raised line extends on the membrane from the end of the muscle- 

 mass. The fibers continuous with this Hue can be traced nearly as far 

 as the end of the fifth digit. A distinct line bes-ins at the tin of the 

 fifth finger and passes upward in a straight line. The terminal 

 branches of these two lines in part mingle. 



The fourth interspace presents six lines in the predigital series. 

 Of these one is a raised oblique line from the muscle-mass ; a second 

 answers to the nerve commonly found in the order. The postdigital 

 lines are two in number, — one from about each joint. 



The third interspace with a large predigital which extends 

 obliquely across the membrane to the end of the third digit. The 

 postdigital is small and unimportant. The longitudinal line is pres- 

 ent in both the fourth and third interspaces. 



The interfemoral membrane is marked by four vertical lines ; 

 the pubo-tibial is absent. 



Schizostoma sp ! 



The endopatagium is occupied by four vertical lines which are 

 forked above. The lowest (crural) line of the intercostal series alone 

 seen. The intercosto-humeral line absent. Mesopatagium. The 

 internal cutaneous line with a large vertical at the elbow. A single 

 large superior oblique is present which reaches the fifth metacarpal 

 bone. The main line reaches the end of the fifth finger. 



1 When a line is absent it is implied that it is not seen, and not that, by dissec- 

 tion, it cannot be demonstrated. 



