cc. ITostrils exj^osed but not circular and 
without superior membrane or operculum, 
nor bill elongate conical with broad 
and depressed mesorhinum. 
5 / 
. ■ * * . r * r ^ -- * p . r ..t 
d. Hallux distinctly longer than lateral 
toes; basal phalanx of middle toe adherent 
for whole of its length to both lateral 
toes. 
dd. Hallux not distinctly if at all 
longer than lateral toes; basal phalanx 
of middle toe free for most if not all 
of its length from inner toe,, and (ap¬ 
proximately) for half its length from 
outer toe. 
[■ V .... *. ... r . . ; . . 
_e. Acrotarsium booted, at least on 
outer side. 
f. HO trace of rictal bristles, the 
plumage of whole head short, dense, 
velvety; body covered with down, 
aquatic. 
Oinclidae. 
ff. Rictal bristles more or les3 ob¬ 
vious (usually distinct), the plum¬ 
age of head normal; body without 
down, not aquatic. 
Turdids e• 
• Acrotarsium scutellate (-on both 
sides). 
Mimidae. 
