174 BULLETIN 143, UNITED STATES NATIONAL MUSEUM 



the punctures of the pale spots large, shallow, and distinctly sepa- 

 rated; hairs of the second tergite black on the disk, pale laterally, 1 

 golden on the pale spots, and a thick fringe of silvery hairs at 

 the apical margin; tergites 3-5 with close, more or less confluent 

 punctures, clothed with sparse, silvery hairs; pygidium coarsely, 

 longitudinally striate, the lateral margins distinctly reflexed ; carina 

 of first sternite not sharp and prominent; first sternite with large, | 

 close, shallow punctures, clothed with long, sparse, pale, erect hairs; I 

 second sternite with large, elongate, usually separated punctures, 

 clothed with sparse, erect, pale hairs, and a thin fringe of silvery 

 hairs at the apical margin; sternites 3-5 with moderate, very close, 

 confluent punctures, clothed with sparse, erect, pale4iairs, and each 

 with a thin fringe of silvery hairs at the apical margin. 



Legs mahogany red, clothed with long, pale, erect hairs. 



H olotype. —F^mBi^, Comanche County, Kans., 1916 (R. H. 

 Beamer), in collection of University of Kansas. 



Paratypes.—Fem-SilQ, Mineola, Tex., July 19, 1906 (Bishopp and 

 Jones) ; female, Eock Island, Tex., June 18, 1922 (Grace O. Wiley). \ 

 Paratypes in collection of United States National Museum and 

 University of Minnesota. 



The paratypes are smaller than the type ; length, 9.5 mm. | 



This species is most closely related to higuttata Cockerell. It is at 

 once distinguished from quadriguttata by the presence of only two j 

 pale spots on the second tergite of the abdomen. It differs from ' 

 higuttata in having the posterior margin of the head truncate, the 

 postero-lateral tubercles very large and prominent, the brush of 

 thick hairs at the junction of the dorsal and posterior faces of 

 propodeum, and by the distinctly reflexed lateral margins of the 

 pygidium. Biguttata has an indication of a brush of hairs on the 

 propodeum but the hairs are very sparse, making it much less 

 prominent. The thorax of curticeps is noticeably longer and more 

 narrow than in quadnguttata. , 



i 



59. DASYMUTILLA NITmULA, new species 



Female. — Head black, the vertex sparsely clothed with golden 

 pubescence; thorax ferruginous; abdomen black, the second tergite 

 maculated with a pair of subapical pale yellow spots. Length, 13 mm. 



Head black, the vertex obscurely ferruginous ; the front and vertex 

 clothed with sparse, appressed, golden pubescence, and a few scattered : 

 erect hairs; mandibles acute at the apex, unidentate on the inner 

 margin; cephalic half of clypeus transversely concave, glabrous, , 

 impunctate ; caudal half of clypeus closely punctured ; clypeal fringe 

 thin, of long, dark hairs ; antennal scrobes not carinate above ; scape 

 coarsely and closely punctate, clothed with sparse, coarse hairs; first 



