1898.] 



NATURAL SCIENCES OF PHILADELPHIA. 



335 



Membranes. — Wings full and ample, at- 

 tached at middle of tibia. Uropatagium 

 reduced to a narrow frill scarcely wider 

 than the fleshy part of the thigh, and reach- 

 ing not quite to middle of tibia. Tail in- 

 cluded to middle in membrane. 



Tongue. — The tongue (figure 5) while 

 distinctly of the glossophagine type is con- 

 siderably broader in proportion to its length 

 than in any of the other members of the 

 group that I have examined. At the tip it 

 narrows very abruptly to an unusually 

 acute point. The terminal area of elonga- 

 ted stiff papillse has much the same general 

 shape as in Phyllonycteris sezekorni, allow- 

 ance being made for the difference arising 

 from the greater breadth of the tongue, but 

 Fig. 2.— Head of Phyllo- the individual papillae are shorter and of 



tSXgFi&X °"> re ™ ifo ™ ta-gth. » that the media,, 



(b). (Slightly enlarged), groove is less conspicuous (this difference 

 is very difficult to represent in the drawing). 



Skull. — The skull (figure 3) is larger and more massively built 



than that of Phyllonycteris or 

 any other glassophagine ge- 

 nus with which I am acquaint- 

 ed. The rostrum is especially 

 broad and deep. Face line 

 straight from nostril to middle 

 of brain case ; a well develop- 

 ed sagittal crest and lambdoid 

 crest ; bony palate behind 

 molars narrower than in Phyl- 

 lonycteris sezekorni. The ham- 

 ular processes are very broad 

 and strongly concave intern- 

 ally, the resulting form quite 

 different from that in Phyllo- 

 nycteris or Glossophaga. The 

 structure of the floor of the 

 brain case has already been 

 referred to. Unfortunately 



Fig. 3. — Skull of Reithronyeteris aphylla. 

 (About 1J times natural size). 



