410 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59. 



tergites separated by twice their width) punctures, which become 

 closer on the apical tergites, so on the terminal one they are contig- 

 uous; apical segment truncate, with sharp, rather short spines 

 laterally. Black; body with short, appressed silvery pile which is 

 especially dense on head, propodeum and anterior face of first tergite; 

 mandibles, scape, pedicellum, basal four joints of flagellum beneath, 

 and tegulae, dark rufous; legs, beyond coxae, clear rufous; dorsal 

 margin of pronotum, anterior margin of scutellum, broad apical bands 

 on first two tergites and lateral spots on third and fourth, yellow; 

 wings dusky hyaline, venation blackish. 



Type locality. — Granjeno (about 10 miles west of Santa Rosa) 

 Texas. 



Type.— C&t. No. 23458, U.S.N.M. 



Described from a single male collected May 20, 1895, by C. H. T. 

 Townsend. 



Dedicated to W. J. Fox in recognition of his useful work on the 

 wasps of this genus. 



NYSSON (BRACHYSTEGUS) BARBERI, new species. 



Allied to Nysson (Brachystegus) gagates Bradley, but differs from 

 the description in the truncate apical joint of the antenna, different 

 sculpture of mesonotum and abdomen and presence of tubercles 

 between the ocelli. 



Male. — Length, 6 mm. Head with rather large, close punctures 

 which are closer on the front, on the vertex in the interspaces are 

 smaller, somewhat inconspicuous punctures; a low, elongate tubercle 

 on inner margins of each lateral ocellus; third and fourth antennal 

 joints subequal, the apical joint distinctly longer than the preceding 

 and obliquely truncate; dorsal margin of pronotum rectangular, the 

 lateral anterior angles subacute; mesoscutum with coarse, nearly 

 confluent punctures, and with smaller punctures in the interspaces; 

 scutellum not margined, punctured like the scutum but more 

 coarsely so; dorsal surface of propodeum with regular radiating 

 striae; the lateral angles acute but without a prominent spinelike 

 tooth; posterior face of the propodeum with prominent median 

 carinae, and with transverse rugae; abdomen with distinct, rather 

 large punctures which on the two basal segments are separated by 

 about twice their width but on the apical segments become coarser 

 and contiguous so the two apical segments are striato-punctate; second 

 sternite punctured like the tergite except the punctures are more 

 widely separated. Black, rather densely clothed with silvery pile; 

 first three tergites with elongate, lateral, pale yellow spots on their 

 apical margins, those on the first the largest and separated by about 

 their length; wings dusky hyaline, slightly clouded along anterior 

 margin of radial cell, venation blackish. 



