28 



BULLETIN 15 3, UNITED STATES NATIONAL MUSEUM 



Gyldenstolpe,^^ however, records two specimens of typical wmhretta 

 from Cameroon (Messake River and Meme) with wings measuring 

 259 and 255 millimeters, respectively. A male from Ndikbo, Came- 

 roon, before me, has a wing of 295 millimeters and is nearer to 

 hannerjimni than to utiibretta. 



The following measurements are of interest at this point. 



It is curious to note that a male and female from Tanganyika Ter- 

 ritory are much smaller than other East African specimens as regards 

 the wing length. 



Birds from Madagascar (five adult females, only two of which are 

 tabulated) average slightly longer bills than mainland birds. 



The number of light bars on the central rectrices varies from six to 

 twelve in a series of 21 birds, regardless of sex or season. 



The hammerhead stork was seen, usuallj^ singly, along streams 

 from Errer to Sadi Malka. It was common along the Haw^ash River, 

 January 26 to February 23 ; 2 were seen at Loco, March 15-17 ; at the 

 Abaya Lakes, March 18-19, 16 birds were noted; at Gato River, 

 March 29 to May 17, 10 were seen; Lekiundu River, August 4-8, 1 

 bird; Athi River, August 30-31, 3 seen. 



8BKungl. Sv. Vet. Akad. Handlgr., 1024, p. 294. 



