Progress in American ' 



TABLE. 





S P . 



s-,, 



Sp. 



S.sp. 



Pygopodes 



Longipennes 



S8 



51 



17 

 22 



"i 



23 



4 



3 

 5 



6 



4 

 18 







11 

 3 



117 



19 



20 

 21 



21 



11 



22 



321 



\ 



Steganopodes 



5 



Odontoglossa? 



o 























I'aittiH'i 



o 



Pui' 8 ^ ........" 





Macrochires 



7 









73S 



209 



755 



307 



This table will go to show that taking the species and sub- 

 species together in 1886, they amounted to 947, while in 1895 

 there were no less than 1062. In substracting the number of 

 species recorded in 1886 from those in 1895, we find that there 

 has been a gain of 17 species, and in dealing with the subspe- 

 cies in the same manner, we find that there has been a gain of 

 98 subspecies. A study of this table is interesting in other 

 ways, as the making of similar comparisons of any single 

 group, or those groups exhibiting the greatest increase and the 

 causes therefor ; but all such data can be easily appreciated by 

 the reader from what has been given above, and my space will 

 not admit of enlarging upon it here. 



For a moment we may now turn to the " Hypothetical Lists " 

 of the two editions of the work I have under consideration. In 

 1886 there were 26 species and subspecies relegated to its hy- 

 pothetical list, ranging from 1 to 5 for the families in which 

 they occurred. In 1895, Diomedea exulans is seen to be added 



