22. Pes trida&ylus 
23. Semi-palmated. Pes 
Semi-palmatus 
24. Ungue poftico feffili 
25. Digitis 4 omnibus 
palmatis 
EXPLANATION _ 
Roftrum cultratum 
Unguiculatum 
Lingua ciliata 
rf ntegra 
Lumbriciformis 
Pedes compedes 
Nares Lineares 
Marginate 
Suthue as want 1 the back toe. 
When the wetnly reach half 
way of the toes. 
When the hind claw adheres to the 
leg without any toe, as in the Petrels. 
All the four toes connected by webs 
as in the Corvorazts. 
OF OTHER LINNZAN 
TERMS. 
WHEN the edges of the bill are . 
very fharp,fuch as in that of the Crow. 
A bill with a nail at the end, as 
in thofe of the Goof/anders and Ducks. 
When the tongue is edged with 
fine briftles, as in Ducks. 
When quite plain or even. 
When the tongue is long, round 
and flender like a worm, as that of 
the Woodpecker. 
When the legs are placed fo far be- 
hind as to make the bird walk with 
difficulty, or as if iz fetters; as is the 
cafe with the 4uks, Grebes and Divers. 
When the noftrils are very narrow, 
as in Sea Gulls. 
With a rim round the noftrils, as in 
the Srare. 
CLASS 
/ 
Ce i ct 


