10 ARKIV FÖR ZOOLOGI. BAND 11. N:0 12. 



to some other families and which are showing a similar mode 

 of nidification and habits as the Woodpeckers, Barbets and 

 Honey-guides, as will be seen below. 



Fam. Bucconidae. 



In a young specimen of Chelidoptera tenebrosa Pall. there 

 are rather well-marked pads measuring 8 mm in length and 

 2,5 mm in breadth at the broadest part, which is situated 

 at the middle. On the posterior part the dermal papillae are 

 placed exactly in the same manner as the scales of a fish. 

 They are rather large, broader than long and rounded off 

 posteriorly. On the anterior part of the pad, the papillae are 

 smaller and placed in more or less regular rows. The anterior 

 parts of some of the papillae are rounded off, while others 

 are of a pentagonal shape. In the specimen examined, there 

 are no pointed cusps on any of the papillae, though these 



may have occurred earlier. 



Fam. Galbulidae. 



A specimen of Galbula rufo-viridis Cab. exhibits fairly 

 well-developed heel-pads without any pointed cusps but of 

 ordinary shape and position. 



Fam. Coraciidae. 



Eurystomus orientalis pacificus Lath. 



Of this form I have been able to examine two young 

 specimens, both collected in Northwestern Australia 1911. 

 In both these specimens the integument of the metatarsal joint 

 is considerably thickened and covered with a number of round, 

 though almost smooth papillae, not very different from the 

 scales of the posterior börder of the tarsus. The edges of 

 these papillae are, however, somewhat thickened and higher 

 than the middle part, and have most certainly been used in 

 the same manner as the rough, pointed tubercles found on 

 the heels of the Woodpeckers. However, the young Rollers 



