200 Mr. W. R. Ogilvie-Grant on Birds 



and vermiculated with blackish. A similarly mottled 

 specimen procured by Dr. Guillemard in Arfak, was figured 

 by Sharpe in Grould's ' Birds of New Guinea/ iv. pi. 39 

 (1886). 



It is still uncertain if this Goatsucker occurs in the Aru 

 Islands or is represented there by a distinct form,.^. bracJnj- 

 urus (Schleg.). The female procured by the 'Challenger' 

 Expedition at Wanoembai is smaller, with a wing measuring 

 113 mm. as compared with 123 mm. in the type-specimen of 

 u^. u'allacei, and 124 mm. in the Wataikwa specimen listed 

 above. . 



Mr. Goodfellow procured a fine male specimen of ^gotlieles 

 at Silbattabatta in the Aru Islands, which is also no doubt 

 referable to -zE. hracliyurus, if it is really separable from 

 udH. loallaoei. The wing of this specimen measures 117 mm. 

 The Aru birds appear to have a somewhat shorter wing, but 

 I can find no diff'erence in the measurements of the tail. 

 The characters which distinouish ^iE-. loallacei are the 



CD 



following : — The absence of a white band across the hind- 

 neck, the rather large and distinct light spots on the wing- . 

 coverts, the broad pale buff or rufous band extending from 

 the chin dowai the middle of the breast, and the smaller 

 number of light bars (ten or legs) across thp upper surface 

 of the middle tail-featherSj between the tips and the ends of 

 the upper tail-coverts. 



The closely allied yE. salvadorii Hartert {=-yE. rufescens 

 Salvad.) from South-east New Guinea, i^ distinguished by 

 having a white band across the hind-neck and more bars 

 across the tail' (more than ten) . y^. bennetti, another allied 

 form from the south-eastern parts of New Guinea, is distin- 

 guished by having a white band across the hind-neck, no 

 large white spots on the wing-coverts, and no band down 

 the middle of the throat and breast, whic^i are finely barred 

 with black and white. 



These three species, like all the Goatsuckers, are somewhat 

 variable in plumage, but can be readily distinguished by the; 

 above characters, which are borne out by the fine series of 

 Specimens in the Tring Museum. 



