336 PROCEEDINGS OF THE ACADEMY OF [1898. 



the type is so old that it is impossible to trace the sutures in this 

 part of the skull, but the longitudinal folds forming the roof of the 

 posterior nares are apparently given off by the pterygoids. In fig- 

 ure 4 is shown a diagrammatic cross section «* 

 just in front of the hamulars. //^ 



Mandible very heavy and massive, especially * c S /t* 



in the region of the symphysis. It is quite un- „. . _.. 



B j i j n Yig. 4. — Diagram- 

 like that of any other member of the Glossopha- matic cross section 

 qince, and closely resembles that of Brachy- through ptery- 



■L 77 11 U ■ J * L S° ldS and fl ° 0r ° f 



pny I la, allowance being made for its much brain case at re- 

 smaller size. g' l0n marked a-b 



Teeth. — In number and arrangement the r y<*oTd, b.sp.==b&- 

 teeth agree with those of Phyllonycteris sezekorni, sisphenoid. 

 but in form they are even less typically glossophagine, than is espe- 

 cially the case with the mandibular teeth, which strongly resemble 

 those of Brachyphylla cavemarum. In relative size the teeth agree 

 with those of Phyllonycteris sezekorni except that the front upper 

 premolar is larger, the second upper premolar smaller, and the front 

 lower molar much shorter. The lower premolars are less crowded 

 than in P. sezekorni. 



Measurements. — Total length, 88 ; head, 28 ; greatest breadth of 

 muzzle in front of eyes, 10; eye to eye, 8; eye to tip of muzzle, 

 10.4 ; ear from meatus, 16 ; ear from crown, 13 ; width of ear, 12 ; 

 tragus, 8 ; tail, 12 ; free part of tail, 6 ; tibia, 22.8 ; foot, 17 ; claws, 

 5 ; width of uropatagium at middle of femur, 6 ; forearm, 48 ; 

 thumb, 14; second finger, 37 ; third finger, 84 ; fourth finger, 66; 

 fifth finger, 64; penis, 10. Skull: greatest length, 26; basilar 

 length, 20 ; interorbital breadth, 5.4 ; mastoid breadth, 12.4 ; depth 

 of brain case, 9 ; depth of rostrum at anterior end of first molar, 6 : 

 width of palate between last molars, 5 ; last molar to tip of hamu- 

 lar, 7.8 ; upper tooth row exclusive of incisors, 8 ; greatest length 

 of mandible, 16.6 ; depth of mandible at space between premolars, 

 3 ; lower tooth row exclusive of incisors, 9. 



General remarks. — Reithronycteris aphylla needs close comparison 

 with only one described species, the Phyllonycteris poeyi of Gund- 

 lach. 8 This bat, from the " Kaffeepflanzung Fuudator," Cuba, is 

 still wholly unknown except for the rather meagre original des- 

 cription. In size, color, general structure of the nose leaf, and 

 absence of calcar, it agrees very closely with Reithronycteris 



8 Monatsber. K. Akad. Wissensch., Berlin, 1860, p. 817. 



