99 
CRESTED BLACK WATER-CHAT. 
Blechropus crislalus, S wains. 
PLATE VII. 
Entirely black, with a large spot of white on the base of the 
inner web of the primary quills ; head with a conspicuous 
crest of slender lengthened feathers. 
Musicapa comata, Lich. in leteris. 
The bird we have here selected as an example of 
the genus Blechropus., will serve to show in what 
respect this group differs from that of Flumcolina, 
although we candidly confess we do not as yet 
sufficiently understand the typical characters, or 
are we prepared to say whether this is a typical or 
an aberrant species. It is clear, however, ffom 
the strength and length of the legs, that it belongs 
to the Water-chats, and not to the Tyrants, while 
it differs so much from the typical examples of all 
those genera which compose the Flumcolince, that 
we can only choose between viewing it as an aber- 
rant species of Fluvicola, or separating it as a sub- 
genus. I have adopted the latter view, at least for 
the present ; and until we know more of those birds, 
called by Azara Pepoaxas, and of certain others, 
