106 DIPTERA 
Posterior prong of the dorsal valve minute; lateral bristles of the 
thorax jf abundant; scutellum O' with about twenty bristles; 
flexor cilia of the hind tibie c longer than the diameter of the 
femur; third joint of antenne Q four times as long as wide; 
palpi Q pointed . . . Au Lies ; - * ^. -A. HIRSUTUS, nov. sp. (1). 
5. Q palpi very slender, longer din the head; Tu iacit IV and 
legs including the coxe yellow; sections of the fifth vein 5 : 2; 
thorax shining. . . . : n 20 05 o À. LONGIPALPIS, nov. sp. (2). 
Palpi much shorter than the leid: pue of the huie TENE MOV a SU od an dt. UNS 
6. Thorax shining; coxz and femora black or brown; sections of the : j : 
fifth vein 5:2;sügmadisinct. -. . ... . - . ... . s» A. NUPTUS, BOX, Sp. (9). 
* 
(1) Anthepiscopus hirsutus, nov. sp. — Male. Length 3.2 mm. Entirely black including the legs, halteres 
and calypteres, almost opaque. Upper facets slightly enlarged ; third joint of the antennae five times as long as broad, 
slightly tapering, blunt at the end, style very short, the basal segment square and one-üifth as wide as the base of the third 
joint; proboscis one-half longer than the head, palpi linear, elongate, two-thirds as long as the proboscis, loosely provided 
with long black hairs; hairs of the occiput rather abundant. Thorax showing a blackish gray median vitta when viewed 
from in front, its bristles long and numerous, about eight humerals, three posthumerals, ten notopleurals, five supra-alars, 
twenty scutellars, the acrostichals biseriate. Abdomen with moderate long fine blackish hairs; pygidium of moderate size, 
dorsal valves with a minute prong at the middle of the posterior edge, penis rectangularly bent at the middle, the apical part. 
curled on itself. Hairs of the legs black, femoral hairs long, abundant on the middle femora, hind femora ciliate, the 
flexor hairs nearly twice as long as the diameter of the femur and fifteen in number. Wings nearly hyaline, stigma 
distinct, veins black, discal cell blunt, three times as jue as beond, sections of the fourth vein proportioned 0.6 : 0.4 : 1 : 1.6, 
of the fifth vein 5 : 3. 
Female. Subshining, lightly dusted; hairs and bristles reduced in size and number; facets uniform ; palpi 
shortened. Five humerals, five notopleurals, supra-alars indistinct ; femora not ciliate, 
Type from Chehalis, Washington, March 19, 1911. Paratypes from Chehalis and Seattle, Washington, March 13 
to 24 ; seven specimens, taken on Salix blossoms by the author. 
(2; Anthepiscopus lengipalpis, nov. sp. — Female. Length2.5 mm. Piceous black, shining, legs, halteres 
and root of the wings yellow; bristles black, Head shining, two fronto-orbitals; third joint of the antenns thick but 
bluntly tapering, about three times as long as broad and five times as long as the style; proboscis nearly twice as long as 
the head, palpi linear, one-half longer than the third joint of the antennz and two-thirds as long as the proboscis; occipital 
hairs sparse but long. Dorsocentral and acrostichal setulz sparse long and fine, the latter biseriate, two small posthume- 
rals, three long and several short notopleurals, ten scutellar bristles. Abdomen and its hairs brownish. Legs slender, . 
yellow, including the coxae, but the tips of the tarsi darkened, the hairs yellow. "Wings with a cinereous tinge, no stigma, 
veins narrow and brcwnish yellow, discal cell two and a half times as long as broad, posterior crossvein 'transverse, 
sections of the fourth vein proportioned 0.6: 0.3 : 1 : 1.3, of the fifth vein 5: 2, anal vein very weak. 
One specimen, Arlington, Washington, May 21, 1908, found on a window (Melander). 
(3) Anthepiscopus nuptus, nov. sp, — Male. Length 3.8 mm. Shining, head and thorax very lightly pollinose, 
entirely black including the halteres and calypteres, the knees and the anterior femora and tibig& brownish. Upper facets 
moderately enlarged ; third joint of the antennze three and a half times as long as the width at the base, narrowed beyond 
the basal fourth, tapering only at the tip, the basal joint of the style oblong, one-third as long as the width of the base of 
the third antennal joint; proboscis one-half longer than the head, palpi elongate, linear, the hairs sparse. Thoracic 
bristles long, but the hairs fine and short, about five small humerals, five long notopleurals, twelve scutellars, the dorso- 
centrals not differentiated exceptiny the posterior pair, irregularly biseriate, acrostichals irregularly quadriseriate. 
Hairs of the abdomen long, fine and abundant; pygidium moderately large, the lateral valves circular except for their 
broad posterior process, dorsal valves short, chitinized, the posterior prong short and placed rather near the tip, penis 
slender, only gently sinuous. Hairs of the legs short, anterior legs broadly fuscous about the knees, middle femora with 
sparse hairs, hind femora ciliate below only toward the knee, the hairs there about as long as the diameter of the femur. 
Wings with a light infumation, stigma distinct, veins blackish, discal cel] very blunt, two and a half times as long as broad, 
sections of the fourth vein proportioned 2.1 : 1 : 3: 4.5, of the fifth vein 2 : 1. 
Female. Pollen coating of the thorax a little more evident; facets uniform; palpi shortened ; bristles of the thorax 
short and less numerous, there being but three distinct notopleurals, ten scutellars, etc.; hairs of the abdomen short ; 
fuscous color of the legs more extended, no ciliation; base of the halteres and calypteres fuscous; wings subhyaline, 
veins brown. 
Numerous specimens of each sex from flowers of Ribes; Tacoma, Washington, April 12, 1913. Three females also 
from Olga, Washington, May 18, 1910. 
