316 NORTH AMERICAN MUTILLIDAE 



EPHUTA Say and MUTILLA Linnaeus, subgenus TIMULLA Ashmead 

 For keys to the species of these groups see the revisions of the North Ameri- 

 can species in the preceding pages.* 



A List of the Species of Mutillidae Known to Occur in the 

 Eastern United States, with Indication of Their 

 Probable Sexual Equivalents^ 



We have now sufficiently extended and thorough collections 

 of Mutillidae from the Eastern States, with the exception of 

 Florida, to make tentative conclusions concerning the correla- 

 tion of the sexes possible. These conclusions as expressed in the 

 following table, are derived from a careful comparison of the 

 distribution of the several species, their relative abundance, local 

 abundance and association, etc. They fall short of being con- 

 clusive and I have therefore not amalgamated the names of the 

 species, but I am confident that they will eventually prove to 

 be in the main correct. 



Males Females 



Pseudomethoca Ashmead 

 (Pseudomethoca) Ashmead 



canadensis (Blake) canadensis (Blake) 



{N omiae-phagus) Ashmead 



geryon (Fox) ? simillima (Smith) 



sanbornii (Cresson) ? montivaga (Cresson) 



? aetis (Fox) 



oceola (Blake) hippodmnia (Fox) 



vanduzei n. sp ? 



Dasymutilla Ashmead 



(Brucsia) Ashmead 



bexar (Blake) harinonia (Fox) 



(Dasymutilla) Ashmead 



occidentalis (Linnaeus) occidentalis (Linnaeus) 



Comanche (Blake) comanche (Blake) 



pyrrhiis (Fox) ? 



* These Transactions, xlii, pp. 192 to 193, 202 to 205. 



6 Psammotherma ajax Blake, described from Florida, is supposed to be identi- 

 cal with Psammotherma Jlabellata Fabricius, and it is thought to have been 

 incorrectly reported from North America. 



