BY ROWLAND E. TURNER. 221 



finely jAinctured. Head 6ne]y rugulose on the front, shallowly 

 punctured on the occiput, a transverse slightly arched carina 

 between the eyes, and a carina broadly rounded at the apex 

 between the antennae. Thorax strongly punctured, most sparsely 

 on the disc of the mesonotum. Scutellum broadly rounded at 

 the apex. Median segment truncate posteriorly, rather sparsel}^ 

 punctured on the basal portion, with a small, smooth, shining 

 mark at the extreme base, densely and tinel}'' punctured at the 

 apex, Abdomen sparsel}'- and shallowl}'- punctured, a transverse 

 row of very fine punctures, emarginate in the middle, near the 

 apex of each segment. Epipygium rugose, the extreme apex 

 smooth with a median carina, not reaching tlie apical margin. 

 Hypopygium strongly tridentate, carinate beneath. Entirely 

 shining black, the pubescence on the sides of the clypeus grey, 

 on the centre of the ci3'peus and head golden. Wings dark 

 violet-blue, fusco-hyaline at the apex, the nervures black. 

 Length 1-1 mm. 



9. Head subquadrate, slightly longer than broad, rounded at 

 the posterior angles, but not so much produced posteriorly as in 

 R. fuscipennis', head i)unctiired, densely just above the base of 

 the antennae, sparsely elsewhere. A short median sulca on the 

 front between the antennae. The lateral suktie on the head 

 reaching from the eye to the occiput converge more closely on 

 the occiput than in R. fascipennis. Thorax and median segment 

 shining, sparsely punctured. Abdomen shining, finely punctured, 

 the first segment concavely truncate anteriorly, and with a 

 minute tubercle at the base beneath. Epi[)ygium with a narrow 

 shining median elevation, the margins of which form raised 

 carinas, the sides of which near the apex are clothed with a few 

 long pale fulvous hairs. Shining black, the mandibles fusco- 

 ferruginous; thorax, median segment and legs bright ferruginous- 

 red, the apex of the pygidium testaceous. Length 9 mm. 



Hah. — Cairns, Q.(cJ2 in cop.). 



Very near R. fascipennis, from which it differs most markedly 

 in the shape of the median segment in the male and of the first 

 abdominal segment in the female. 

 17 



