collected in Dutch 2\^ew Guinea. 191 



The measurements are as follows : — 



Wing. Tail, 



mm. mm, 



Tuaba River 117 49 



Setakwa "River 117 48 



116 49 



115 4.5 (worn) 



111 47 



Mr. Oberholser [cf. P.U,S. Nat. Mus. 42. pp. 11-20 

 (1912)] has reviewed this species, and recognises a number 

 of subspecies. Later Mr. Stresemann has further added to 

 the number. Some of the races described by these authors 

 seem to be tolerably distinct, but it is certain that too many 

 have been recognised. The C. fuciphaga group is a very 

 difficult one, and even with the resources of the British 

 Museum and the Tring Museum at one's disposal it is 

 difficult to decide as to the validity of some of the names : it 

 will thus be easily understood that the founding of new races 

 of the C. fuciphaga group on single specimens, such as the 

 type of Cf. cerophila Oberholser, from Nias Island, should 

 not be lightly undertaken. I am, however, obliged to 

 describe a new highland form from the Snow Mountains, of 

 which we possess but two specimens. 



Collocalia hirundinacea. 



C oil ocalia fuciphaga hirundinacea Stresemann, Verb. Orn. 

 Ges. Bayern, xii. p. 7 (1914). 



a. ? . Upper Mimika Hiver, 11th Feb. 1910. [No. 1046, 

 G. C. S.] 



h-h. S ? ^ Parimau, Mimika River, 14th Sept.-23rd Dec. 

 1910. [Nos. 190, 677, 717, 802, 803,807, 808, C.H.B. G.] 



i. S- Wataikwa River, 21st Sept. 1910. [No. 1215, 

 G. C. S.'\ 



This species is new to the British Museum and is easily 

 recognisable by its uniform whitish-grey, almost silvery- 

 grey underparts. 



Iris dark brown ; bill black ; feet dark brown. 



Total length in the flesh 117 mm. ( = 4-6 inches). 



