1913.1 



NATURAL SCIENCES OF PHILADELPHIA. 



129" 



The summary shows, as to the relative numbers of worms, that 

 nematodes are far the commonest; then come the cestodes, flukes, 

 and Acanthocephali in order named. This is the usual order given 

 in text-books. It seems, however, that our summary shows too 

 great a disproportion between the nematodes and cestodes, due 

 doubtless to the endemic of nematode Spiroptera in the parrots. 

 Excluding those, a ratio of two nematodes to one cestode is obtained. 

 This would appear to express about the proper relationship, which 

 now holds good in both birds and mammals. 



Tables have also been made shoeing the location of the parasites 

 in the different mammalian and avian orders, and in reptiles, as 

 follows : 



General Parasitological Table VI. 

 Site of Infestation. 



Aves. 



Alectorides ' |.... 



Columbffi j I.... 



PicariJB [.... 



Gavise L. 



Steganopodes ' 1 



Fulicarise 



Striges 



Psittaci 109 



Herodiones 



Galli 



Anseres 



Accipitres 



LimicoljE 



2 



2 



2 



1 



9 1 



1 2 



9 10 



9 

 1 

 1 



6 



2 



118 



27 

 10 



8 

 7 



1 



Totals 1 1 !l49; 6 63 1 ! 1 



1 14 13 267 



Six duplications, i.e., more than one parasite found in different organs of 

 same bird. 

 9 



