CATALOGUE OF INSECTS. 535 



Family XL THYNNIDiE. 



METHOCA Latr. 



M. bicolor Say. Camden Co., VI, 15, VII, 12, 26, Cape May, VI, 4 (Fox). 

 M. stygia Say. Ocean Co., VIII, 9 (Fox). 



Family XLI MYRMOSIDiE. 



MYRMOSA Latr. 



M. unicolor Say. Camden Co., VIII, 9, IX, 29 (Fox). 



M. thoracica Blake = female unicolor Say, (Ashm). Camden Co., VI, 28, 



(Fox). 



Family XLII MUTILLIDJE. 



The females resemble ants in general shape, in being wingless and in being 

 found running about among the grass in sandy spots. They are densely 

 clothed with hair, however, and are contrastingly colored with black, yellow 

 and orange, the name " velvet ants " being applied from their clothing. They 

 differ from the ants in lacking the nodes at the base of the abdomen, and from 

 our local species further in having a very long and very hot sting. The males 

 are winged and occur on flowers, the wings being usually black in color. They 

 are diggers, and while some of them are known to store food for their larvae, 

 others seem to be parasitic or guests in the nests and cells of bees or other 

 wasps. 



TIMULLA Ashm. 



T. hexag-ona Say, male = dubitata Smith, female (Ashm) Westville 

 (Cm), Atlantic Co., V, 29, Camden Co., VII, 22, 26, Gloucester Co., IX, 

 7 (Fox). 



T. ornativentris Cress., female = proinethea Blake, male (Ashm). West- 

 ville (Crn), Camden Co., VI, 28 (Fox). 



EPHUTA Say. 



E. scrupea Say, male = parvula Cress., female (Ashm). Camden Co., 

 (Fox). 



PSEUDOMETHOCA Ashm. 



P. canadensis Blake, female = S. cressonii Fox, male i Ashm). Camden 

 Co., V, 18. VII, 5, IX, 7 (Fox). 



