LEONARD HASEMAN. 309 



Pericoma triincata Kincaid. 

 Pericoma truncnta Kincaid, Entomological News, X, p. 35 (1899). 

 '' Female.— MoA J brown, densely clothed with mixed white and dark brown 

 hair. Wiugs ovate, broadly rounded at the tip, not quite twice as long as broad ; 

 hair upon tiie veins principally dark brown, with a rather large patch of white 

 near the middle of the wing and its apex, fringe dark brown, on posterior mar- 

 gin as long as the width of three cells and with small patches of white hair alter- 

 nating with the brown tufts at the apices of the veins; bifurcations of the veins 

 equidistant from the base of the wing. Length of wing 4 mm. Legs brown, 

 clothed with brown hair and scales, interspersed with a few longer white hairs. 

 Antennae black, not quite as long as the width of the wings, 17-jointed ; joint 1 

 rather large, cylindrical ; joint 2 large, globose ; joints 3-16 fusiform, clothed with 

 scattered hairs; joint 17 minute; ventral plate longer than broad, broadly trun- 

 cate at the apex ; ovipositor yellow, long and slender, strongly curved." 



Hah. — VvL\o Alto, California. 



Pericoma ocellaris Meigen var. amerieana Kincaid. 

 Pericoma ocellaris var. amerieana Kincaid, Entom. News, XII, p. 194 (1901). 



"Female. — Length 2 mm. Body brown, clothed with brown hair, except upon 

 the dorsal arc of the thorax, which bears a dense vestiture of long white hair. 

 Wings ovate, more than twice as long as broad, apex bluntly rounded and termi- 

 nating close behind the end of the first simple vein ; anterior bifurcation a little 

 nearer the base of the wing than the posterior one. Vestiture of wings brown, 

 variegated with white as follows: A large patch near the base on the anterior 

 margin, a sinuous band crossing the wing from the end of the third longitudinal 

 vein to the end of the seventh, a small patch at the tips of the second, third and 

 fourth longitudinal veins. Fringe brown, variegated with white as follows: A 

 large patch near the base on the anterior margin, a small patch at tips of first to 

 third longitudinal veins, a patch on the posterior margin extending from the tip 

 of the fourth vein to the tip of the seventh, and a small patch at the end of the 

 ninth vein. Legs clothed with brown hair and scales, with several annulations 

 of white upon the tarsi. Antennte a little longer than the width of the wing, 

 16-jointed ; basal joint cylindrical, four times as long as thick ; second joint large, 

 globular ; third joint much smaller than second, ovate ; fourth to sixteenth joints 

 slender, fusiform, gradually diminishing in size; the joints clothed with scattered 

 hairs. Ventral plate shallowly emarginate at apex, terminating on each side in 

 a well marked lobe. Ovipositor straight, acutely pointed. 



''Male. — Antennae differing from those of the female in that the basal joint is 

 relatively much longer, forming about one-fourth the length of the entire organ, 

 and the third joint, which is oval, bears near its apex an oval scar, from which 

 arises a dense tuft of hair, the tuft being strongly bent in the middle, so as to 

 assume a sinuous appearance. Genitalia conspicuous. Inferior appendages 

 2-jointed ; basal joint stout, twice as long as broad ; distal joint nearly twice as 

 long as basal, slightly curved, tapering to apex, which bears a tuft of upwardly 

 projecting setae. Superior appendages not quite as long as inferior, 2-jointed ; 

 basal joint stout, cylindrical ; distal joint nearly straight, slender, about equal in 

 length to basal, tapering to a rather acute point." 



Hah. — Maine. 



TE.iNS. AM. ENT. SOC. XXXIII. SEPTEMBER. 1907. 



