AMERICAN HYMENOPTERA. 313 



One male, collected by T. D. A. Cockerell at Mesilla Park, New 

 Mexico. Type in National Museum. 



This species, according to Mr. Fox's tabulation, is related to 

 helieaon, but is apparently distinct in the fine punctures of the 

 head, the banded abdomen and the neuration of the wings. 



72. Hut ilia nokomis Blake (108 ). 



The collection of the Museum of Comparative Zoology contains 

 this species from Texas. 



73. Mutilla IS irk main sp. no v. 



Female. Wholly dark ferruginous. Head punctured ; eyes rounded hut dis- 

 tinctly facetted, very convex ; mandibles subacute, with a slight inner notch ; 

 thorax rugose, plurse moderately punctured; petiole of abdomen small, nodose; 

 second segment with coarse, elongate punctures throughout; pygidium promi- 

 nent, deeply striate longitudinally. Pubescence pale, moderately dense but not 

 concealing the sculpture except on the metathorax ; second segment of abdomen 

 apically with a patch of black hairs. 



Entirely dark ferruginous. Head subquadrate, straight behind, subequal to 

 the thorax iu breadth, closely finely punctured, more or less densely clothed 

 with pale yellow, appressed, irregular pubescence above and with longer erect 

 hairs on the vertex and base of the mandibles; eyes hemispherical, facetted; 

 anterior edge of the clypeus convex, sinuous ; scape curved at the middle, clothed 

 above with short, coarse, glittering hairs, subequal in length to one-half the 

 width of the front, pedicel oblong, first flagellar joint one-fourth longer than 

 the second ; mandibles stout, bent, bluntly attenuate on the straight outer three- 

 fourths, tipped with black, palpi piceous. Thorax longer than wide, ovate, regu- 

 larly narrowed behind, not constricted, the sides convex, rugoso-punctate, coarser 

 behind, the disc with appressed black pubescence, elsewhere with appressed and 

 erect whitish hairs, disc of metathorax with a dense patch of converging ap- 

 pressed pubescenee. which is margined by erect hairs; pleura; densely and com- 

 paratively coarsely punctured. Petiole of abdomen when viewed from above 

 nearly square, its anterior angles dentiform, rugosely punctured, the ventral keel 

 emarginate before the middle; second segment densely and uniformly provided 

 with elongate punctures, from which arise the yellowish appressed pubescence, 

 its anterior and posterior margins provided with a median patch of black pubes- 

 cence, that of the hind margin the denser, laterally and on the venter and the 

 remaining segments the hairs become longer, whitish; apical segments with 

 finer punctures; second ventral with coarse but distant punctures; pygidium 

 margined and sulcate with close longitudinal striae. Legs fairly stout, clothed 

 with long white hairs, the four posterior tibia; spinose. 



Length, 4.5 mm. 



Fig. 34 ; petiole. 



Described from five specimens collected by the Rev. G. Birkman 

 at Fedor, Lee County, Texas. 



It is with pleasure that I am able to dedicate this insect to one 



TRANS. AM. ENT. SOC. XXJX. (40) OCTOBER. 1903 



