434 PROCEEDINGS OF THE ACADEMY OF [April, 



Macrotus waterhousii compressus n. subsp. 



Type.— Adult 9 ; Eleiithera, Bahamas. No. 122,484, U. S. Na- 

 tional Museum. July 6, 1903. Collected by S. H. Derickson. 



Distrihution. — Specimens have been examined from Eleuthera, New 

 Providence, I.ong Island and Conch Sound, Andros, Bahamas. 



General Characters. — Similar to Macrotus waterhousii and M. w. 

 jamaicensis, but differing in the quite narrow rostrum (which is an- 

 teriorly narrower than the interorbital region) and elongate-elliptical 

 first lower premolar. 



Head. — Similar to M. w. jamaicensis, except that the nose-leaf and 

 nose-pad appear to be slightly narrower and slenderer. This character 

 appears to be only an average one, however, as the series shows con- 

 siderable variation. 



Limbs. — Similar to M. u\ jamaicensis, l^ut the forearm, tibia, third 

 digit and tail average smaller, while the foot averages larger. In the 

 latter respect compressus approaches true waterhousii, as their respect- 

 ive distribution would lead one to suppose, from which the limbs show 

 practically no differential characters. 



Fur. — Essentially as in M. waterhousii and M. w. compressus. 

 Color. — Above Front's brown, the hair with more than the basal 

 half white ; fur at the base of ears and along the internal margins whit- 

 ish. Below the hair is white basally, ringed with pale drab, and tipped 

 with silvery -white. Membranes sepia, the ears and uropatagium paler 

 than the other portions. 



Skull. — Similar to that of M. w. jamaicensis, but with the anterior 

 portion of the rostrum narrower than the interorbital region. The 

 skull of true waterhousii can readily be separated, as it is of considerably 

 greater size. The mandible is also seen to be slenderer than in either 

 the Haitian or Jamaican form. 



Teeth. — Similar to M. w. jamaicensis, but with the first upper pre- 

 molar narrower and more elongate, and the first lower premolar is 

 distinctly elongate-elliptical in basal outline instead of subquadrate. 

 The teeth are distinctly weaker than in M. ivaterhousii, the latter 

 having a very heavy robust dentition. 



Measurements. — Type: Total length 94 mm.; head and body 69; 

 ear 24; greatest width of ear 18; tragus 8.5; forearm 52; thumb 13.5; 

 third digit 85; tibia 21; calcaneum 11; foot 13; tail 25 



Average of series : Total length [8] 96.7 mm. (88-98) ; head and body 

 [8] 64.5 (59-69) ; head [4] 25 (24-26) ; ear [8] 26 (23-29.5) ; greatest 

 width of ear [8] 18.8 (17-21.5) ; tragus [8] 8.9 (7.5-10) ; forearm [8] 52.1 

 (49.5-54); thumb [7] 13.9 (12.8-16); third digit [7] 88.7 (84-106); 



