SYMENOPTEROUS family STEPSANIDyJi. 765 



is polished smooth ; mesonotum anteriorly and laterally coai'sely 

 transrugose, posteriorly centrally smooth ; impressed part of 

 metapleurse striate; median segment rugulose, especially laterally, 

 the umbilical punctures do not extend to the sides; stigmal sulcus 

 obsolete in front. Petiole slender, transrugose, longer than 

 remaining segments ; second basally transrugose, slightly acicu- 

 late beyond middle; third basally finely transreticulate, otherwise 

 finely aciculate ; fourth transverse, basal half transreticulate, 

 apical half polished. Terebra one-third longer than body, its 

 black apex more than half as broad as the subapical white band. 

 Hind legs with coxae polished smooth externally and beneath 

 except towards apex, furnished with a few transverse piliferous 

 granules, the usual close striation only visible above and inside ; 

 femora apically above and externally iinely reticulate ; tibiee 

 compressed to beyond middle ; metatarsus about four times as 

 long as broad. Fore wing not reaching apex of second segment. 



Black ; head except apices of mandibles, two ba,sal antennal 

 joints, and hind metatai'sus red. Wings strongly infumate, 

 stigma and nervures black, the former basally pale, radix and 

 tegulae black. 



Length 18"5 mm. ; terebi-a 24 mm. 



Habitat: Cururuzinho, Rio Autaz, Brazil ; 20.x. 1914. One $ 

 only. 



Very similar to S. angidicollis Roman, differing especially in 

 the sculpture of the short neck, the chiefly smooth coxse and 

 darker wings, as well as in minor details. 



4. PERUANUS Enderl. 



Hemistephanus 2)et'-ucinus Enderlein (4), p. 302, $ ; Roman (2), 

 p. 7, ? J . 



§ c? . Head rather large ; frons transrugose, straightly in 

 front, arcuately behind. All five frontal tubercles well developed, 

 the anterior one produced into a carina in front. Vertex and 

 occiput arcuate rugose, posteriorly smooth, without central 

 impression ; posterior margin of head broad and translucent. 

 Second flagellar joint about two and a half times as long as first : 

 third about as long as first and second together. Pronotum 

 elongate, polished smooth, with a few punctures on semiannular 

 and a strong apical carina. Mesonotum anteriorly with a median 

 row of punctures, on each side of which is a smooth space, 

 bounded by two divergent rows of punctures, outside of which 

 are four strong rugosities, dorsally smooth, with large diffuse 

 punctures. Scutellum smooth. Mesopleurae coarsely and 

 diffusely granulate rugose, separated from the median segment 

 by a wavy longitudinal carina. Median segment with large and 

 small shallow punctures on a partly rugose punctate ground, a 

 short longitudinal impression before spiracles, latei^ally indistinctly 

 rugose, anterior lateral angles smooth polished. Petiole basally 

 finely transrugose, apex broadly smooth, longer than remainder 



