20 



BULLETIN 66, UNITED STATES NATIONAL MUSEUM. 



the third dorsal, third ventral, and fourth ventral, and 3 females 

 located in the fourth dorsal, fifth dorsal, and fifth ventral. On 

 December 7 he found in hibernation in a house 60 wasps of which 

 6 were parasitized. These were females. 



2 wasps contained 1 female each. 



1 wasp contained 1 female and 1 male exuvium. 



1 wasp contained 1 female, 1 exuvium, and 1 puparium. 



1 wasp contained 2 females and 2 exuvia. 



The location of the parasites in all wasps taken by Mr. Hooker is 

 as follows: 



Location. 



Second segment 

 Third segment.. 

 Fourth segment 

 Fifth segment. . 



Dorsal. 



Ventral. 



1 male 



. 1 male 



2 males. 



3 males 



. 2 males 



5 males. 



2 females.. 



. 1 male 



1 male, 2 females. 



ii females. . 



. 1 female 



7 females. 



Probably the most interesting feature is the hibernation of wasps 

 containing male exuvia. 



At the same place on December 31 Mr. J. C. Crawford took one 

 female containing a male exuvium. 



At Plummers Island, Maryland, February 24, 1903, Mr. W. V. 

 Warner collected a female bearing a male exuvium. This is un- 

 doubted hibernation with the empty case. At the same place 

 in December, 1906, Mr. H. S. Barber collected 35 hibernating wasps. 

 These were killed January 3, 1907, and 2 were found parasitized by 

 a single female each. The wasps were all females. In November, 

 1907, Mr. McAtee also collected 10 unparasitized male wasps, 89 unpar- 

 asitized females, and 6 parasitized females, containing 3 male and 12 

 female parasites. At the same place on November 9, 1907, Prof. W. P. 

 Hay collected 54 wasps, of winch 4 contained 6 parasites in all. 



POLISTES GALLICUS Linnaeus. 



Rosenhauer (1842) records from 77 wasps 81 male parasites 

 and 44 female parasites; 56 wasps contained males and 32 contained 

 females; 45 wasps contained males only, 21 contained females only, 

 while 11 contained both sexes. Siebold (1843) questions whether 

 Rosenhauer knew the sex of these parasites. 



POLISTES, new species, near MINOR. 



At Victoria, Texas, September 25, 1906, Mr. J. C. Crawford col- 

 lected four nests in one tree. Two nests were entirely unparasitized. 

 In one nest 25 female wasps were unparasitized and one male con- 

 tained a male puparium. The fourth nest contained 133 female and 

 52 male wasps unparasitized; and 2 females and 3 male wasps para- 

 sitized. 



