438 



Bulletin American Museum of Natural History. [Vol. XXXVII, 



ber-October and January specimens. That the difference is probably 

 purely seasonal is indicated by a Medje specimen taken in September, 

 which is dark with white hair-tips, like the October-January specimens 

 from other localities. 



In its soft woolly pelage and other external features Hipposideros langi 

 appears to resemble closely Phyllorhina cyclops Temminck, from the Boutry 

 River, Guinea, but it is a much larger species and darker in coloration, 

 being blackish brown with white hair-tips instead of dull brown with 

 yellowish hair-tips. H. cyclops, however, appears to be little known, the 

 only original references to it being Temminck's description 1 and Dobson's 

 account, 2 based on two specimens, including one from the Cameroon Moun- 

 tains, the other without definite locality. Neither of these descriptions is 

 very satisfactory, the character of the skull not being mentioned in either. 

 Dobson's measurements indicate a total length of about 93 mm., and 

 Temminck's a total length of about 89 mm., as against an average of 113 

 mm. for 4 specimens of H. langi. Dobson gives the length of the forearm 

 as 62.2, as against an average of 68 in 10 specimens of H. langi. Temminck 

 gives the length of the forearm as 38 mm. (" antibrachium 1 pouce 7 lignes"), 

 which is obviously an error (possibly a misprint for 2 pouces 6 lignes = 63 

 mm.). 3 The type localities of the two forms are widely separated. 

 Dollman, however, has recorded two specimens from Avakubi (Rev. Zool. 

 Africaine, IV, fasc, 1, 1914, p. 76), as "Hipposideros cyclops, Temm.," 

 which probably are referable to the present form. 



H. langi differs greatly from all the African species of the genus Hippo- 

 sideros except cyclops, from which it is distinguishable by much larger size 

 and darker coloration. 



27. Hipposideros gigas niangarae subsp. nov. 

 Plate LI, Fig. 1. 



Type (and only specimen), No. 49103, 9 ad., skin and skull, Niangara, Uele 

 district, Belgian Congo, June 2, 1913; Herbert Lang and James P. Chapin. Ameri- 

 can Museum Congo Expedition. Orig. No. 2069. 



A small member of the H. gigas group. Dorsal hair-brown Y-patch of short 



1 Esquisse zoologique sur la Cote de Guine, 1853, pp. 75-77. 



2 Cat. Chiropt. Brit. Mus., 1878, p. 76. 



3 Dobson's principal measurements of a male in alcohol, from the Cameroon Mountains are: 

 "Length (of an adult cf), head and body 2" .8 [71.12mm.], tail 0" .85 [22], ear 1" .15 [38], nose-leaf 

 0" .5 X 0" .5 [12.7 X 12.7], forearm 2" .45 [62.23], tibia 1" .15 [29.2], foot 0" .65 [16.5]. 



Temminck's measurements are: "Longueur du bout du museau a la pointe de la queue 3 pouces 

 6 lignes [about 89]; hauteur des oreilles 1 pouce [25.4]; queue 6 lignes [12.7]; envergure 12 pouces 6 

 a 9 lignes [about 273]; antibrachium 1 pouce 6 lignes [38], probably in error]. 



