No. 22.] HYMENOPTERA OF CONNECTICUT. 621 



Hartford, 30 June, 1896 (S. N. D.). The species, which 

 looks like an ant, undoubtedly occurs throughout the entire 

 State. 



MYRMOSID^. 

 Myrmosa Latreille. 



M. unicolor Say. 



The female of this species was described by Blake under the 

 name thoracica. It is ferruginous, with the first abdominal 

 segment blackish above; head and thorax are coarsely punctate, 

 and the base of the first ventral abdominal segment is produced 

 into a tooth while the first dorsal segment is transversely carinate. 

 The male is black, and has the second submarginal cell triangular, 

 smaller than the third; the hind coxae have a blunt tooth above; 

 the second ventral segment unarmed. 



It has been taken at New Haven, 26 June, 1902 (E. J. S. M.), 

 19 June, 1908 (B. H. W.) ; Hartford, 6 August, 1893 (S. N. 

 D.) ; and probably occurs throughout the entire State. 



MUTILLID.E. 



The North American species of this group, as well as of the 

 Methocidse and Myrmosidae, were tabulated by Fox in a paper 

 entitled " The North American Mutillidae " (Trans. Amer. 

 Ent. Soc, vol. 25, 1899, pp. 219-292) ; and additional notes and 

 species were given by Melander under the title " Notes on 

 North American Mutillidae with Descriptions of New Species " 

 {Ibid,, vol. 29 1903, pp. 291-330). All of the species belonging 

 to this family were considered by Fox and Melander to belong 

 to the single genus Mutilla. Ashmead has divided this com- 

 plex genus into a number of genera, some of which are good 

 while others are open to question. The following tabulation 

 of genera is based on Fox's species groups with the Ash- 

 meadian generic name for the same added. In a number of 

 cases these generic names will have to be changed when a 

 study of the genotypes of all the genera of Mutillidae has been 

 done, but at present this is impossible. 



There is such a great difference between the males and females 

 in this family that it is almost impossible to associate the sexes 

 without field observations, and until these observations have been 

 made it is best to treat the sexes as diflferent species. 



