8. 8CHIZ0ST0MA. 477 



though well developed, is not expanded or free in front, as in Vam- 

 pyrus, and the wing-membrano is attached to the extremities of the 

 tibiae or to the sides, not the backs, of the feet. 



Synopsis of the Species. 



a. The second phalanx of the middle finger 

 equal or nearly equal to the first. 

 «'. Oalcaneum longer than the foot. 



a". Wings from the tarsus or metatarsus. 

 a'". Forearms and legs hairy ; the second 

 phalanx of the middle finger slightly 



shorter than the first; forearm l"-6.. 1. iSch. hirstdum, p. 477. 

 V". Forearms and legs naked ; the second 

 phalanx of the middle finger slightly 



longer than the first ; forearm l"-46. 2. Sch. megalotis, p. 478. 

 b'. Calcaneum shorter than the foot. 

 b". Wings from the tibise. 



c'". Forearms and legs naked ; the first 

 and second phalanges of the middle 

 finger exactly equal in length ; fore- 



arm l"-35 3. Sch. minutum, p. 479. 



0. The second phalanx of the middle finger con- 

 spicuously longer than the first, 

 c'. Calcaneum much shorter than the foot, 

 c". Wings from the tarsi ; forearms and legs 



nearly naked j forearm l"-85 4. Sch. behnii, p. 479. 



1. Schizostoma hirsutmn. 



Schizostoma hirsutum, Peters, MB. Akad. Berl. 1869, p. 396. 



Muzzle narrow, cylindrical, the crown of the head slightly vaulted ; 

 horseshoe-shaped nose-leaf adherent to the muzzle in front, but with 

 a distinct anterior margin ; the erect lancet-shaped leaf as broad in 

 its broadest part as the horseshoe, abruptly narrowed in its upper 

 third and terminating shortly in a subacute point, surface smooth, 

 no central ridge, covered with a few almost invisible hairs which 

 are most abundant along its margin : ears slightly longer than the 

 head, united by their inner and posterior sides by a low band con- 

 cealed by the fur of the head ; lower half of the inner margin of the 

 ear-eonch very convex, upper half less convex, broadly rounded off 

 above ; the outer margin slightly convex, terminating in a line with 

 the angle of the mouth, midway between the base of the tragus and 

 the eye ; tragus narrowed upwards, reaching its greatest breadth 

 slightly above the base of the outer margin, with a slight notch 

 forming a very small lobule opposite the base of the inner margin ; 

 ehin with two longitudinal naked elevations converging below and 

 enclosing between them a deep V-shaped groove. 



Metacarpal bone of the thumb equal to the remaining part in 

 length ; metacarpal bones of the third and fourth fingers equal, the 

 fifth metacarpal shorter ; first phalanx of the middle finger very 

 slightly longer than the secolid. 



Wings from the metatarsus ; calcaneum slightly longer than the 



