AMERICAN MUTILLID.E. 287 



4. Myrniosa flioracica Blake. 



MiiHIla thoracica Blake, Tr. Am. Ent. Soc, xiii, 204, 9, 1886. 

 Mutilla erythronota Dalla Torre, Cat. Hym., viii, 36, 1897. 



Generall}' distributed, as M. unkolor. 



iVIORISYIfIA * gen. nov. 

 Female apterous; eyes facetted; three distinct ocelli; thorax 

 divided into three parts; legs graceful, not flattened; tibial spurs 

 1-2-2; claws simple; abdomen fusiform, not cariuate, the first 

 ventral unarmed ; no pygidium ; body strongly punctured. Male 

 unknown. 



1. Morsyma AKiinieadii n. sp. 



9.— Head and thorax and first segment ferruginous; abdomen, except first 

 segment, legs and antenna; blaek : pubescence long and black, a whitish fringe 

 at apex of second dorsal : head with large, separated punctures, wider than 

 thorax ; mandibles acute, armed with a tooth within before apex ; thorax rugose 

 above, punctured on sides, except on middle segment, the sides of which are 

 smooth; abdomen finely punctured, except on second ventral, where the punc- 

 tures are large and separated. Length 6 mm. 



California : Napa County (Coquillet). One specimen in collec- 

 tion of the U. S. National Museum. 



Morsyma differs from Myrmma in the tripartite thorax, and while 

 agreeing in that respect Avith Methoca, differs from it in the coarsely 

 sculptured body, two-spurred medial tibise, etc. It is clearly re- 

 lated to both of these genera. 



METHOCA Latreille. 

 Of the four species at present on our lists, M. pacalis Harris 

 must be excluded, as it was never described ; 31. canadensis Smith • 

 is apparently synonymous with M.stygia; and M. californicusmW 

 probably turn out a variety of 31. hicolor ■ the latter is very likely 

 the female of 31. stygia. 



MALES. 



Pubescence griseus ; wings not clear slygia Say 



Pubescence black ; wings somewhat shaded n igrior n. sp. 



FE3IALES. 



Head black ; remainder of insect castaneous in greater part bifolor Say 



Head concolorous with greater part of body, castaneous. .califoru Jca Westw. 



^Anagram of Myrmosa. 



TKANS. AM. ENT. SOC. XXV. M.^KCH. 1899. 



