196 vespehtilionidje. 



tively smaller and narrower ears at once distinguish it. Added to 

 this, the extremity of the tail does not project by the last two ver- 

 tebrae as in V. serotinus, the last caudal vertebra being alone free, 

 and the foot is smaller. The differences in the distribution of the 

 fyr are described above. 



7. Vesperago hilarii. 



Vespertilio hilarii, 7s. Geoffroy, Ann. des Set. Nat. in. p. 441 (1824). 

 Vespertilio derasus, Burmeister, Fauna Brasiliens, p. 77 (1854). 

 Vesperus hilarii, Woffner, Stipjil. Schreh. Saur/eth. v. p. 767 (1855). 



Ears like those of the Serotine, but the concavity occupying the 

 upper half of the outer margin of the ear-conch is conspicuously 

 deeper, and the tragus is longer and narrower ; laid forwards, the 

 extremities of the ears extend nearly to the end of the nose ; the 

 face in front of the eyes is nearly naked, and the labial glands are 

 more developed than in any other species of the genus. 



Wings from the base of the toes : postealcaneal lobe shallow ; last 

 caudal vertebra and half the antepenultimate vertebra free. 



Fur dark brown above and beneath, the extremities of the hairs 

 paler ; beneath, the terminal third of the hairs arc paler than on the 

 upper surface. 



Teeth as in the preceding species. 



Length (of an adult S ), head and body 2"-\5, tail l"-65, ear 0"-7, 

 tragus 0"'3, forearm l"-45, thumb 0"-3, third finger 2"-65, fifth 

 finger l"-9, tibia 0"-55, foot 0"-35. 



Length (of the type specimen), tail 1""7, forearm l"-45, thumb 

 0"-3, fifth finger 2", tibia 0"-6. 



Hah. Neotropical Eegion (Brazil, Rio Janeiro, Port Alegre). 



8. Vesperugo platyrhinus. 



Vesperugo (Vesperus) platyrhinus, Dobson, Ann. §■ Maff. Nat. Hist. 

 1876, xvi. p. 262. 



Muzzle broad and obtuse ; glandular prominences large, smoothly 

 rounded ; nostrils opening near the margin of the upper lip, on a 

 level with the rounded extremity of the muzzle, not emarginate be- 

 tween. The front of the muzzle is evenly bevelled off from the 

 summit of the glandular elevations to the margin of the upper lip ; 

 and the nasal apertures are narrow, appearing as small oblique slits 

 in the front of the muzzle (Plate XH. fig. 1, head, enlarged). Ears 

 and tragus as in V. Jcuhlii. 



Wings from the base of the toes ; postealcaneal lobe small but 

 distinct ; last caudal vertebra half free. 



Pur, above, dark brown ; paler towards the tip ; beneath, similar, 

 the extremities of a lighter colour than on the upper surface. 



Upper incisors long, faintly bifid at the extremities ; outer inci- 

 sors verj' short, scarcely equalling the cingulum of the inner ones ; 



