522 



NoviTATES ZooLoaiCAE XXVI. 1919; 



our knowledge is more complete, it will be found that British and Dutch differ- 

 only from French by not having codus or callias. 



The Lower, Middle, and Upper Amazon cannot be compared properly, owing 

 doubtless to our want of more knowledge from the Middle Amazon. Since 

 Bates's time surprisingly little has been collected in this region, and it cannot 

 be true that there are only 22 species in the middle area, while there are 26 ia> 

 the Lower Amazon and 31 in the Upper Amazon. Such species as aristeus and 

 molops are almost certain to occur, being found in the Guianas as well as the 

 Lower Amazon. Lycophron is another species that one would expect from the- 

 Middle Amazon. 



As a continuation of the West Indian chain and its papiUonid figures, it is 

 striking to see how poor Cuba is to the mainland. The Central American figures- 

 are even higher than those for the Guianas, due doubtless to variation in elevation, 

 but are the same for North Venezuela. The Central American and the Venezuela- 

 Guiana-Amazonian figures are placed in two columns for comparison : 



The figures for the different areas of the Nearctic region clearlj' show the 

 effect of climate on the papiUos. The middle States of Canada have the poorest 

 showing, with only 4 species. Eastern Canada is only one better with 5 

 species. But the Eastern United States have 7. In the much warmer 



