INVESTIGATIONS ON THE MUTILLID WASPS 99 



series of specimens. The type of rnacra has been examined and the 

 genitalia found to be the same as figured for this species. The 

 pubescence of the second tergite of macra is longer, somewhat coarser, 

 and of more uniform color than in sparsa. Specimens vary in 

 length from 8 to 11 mm. This species does not occur east of the 

 Mississippi river, as far as is known, while sparsa is well distributed 

 over the eastern United States as well as the central western states. 



25. DASYMUTILLA STEVENSI. new species 



Female. — Black, the front, vertex, thorax above, and abdomen 

 above clothed with ochraceous pubescence; head as wide as the 

 thorax; thorax pyriform; scutellar scale absent; pygidium longi- 

 tudinally striate. Length, 12 mm. 



Head black; mandibles acute at the apex, with a minute tooth 

 within at a point one-third of their length from the apex; clypeus 

 not bidentate medially on the apical margin, the latter straight; first 

 joint of flagellum slightly shorter than twice its own width at the 

 apex; antennal scrobes carinate above; front with large, deep, con- 

 fluent punctures throughout, sparsely clothed with long, erect, 

 ochraceous pubescence; vertex with the punctures smaller and sepa- 

 rated, sparsely clothed with long, erect, ochraceous pubescence; 

 genae glabrous, with moderate, sparse punctures, not nearly as 

 coarsely sculptured as the front, sparsely clothed with erect, black 

 pubescence ; relative widths of head and thorax, 7.5-7.5. 



Thorax black, the dorsum very coarsely, deeply and confluently 

 punctured, becoming reticulate posteriorly, especially on the dorsal 

 surface of the propodeum, clothed with long, erect, or suberect, 

 orchraceous pubescence; propleura irregularly punctate, the punc- 

 tures small ; very sparsely clothed with long, erect, black pubescence ; 

 anterior half of mesopleura glabrous with a few scattered punctures, 

 the posterior half, coarsely and confluently punctate, the whole very 

 sparsely clothed with long, erect, black pubescence; metapleura 

 glabrous, the dorsal half impunctate, the ventral half with scattered, 

 shallow punctures; anterior half of sides of propodeum with scat- 

 tered small punctures, the posterior half with very large, shallow 

 reticulations; ventral half of posterior face of propodeum glabrous, 

 finely punctate, the dorsal half with very large, coarse reticulations; 

 posterior face of propodeum rounded into the dorsum of the propo- 

 deum; propodeum very sparsely clothed with long, erect, black 

 pubescence, except the dorsum which is clothed with long, ochraceous 

 pubescence; scutellar scale entirely absent. 



Abdomen black, second tergite, except the basal and lateral mar- 

 gins, tergites 3-5, and basal margin of last tergite clothed with 

 erect and suberect, long, ochraceous pubescence; disk of first tergite 



