THE YELLOW-NOSED MOLLYMAWK 



279 



black membrane behind the tubes is much broader, the two from each 

 side just meeting at the base of the bill; also there is no blackish mark 

 in front of the eye. Length of the wing, 20 inches; of the tarsus, 3.25 

 inches. 



In the yonng- bird the bill is entirely dark, and the head, neck, 

 and lower surface are brown. It is not uncommon on the coasts 

 of New Zealand, but its breeding-place has not yet been ascer- 

 tained. 



Grey-headed Mollymawk. 



(Gray's Gein-m of Birds.) 



The Yellow-nosed Mollymawk. 



Thalassarchc cldovorhrindi us. 



Like the last in colour, but the head is white. Bill, black; the upper 

 -margin, yellow, passing into orange at the tijj; the yellow narrows rapidly 

 behind the nostrils. The black membrane behind the tubes is very broad, 

 and the two from each side unite together broadly at the base of the bill. 

 No black mark in front of the eye. Length of the wing, 18.8 inches; of the 

 tarsiis, 3.1 inches. 



As in the case of the last species, this bird is not uncommon on 

 the coasts of New Zealand, and the breeding-place has also to be 

 discovered. 



