488 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.40. 



The 251 parasitized wasps contained 443 male, 119 female = 562 

 parasites. 



78.8 per cent of the parasites were males. 



21.2 per cent of the parasites were females. 



POLISTES VARIATUS Cresson. 



Between November 20 and 30, 1909, W. L. McAtee collected all 

 the wasps which came into his room on Church's Island, North 

 Carolina. These wasps were 61 in number, and the data obtained 

 from them can be tabulated as follows: 



Gl female wasps; 29 unparasitized, 32 parasitized. 



0.0 per cent of the wasps were males, 100 per cent females. 



0.0 per cent of the parasitized wasps were males, 100 per cent females. 

 47.5 per cent of the female wasps were unparasitized, 52.5 per cent parasitized. 



The following data give more specifically the extent of parasitism 

 found in these wasps, bringing out the percentage of the sexes of the 

 parasites and their relations to each other: 



1 wasp with 2 male parasites = 2 parasites. 



5 wasps with 1 male parasite = 5 parasites. 



6 wasps with 7 male parasites. 



4 wasps with 3 female parasites=12 parasites. 

 4 wasps with 2 female parasites= 8 parasites. 

 6 wasps with 1 female parasite = 6 parasites. 



14 wasps with 26 female parasites. 



1 wasp with 3 male, 1 female (4) parasites= 3 male, 1 female= 4 parasites. 

 1 wasp with 2 male, 2 female (4) parasites= 2 male, 2 female= 4 parasites. 

 1 wasp with 1 male, 3 female (4) parasites= 1 male, 3 female= 4 parasites. 



3 wasps with 1 male, 2 female (3) parasites= 3 male, 6 female= 9 parasites. 

 6 wasps with 1 male, 1 female (2) parasites= 6 male, 6 female=12 parasites. 



12 wasps with 15 male, 18 female=33 parasites. 



Summarizing this I find: 32 wasps with 22 male, 44 female = 66 



parasites. 



33.3 per cent of the parasites are males. 

 66.7 per cent of the parasites are females. 



The location of the parasites may be summarized as follows: 



15 males protruding from the third segment, dorsal -> 



1 male protruding from the third segment, ventral/ ' 



4 males protruding from the fourth segment, dorsal | 



3 males protruding from the fourth segment, ventral/ * ' 



2 females protruding from the third segment, dorsal, total, 2. 

 17 females protruding from the fourth segment, dorsal, total, 17. 

 23 females protruding from the fifth segment, dorsal "i 



1 female protruding from the fifth segment ventral J ' 



