202 ]\Ir. T. D. A. Cockerell on ncio 



mlnufely rugose, with scattered larn:e puncture^ ; tegiilaj 

 exceedingly dark brown : wings liyaline, with only a faint 

 brownish tint ; nervures dark reddish brown, palei' basally; 

 marginal and third submarginal colls each with a short 

 a])j)cndicnlar nervnre ; third submarginal cell longer on 

 marginal than on third discoidal; second submarginal cell 

 considerably narrowed above, receiving the first recurrent 

 rervure at its middle; basal nervure going a considerable 

 distance basad of transverso-medial : mesothorax minutely 

 roughened, with a broad but thinly hairy band across the 

 anterior part, sending two tongues backwards ; scutellum 

 strongly bilubed, the lateral teeth short, black ; pleura 

 densely punctured, with a large circular bare patch : abdomen 

 6-banded, the first segment covered with hair, except the 

 usual median patch, which is pointed but not greatly pro- 

 longed laterally ; second segment with the lateral upward 

 extensions of the band forming right angles, as in T. nigricepa 

 (Smith) ; venter Avith pale hair-bands on the second and 

 ihird segments and a coarse curled purplish-sooty fringe on 

 the fourth. 



JJah. Wyoming ; no other particulars known. Received 

 from Mr. John H. Lovell. 



Superficially like T. concolor (Rob.), but the markings are 

 not so yellow, and the patterns of the mesothorax and first 

 abdominal segment are quite different; the face also is 

 broader below, with the hair white (pale golden in concolor), 

 and the sides of the vertex are densely punctured and dull, 

 without any shining surface showing between the punctures, 

 as it does in concolor. From T. donatus (Smith), which it 

 rather a])j)roaches in the colour of its markings, it differs at 

 once in the pattern of the thorax and abdomen. From 

 T. nigriceps (Smith), which it approaches closely in pattern, 

 it differs by its smaller size and wings not at all violaceous. 



Triepeolus callopus, sp. n. 



5 . — Length 10 mm. or slightly less. 



Black, with the usual markings of pale ochraceous pubes- 

 cence ; legs bright ferruginous ; basal three fifths of man- 

 dibles, labrum, and anterior margin of clypeus bright 

 ferruginous ; clypeus minutely roughened, with scarcely 

 indicated scattered punctures ; a prominent keel between the 

 antennse ; scape dark ; flagellum ferruginous, but much 

 blackened, especially above, the first joint and base of second 

 brighter ; mesothorax nude, except for two stripes of pubes- 

 cence on the anterior jiart and a patch at each posterior 



