190 Mr. O. Thomas on a 
A complete set of the collection has been presented to the 
British Museum. 
Lasiurus borealis, Miill. 
One. 
Myotis nigricans, Wied. 
One. 
Ehynchonycteris naso, Wied. 
One. 
Saccopteryx bilineata, Temm. 
Four. 
Noctilio albiventer, Spix. 
Four. 
Molossus rufus, Geoff. 
Nineteen. 
Molossus obscurus, Geoff. 
Thirty. 
Molossus planirostris paranus, subsp. 0. 
Closely similar to the typical form in all essential respects— 
in size, shape of ears, general characters of skull, &c. Colour 
much darker throughout, the tips of the hairs black instead 
of brown, and the chin and centre line of the chest and belly 
scarcely lighter than the rest instead of markedly contrasted 
white. Patch of fur near the elbow on the antebrachial 
membrane and basal third of the forearm particularly well 
developed, as is also that on the wing-membrane on the distal 
side of the forearm. 
Skull rather longer and narrower than in true planirostris, 
especially narrower across the angular anteorbital ridges, 
which also appear to be further forwards. The distance across 
these ridges is decidedly less in paranus and more in plani- 
rostris than half the basal length. 
Dimensions of the type :— 
Forearm 35 millim. 
Head and body 58; tail 28; lower leg 12; third finger, 
metacarpal 37, first phalanx 16, second phalanx 14; length 
of fifth finger 31. 
Skull: greatest length 17:3; basal length 15; zygomatic 
breadth 11:8; anteorbital breadth 7°2; interorbital breadth 
4-5; front of canine to back of last molar 6°6. 
Type. Male. B.M. no. 1.7.11. 15. 
