82 



n b . Bill straight and Thrush-like ; 

 rictal bristles well developed. 

 a 6 . Tail about twice tarsus. 

 a 7 . Throat of male brilliantly 



coloured ............ CALLIOPE, p. 101. 



b 7 . Throat of male coloured 

 like remainder of lower 

 parts ................ TARSIGER, p. 104. 



b 6 . Tail considerably more than 



twice tarsus. 

 c 7 . Tail uniformly of one 



colour. 

 a 8 . Tips of tail-feathers 



mucronate .......... IANTHIA, p. 105. 



b 8 . Tips of tail-feathers 



rounded ............ ADELUBA, p. 108. 



d 7 . Tail largely white ...... NOTODELA, p. 111. 



b 5 . Bill slender and curved ; rictal 



bristles obsolete .......... THAMNOBIA, p. 113. 



6 4 . Outer tail-feathers falling' short 

 of tip of tail by a distance 

 quite equal to length of middle 

 foe. 

 c\ Tail of one colour .......... CALLENE, p. 113. 



d 5 . Tail black and white ...... COPSYCHUS, p. 116. 



b'". Tail much longer than wing .... CITTOCINCLA, p. 118. 



Genus HENICURUS, Temm., 1823. 



The genus Henicurus comprises certain birds with the general 

 appearance of Pied Wagtails, but differing from them in having a 

 forked tail and ten primaries, together with a coarse bill. 



The JForktails are found in mountain-streams flitting from pool 

 to pool and feeding on insects which are found on the edge of the 

 water. They are solitary and not very shy when disturbed, flying 

 some distance further on, and on being disturbed a second time 

 frequently disappearing into the jungle to return to the stream 

 shortly afterwards. They wag their tails incessantly, and seldom 

 perch except on rocks and bare branches near the ground. They 

 build nests of moss in the banks of streams or under rocks and 

 snags, and lay spotted eggs. 



In Henicurus the bill is nearly as long as the head, stout and 

 straight, and the lower mandible is much bulged out in the 

 middle ; the rictal bristles are well developed ; the wing is large, 

 the first primary being about half the length of the second ; the 

 tail is much longer than the wing, deeply forked, and the median 

 feathers of about one third the length of the outer ones ; the 

 tarsus is long and of a very pale colour. The sexes are alike. 

 None of the species are known to migrate. 



