64 INSECUTOR INSCITI^ MENSTRUUS 



terior two-thirds of each parafrontal except the narrow inner 

 margin. Antennae and palpi black; occiput silvery, with yel- 

 lowish-white beard. Mesoscutum showing four broad black 

 and nearly equal vittae, leaving five nearly equal silvery vittae, 

 of which the middle one shows a decided yellow shade behind 

 the suture; pleura very faintly silvery, showing principally 

 as a spot on the front half of the pteropleura, another spot 

 immediately below on the bristled area of the sternopleura, 

 both of these with a faint golden shade in some lights, and 

 a white fleck in front of the uppermost hypopleural bristles ; 

 also a large silvery spot on the mesopleura, whose lower pos- 

 terior portion is deeply golden ; humeri silvery ; scutellum tes- 

 taceous, blackish at lateral angles, faintly silvery. Abdomen 

 rather shining on last two segments and middle of second, 

 showing faintly silvery on first two segments except middle ; 

 narrow median stripe of dull golden pollen on second and 

 third segments, four flecks of golden pollen on front border 

 of third segment, four flecks of golden on front border of 

 anal segment and a fifth rust-gold fleck on extreme tip ; the 

 flecks of third segment change to silvery in some lights and 

 spread over all of segment except middle. Venter largely 

 shining, silvery on first segment with golden anterior margins 

 or flecks on the other segments. Legs black, the femora and 

 tibiae with a faint silvery bloom on the outside. Wings clear, 

 the veins yellowish except apical and hind crossveins ; extreme 

 base faintly tinged with yellowish. Tegulae white, narrowly 

 bordered with pale yellowish. 



Holotype, No. 19415, U. S. Nat. Mus. 



Dolichocnephalia, new genus. 



Genotype, Dolichocnephalia puna Townsend, new species. 



Dolichocephalic type of the Spallanzaniine group. Head 

 much elongated, the para facials but little less than eye-width. 

 Front tarsi of female noticeably widened. Claws of male 

 greatly elongated, especially front and middle ones which are 

 far longer than last tarsal joint, being sometimes nearly twice 

 as long; the hind ones shorter. Apical cell open, or rarely 

 closed in margin. Last section of fifth vein nearly or quite 



