198 
CRYPTOLOPHA 
is the rasorial sub-genus, and has hitherto remained 
undistinguished, the species haring been coun- 
founded with other groups. It seems to represent 
Rhipidura in the pointed ends of the tail-feathers , 
but it differs from its prototype in several parti- 
culars. The bill is larger and stronger ; the anterior 
scales of the tarsi are entire, and not in four or five 
pieces; and the hind toe is so long as nearly to 
equal the middle toe. The two groups, how- 
ever, differ so materially in their manners, that 
they cannot possibly be mistaken ; for even their 
analogies are obscure. Cryptolopha, indeed, may be 
distinguished at first sight from all the Indian 
flycatchers we have yet seen ; for this is the only 
group in which the plumage of all that we have 
yet seen is olive-green. This is the only excep- 
tion to our former remarks upon the colouring of 
the Old "World flycatchers, and was intended, as all 
such general descriptions usually are, to be appli- 
cable alone to the pre-eminent typical examples ; 
that is, in the present instance, to the sub-genera 
Muscipeta and Myiagra. We have no doubt, in- 
deed, that many of the green flycatchers of South 
America truly belong to the sub-genus Lepturus, 
