94 INSECUTOR INSCITI^ MENSTRUUS 



long to this genus so far as the description goes. It is distinct 

 from the present species, however, on its ferruginous antennae, 

 yellowish wings, and differently-marked abdomen. Wulp's 

 Biologia C.-A. species (pp. 135-126) evidently do not belong 

 here. 



Apinocyptera, new genus. 



Genotype, Apinocyptera signata Tov^rnsend, new species. 



Differs from Odontocyptera as follows : Female. Second 

 abdominal segment broadly beveled off posteriorly on its ventral 

 face at an angle of about 45 degrees, after the manner of 

 Apinops, the arcuate edge of the oblique surface thus formed 

 being thickly studded with short spines. Ventral plates two 

 to four not showing. Ventral aspect of third segment flat- 

 tened to the level of hind margin of oblique area of second, 

 the inner edges of tergal sclerites not flared but meeting. In 

 Odontocyptera the inner edges of tergal sclerites of third seg- 

 ment are long and flared V-like with the opening behind, form- 

 ing sides of a deep ventral cavity for reception of hypoygium. 

 Hypopygial hooks proportionately longer than in latter genus, 

 the same delicate chitinous piercer present. 



Apinocyptera signata, new species. 



Length of body, 11 mm. ; of wing, 7.5 mm. One female, 

 Gualan, Guatemala, on flowers of No. 9 (W. P. Cockerell). 



Head silvery-white, the parafrontals with a faint brassy 

 tinge. Frontalia brown, rufous on edges. First two antenna! 

 joints and base of third rufous, rest of third and all of arista 

 black. Thorax blackish, thinly silvered ; two narrow inner, 

 two heavy outer vittse. Scutellum and first abdominal s^ment 

 concolorous with thorax, but the segment without bloom. Sec- 

 ond segment brown or blackish, with broad semicircular rufous 

 area on each side anteriorly, the two areas of rufous narrowly 

 separated by black both above and below on median line. Rest 

 of abdomen wholly dark rufous ; the rufous areas of second 

 segment, nearly all of third, and anterior part of fourth with 

 silvery bloom. Legs black, the tibiae brownish. Wings smoky- 



