On new small Mammals from New Guinea. 533 



males a little smaller relatively than in maxwelli ; sexnal 

 disparity less marked than in the latter. 



Coloration and external characters, apart from smaller 

 size, exactly as in C. lowei ; size, ill anything, less than in 

 maxwelli. 



Skull conspicuously differing from those of other members 

 of the group in the unusually small nasals. In both sexes 

 these bones are shorter and narrower, absolutely and rela- 

 tively, than in either maxwelli or lowei. In liberiensis there 

 is a sexual difference in this respect, the. males having nasals 

 as large as, or larger than, in lotoei and maxwelli, while in 

 the females these bones approach those of danei. Maxillary 

 tooth-row intermediate in relative length between lowei and 

 maxwelli, the molar series being relatively longer than in 

 either. 



Remarks. — T have much pleasure in naming this interesting 

 duiker after Captain A. M. Dane, of H.M.S. ' Dwarf/ to 

 whom Mr. Lowe was indebted for much hospitality and active 

 assistance during his trip to Sierra Leone. 



LXII. — New small Mammals from New Guinea. 

 By Oldfield Thomas. 



(Published by permission of the Trustees of the British Museum.) 



Pipistrellus papuanus collinuSj subsp. n. 



Like true papuanus, but larger. 



General characters, including colour, structure of tragus, 

 dentition, and other details, all as in papuanus. Size, how- 

 ever, markedly larger, the forearm attaining 36 mm. as 

 compared witli 26-31 mm., and the skull also decidedly 

 larger. 



Dimensions of the type : — 



Forearm 3b' mm. 



Third finger, metacarpal 33'5, first phalanx 13 ; lower 

 leg and hind foot 22 5. 



Skull: greatest length 13*2; breadth of brain-case 6*5' ; 

 palato-sinual length 4'8; maxillary tooth-row 5 ; p x -nr 3*2. 



Hub. of type. Bihagi, head of Mambari River, British 

 Papua. Other specimens from Dinawa, Owen Stanley 

 Mountains, and the Upper Aroa River. 



Type. Adult male. B.M. no. 13.11.7.4. Collected 

 13th April, 1906, by A. S. Meek. 



The Pipistrels of New Guinea all seem referable to P. papu- 

 anus. The great majority are comparatively small, with 



