87 



Distribution. — San Juan and Orcas Islands, Washington 

 (Melander); Eureka, California (H. S. Barber); Capens, Maine 

 (C. W. Johnson). 



Type.— Mt. Constitution, Washington, May 17, 1910. 



Platypalpus sutor, sp. nov. 



Length 2.5 mm. Mesonotum moderately cinereous pollinose on a black 

 ground, bristles yellow, legs including the coxae yellow, tibial spur large. Front 

 cinereous, slightly broadening above, face half as wide as the front, white, 

 epistome shining black; palpi short, oval, blackish inside, white pruinose 

 outside, with two apical setae; antennae black, the basal joint minute, the third 

 joint ovate, one-half longer than broad and one-third as long as the arista. 

 Setulae of the occiput and of the mesonotum rather long but sparse, two pairs 

 of dorso-centrals; pleurae whitish pruinose, sternopleural glabrous space large, 

 center of the mesopleurae thinly coated; abdomen shining black, pygidium 

 large. Front femora ciliate beneath, middle femora sparsely ciliate in front 

 and setose in back, tarsi weakly annulate. Veins brownish, costa not thick- 

 ened, its second, third and fourth sections proportioned 4: 2.6:1; third vein 

 ending before the tip of the wing, nearly straight, the fourth vein subparallel 

 with it, cross-veins nearly transverse and nearly meeting, located before the 

 middle of the wing; sections of the fifth vein proportioned 0.6: 0.7:1; marginal 

 cilia as long as the anterior cross- vein. 



7^2/396.— Woodland, Washington, May 23, 1910. 



Paratypes, sixteen, from Everett, Lynden, Potlatch, Quilcene, 

 Sultan and Tacoma, Washington, July and August (Melander). 



Variation. — Upper side of the front and hind femora except 

 the base and apex, brown, British Columbia (U, S. National 

 Museum). 



Variation. — Last two sections of the fifth vein subequal. 

 New York; Chester, Massachusetts. 



Platypalpus versutus, sp. nov. 



9 . — Length 2 mm. Body yellow, the thorax overlain with white pollen; 

 the abdomen with a slender blackish median line extending over the first five 

 segments. Head black in ground color, white-pollinose, the face yellow and 

 overlain with dense silvery pubescence; palpi yellow with white pubescence, 

 measuring one-third as long as the testaceous proboscis, hairs and bristles of 

 the head entirely white; antennae light yellow, the third joint ovate, the arista 

 yellowish,, a little longer than the third joint. Thoracic bristles yellow, rather 

 long, one humeral, one notopleural, one supra-alar, two dorso-central, two 

 scutellar bristles; sternopleurae with a rather small glabrous space. Legs 

 entirely yellow, only the claws and the tip of the small tibial spur black; middle 

 femora ciliate with nine yellow bristles. Veins nearly colorless, the second, 

 third and fourth sections of the costa proportioned 3.5: 2.5:1; third and fourth 

 veins parallel, cross-veins separated by the length of the anterior, the posterior 

 rather oblique; anal cross- vein nearly perpendicular, base of anal vein wanting, 

 the outer part weak. 



Type. — Falls Church, Virginia, June, collected by Nathan 

 Banks. 



Paratype. — Male, Mount Equinox, Vermont (C. W. Johnson) ; 

 has blackish open genitalia and lacks the abdominal vitta. 

 Paratype, female, Ithaca, New York (Melander) also lacks the 

 abdominal stripe. 



