21 t PTEROrtJS Ar.DABRENSia. 



tlio colour of the back and rump strongly tinged witli broccoli- 

 brown and wood-brown. Forearm 134-5 mm. Ilab. Aldabra I. 



HhiU. — Not differing from that of Pt. comorensis except in the 

 much smaller size and relativelj' much broader mesopterj'goid 

 fossa ; Avidth of this latter 7"6 mm. {i. e. nearly seven-eighths of 

 palate Avidth between fronts of p*-p^), against 7'2-7'8 in the much 

 larger Comoro species (i. e. seven-tenths of palate width between 

 fronts of p^-p''). 



Teeth. — Structure and relative size of teeth quite as in Pi. co- 

 incrensis and allied species, except perhaps for a very slight reduction 

 of m'^ and m^. 



Ears. — Shape and relative size as in Pt. comorensis. 

 Fur.- — Eather softer, more silky than in Pt. comorensis. Approx- 

 imate length of longest hairs of back, mantle, and belly 21 mm. 

 Width of furred space at middle of back (measured on dried skin) 

 64 mm. Distribution of fur as in the Comoro species. 



Colour. — cJ ad., teeth slightly worn, skin: — General colour of 

 back and rump a shade of broccoli-brown, darkest on front and 

 middle of back, palest (almost wood-brown) on rump. Majority of 

 individual hairs of back pale greyish at base vfith wood-brown 

 extremities. A rather conspicuous sprinkling with silver}' greyish- 

 white hairs, particularly on sides of back, along membranes. Hairs 

 on forearm and sides of tibia mars-brown. — Breast and belly ochra- 

 ceous-buff with a tinge of bufi-yellow ; long concealed bases of 

 hairs seal-brown. Flanks more uniform dark broAvn owing to 

 shortness or, in many places, complete absence of bright-coloured 

 tips. — Mantle orange-buff strongly tinged with ochraceous-rufous, 

 shading posteriorly, in a transverse line across shoulders, into bright 

 ochraceous-bufF, and on sides of neck and foreneck into deep 

 ochraceous-rufoua. Concealed base of hairs of mantle and foreneck 

 everywhere seal-brown ; on the sides of the neck the seal-brown 

 colour is i-estricted to the extreme base of the hairs or, above the 

 neck-glands, quite obliterated. — Occiput, crown, interocular space, 

 and temporal region bright ochraceous-buff Avith a tinge of buff- 

 yellow ; base of hairs (concealed on uppcrside of head, slightly 

 shoAving through in temporal region) seal-brown. Muzzle, super- 

 ciliaries, chin, and throat blackish. 



The coloration, it will be noticed from the above, is in every 

 essential respect like that of Pt. comorensis and allied species, save 

 for the very strong admixture of broccoli-brown and Avood-brown iu 

 the colour of the back and rump. 



Size. — Much smaller than Pt. comorensis. 

 3Ieasurements. On pp. 221, 222. 



Specimen e.vamined. One skin with skull, from the collection of 

 the U.S. National Museum (Keg. no. 620G1). 

 Ranr/e. Aldabra Island, N. of Comoro group. 

 Colypes in the U.S. National Museum (nos. 20984, '85). 

 Literature. — A few examples collected by Dr. W. L. Abbott, and 

 one skull (Ji^i. s. c.) found by Dr. A. Voeltzkow in the house in 

 Aldabra formerly occupied by Abbott, seem to be the only specimens 

 recorded in literature. 



