402 Mr. T. D. A. Cockeiell — Descriptions and 



Nomia {Meganomia, subg. n.) binghami, sp. n. 



? . — Length about 15 mm. ; expanse sliglitlj over 30. 

 Head and thorax black, rather sparsely punctured ; a 

 small spot before each lateral ocellus, sides of face broadly 

 (obliquely truncate above, at about half distance between 

 ocelli and antennse, the lowei- side of the truncation on 

 orbit), a large supraclypeal spot, and clypeus (except a black 

 TT above) pale yellow ; basal half of mandibles testaceous ; 

 scape yellow in front; flagellum, except at base, ferruginous 

 beneath ; upper margin of prothorax (interrupted in middle), 

 tubercles, ^*^' * — ■^ formed marks on anterior margin of 

 mesothorax, most of hind half of scutellum (more in sub- 

 lateral region), postscutellum, area of metathorax (narrowly 

 interrupted in middle), and two spots on hind face of meta- 

 thorax, yellow, tegulge partly yellow, partly ferruginous. 

 Wings slightly dusky, yellowish ; nervures ferruginous; no 

 stigma, or a mere vestige. Legs dark reddish, anterior and 

 middle knees yellow ; anterior tibi^ broadly yellow at base 

 and apex, the yellow connected by a line ; middle tibiai 

 yellow at apex ; abdomen broad, ferruginous, with five very 

 broad bright yellow bands, each broadly subemarginate sub- 

 laterally by a dark elongate spot. In build and size it 

 resembles Stenotritus elegans, Sm., but the hind spur is 

 minutely ciliate (with long coarse teeth in S. elegans) , and 

 the venation is entirely different. The middle spur is 

 normal. 



The following structural characters will define the new 

 subgenus Meganomia : — Tongue short, pointed; maxillary 

 palpi with six short joints; no facial fovese; mandibles 

 simple; ocelli large, in a low triangle; inner orbits practi- 

 cally parallel, not in the least eniarginate; flagellum short 

 and thick, first joint about or nearly as long as next three 

 together, apical joint rounded ; tegulge of moderate size ; 

 scutellum with a fine longitudinal ridge; claws very strongly 

 cleft; no pulvillus (at least on front pair) ; hind trochanters 

 bulging behind ; no floccus at base of hind legs ; a large 

 scopa on hind tibi« and tarsus, the white hairs merely 

 spinulose; pygidial plate very broad, broadly rounded (sub- 

 truncate) at apex ; marginal cell with rounded apex not on 

 costa, and a slight appendiculation ; first s.m. at least as 

 long as second and third combined ; second s.m. not far from 

 square, receiving first r. n. a little before end of first third ; 

 third s.m. nearly as broad above as second, and receiving the 

 second r. n. a short distance beyond middle ; b. n. going a 

 short distance basad of t.-m. : t.-m. of hind wings vertical, 



