198 



MR. J. G. GOODCHILD ON THE 



[Apr, 6, 



the subject far enough to speak with confidence in regard to other 

 differences noticed. 



Fiff. 22. 



Fig. 23. 



Gallinago. 



Scolopax. 



From the central forms of the Limicolge nearly all the modifi- 

 cations of style observable in the Carinatae could be traced witliout 

 difliculty ; 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. 



Fig. 24. 



Fig. 25. 



yCO 





IVI ' 



1 '. \ \ i\ 'A-^ %-■?■■<: v\^ \ \^'5? 



'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 Gavife lie the Pygopods, 

 represented by Alca (fig. 26). These in turn graduate easily into the 

 Tubinares, as represented by Ptffinus and by Biomerlea (fig. 27). 

 Closely resembling these last in style of wing-coverls 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 



