262 



STRUCTUEE AND CLASSIFICATION OF BIRDS 



In Glirysotis, on the other hand, the peroneus longus is 

 very small and only rises from the membranous continua- 

 tion of the fibula in the lower part of the leg ; it is so small 

 that it does not overlap the peroneus brevis at all, but lies 

 behind it. 



The parrots have a well-developed crop and a zonary 

 proventriculus. In the liver the right lobe is the larger ; 

 rarely are they subequal. The gall bladder is as a rule 

 absent ; but it is present in Cacatua and in Galopsitta, though 

 ' small and easily overlooked ' in the latter. 



The intestinal measurements in a series are as follows : — 



The most obvious comment upon the above list is to 

 draw attention to the very great length of the gut in Eclectus, 



