ART. 15. ilEVISIOX OF THE MUTILLID WASPS MICKEL. 11 



have been compared and found to be identical. Melander and Brues 

 (1903) have observed this species near the nests of Halictus, species 

 and have described a combat between the two species; they have 

 therefore conchided that canade7isis is probably parasitic on Halic- 

 tvs species. 



2. PSEUDOMETHOCA DENTIFRONTALIS J. C. Bradley, new species. 



FeTTiale. — Sanford brown; nearly nude, a spot of appressed white 

 pubescence on each side of the disk of the second dorsal segment ; 

 covered with scattered, erect, long, fine, white hairs, these black on 

 the front; front, dorsum and second dorsal segment, except for the 

 white spots, with rather long depiessed black hairs, rather dense on 

 the second dorsal ; apices of the 3rd-5th dorsal segments with a small 

 amount of white or yellowish hairs. Length 4.5 mm. 



Head very large, transversely quadrate, much wider than the 

 thorax; its hind angles and the posterior borders of the temples 

 strongly carinate, the carina ending below in a spine, much as in 

 canadensis; width of temples twice the long diameter of the eyes, 

 which are 3^ times their diameter's length apart; head closely, shal- 

 lowly, somewhat confluentlj^ punctate; a curved carina extending 

 from below each eye to the antennae, at the base of which it is greatly 

 produced and bidentate ; antennae widely separated at base. 



Thorax short, its margins con^^ex, slightly contracted at the 

 spiracles, humeri not prominent, sides of propodeum margined, its 

 caudal face convex, rounded into the dorsal. 



Holotype. — Female, Felton, Santa Cruz Mountains, California, 

 May 15-19, 1907, at an elevation of from 92-153 meters (300-500 

 feet) (J. C. Bradley). Collection of Cornell University No. 655.1. 



P«m%^e5.— Female, May 18 1913, Carmel, Monterey County, 

 California (E. C. Van Dyke), Cornell University collection; female. 

 May 18, 1913, Monterey County, California (E.^C. Van Dyke), au- 

 thor's collection; female, Claremont, California (Baker), collection 

 U. S. National Museum; 3 females, Claremont, California .(Baker), 

 Cornell University collection. 



Paratijfe.—Q^i. No. 26393, U.S.N.M. 



This species comes nearest to nephele Fox. The prominent dentate 

 carina at the base of the antennae will at once distinguish it from any 

 other species. In nepliele these carina are slightly enlarged, but 

 not at all as in denti frontalis. 



Dr. J. C. Bradley had recognized this species as new and has sent 

 me the holotype and paratype material together with the description 

 of the species, which he had drawn up, and which is given above. 

 I have an additional specimen, one female from San Diego County, 

 California. 



