198 MR. J. G. GOODCHILD ON THE * (Apr. 6, 
the subject far enough to speak with confidence in regard tu other 
differences noticed. 
Fig. 22. Fig. 23. 
Gallinago, Scolopax, 
From the central forms of the Limicolz nearly all the modifi- 
cations of style observable in the Carinatz could be traced without 
difficulty ; and the forms now remaining to be considered join on 
naturally enough to such types as that represented by the Plovers. 
In one direction, and at no remote distance from the Plovers, we 
come to the Rails, represented in fig. 24. In another direction, 
Rallus. Sterna. 
gradations equally gentle conduct us to the Gulls and the Terns 
(fig. 25). Along another line of modification we arrive at the 
Cranes. The Storks again stand at no great distance. Each of the 
forms here mentioned, in turn, leads to others more distantly 
removed from the central type. Beyond the Gaviz lie the Pygopods, 
represented by Alca (fig. 26). These in turn graduate easily into the 
Tubinares, as represented by Puffinus and by Diomedea (fig. 27). 
Closely resembling these last in style of wing-coverts follows Sula 
(fig. 28) and Fregata (fig. 29), which lead the way to one of the 
extreme modifications of style observable in this particular, ex- 
emplified by Plotus (fig. 30). Starting from another point, the 
