FAM. EMPIDID/E 59 
Upper facets of cf eyes conspicuously larger than the lowermost; 
coryisqubpcti uA Merc nO rcu 2 nM C EE. 
5. Halteres, veins and wings whitish; abdomen sericeous, its hairs 
mS 5s d NI QE. cuo 4e d o IX. LACTRIPENNIS, DOV, Sp. (1). 
Halteresfuscousto black, wingsnotopalescent, veins yellow to black. . . . . . . . . . 6. 
6. Stigma distinct ; legs and halteres black; style distinct; proboscis 
DIorbDeebUe;stermopleuramore orlessshibiDg . . . 20.7. o. 0. oT 
Stigma obsolete; legs and halteres brownish, hind femora rarely 
ciliate below; proboscis and style minute; pleure almost wholly 
CUSUREHEEEI S petu t s cop cte abest cde d ML E MEE E n d 
7. Hind femora and tibiz thickened, the tibiae rounded at the knee and 
shortened, the femora not ciliate beneath; hairs of the abdomen 
and legs and some of the thoracic bristles whitish; abdomen 
MEMMIUS 5 S s 2 aec uou creo lxv AM. PRMORATA, oV; Sp. (a). 
Wings with a very light infumation, veins blackish, stigma distinct, discal cell one-third longer than the rather narrow 
second basal, its posterior veins reaching the margin, sections of the fourth vein proportioned, 0.7 : 0.3 : 1 : 1, of the fifth 
vein, 1 : 0.2 : 1 : 0.8, anal angle prominent, anal crossvein parallel with the hind margin, anal vein faint. 
Female. Eyes broadly separated on the front ; abdomen tapering, the last four segments short and shining. 
Numerous specimens from Mount Constitution, Vashon, Tacoma, Ilwaco, Sultan and Quilcene, Washington, May- 
July ; and Portola, California, April, the last received from Dr. J. M. Aldrich. 
(i) Anthalia lacteipennis, nov. sp. — Male. Length r.8 mm. Body black, very lightly dusted, the abdomen 
more cinereous, antenne and mouth-parts black, halteres whitish, wings and veins opalescent white, legs piceous. 
Eyes broadly contiguous on the front, the upper facets large, mouth-opening narrow, extending quite to the antennz, 
epistome shining, cheeks narrow ; antenna two-jointed, the outer joint large and broadly pyriform, scarcely longer 
than broad and subequal in length to the style ; proboscis projecting forward more than the length of the head, 
palpi slender and furnished with five setae; vertical bristles small. Thorax highly arched, two pairs of strong 
prescutellars, four scutellars, one humeral, one posthumeral, three notopleurals and one postalar, acrostichals weak ; 
pleure entirely pollinose. Abdomen with sparse long white hairs, pygidium minute, lateral pits distinct. Front 
tibie not noticeably swollen, extensor cilia of the hind femora short, flexor cilia setiform, metatarsi yellowish, Wings 
with parallel sides, costa yellow, other veins white, costal hairs black, no stigma, discal cell one-half longer than the 
narrow second basal, sections of the fourth vein proportioned o.4 : 0.2 : 1 : 1.4, of the fifth vein, 1.2:03 : 1 : 1.3, 
posterior veins weak but reaching the margin, anal crossvein almost recurved, vanishing, anal vein obsolete. 
Female. Eyes broadly separated by the shining front; discal cell longer, twice as long as the second basal, 
sections of the fourth vein, 0.4 : 0.15 : 1 : 1, of the fifth vein, 1 : 0.15 : 1 : 1 ; terminal segments of the abdomen 
short and shining. 
Numerous specimens ; type from Moscow Mountain, Idaho, frequenting flowers of Pentstemon on the summit 
(4900 feet altitude), July 3, 1911. Paratypes from the same place and from Bovill and Waha, Idaho ; Pullman, 
Almota, Glenwood, Husum, Blewett, Seattle, Tacoma, Vashon, South Bend, Nahcotta and Ilwaco, Washington ; 
Kaslo, British Columbia (U. S. N. M.); Yosemite Valley (Cresson), Humbolt Co. (H. S. Barber) and Santa Cruz 
Mountains (Doane), California. 
(2) Anthalia femorata, nov. sp. — Male. Length 2.3 mm. Black, subshining, bristles of lower occiput, 
sides of thorax, abdomen, coxe and legs whitish, hind legs robust, the tibie shortened, abdomen mainly shining and 
devoid of pollen. Eyes broadly contiguous on the front, the upper facets large, face widely excavated up to the 
antenne, proboscis directed forward, but scarcely protruding from the oral opening, palpi with a few long sete, 
ocellar bristles stout. Mesonotum lightly dusted, discal setule pale, four pale humerals, fiveor six pale posthumerals, 
three black and two pale notopleurals, two black dorsocentrals and six black scutellar bristles; pleurz pollinose 
except most of the sterno- and mesopleure. Venter and sides of the tergites shining, the upper side of the abdomen 
lightly pollinose, leaving however a circular shining spot at the base of each hair; pygidium scarcely longer than the 
preceding segment, broad ^ Anterior knees narrowly yellow, front tibiae not swollen, hind femora much thicker 
than the others, highly shining, not ciliate below, but above with a row of short white cilia which are two-thirds as 
long as the thickness of the femur, hind tibiz three-fourths as long as their femora, likewise incrassate, shining 
except as the tip, strongly curved at the knee. Halteres black, calypteres blackish and fringed with dusky hairs. 
Wings nearly hyaline, broader at the base, veins blackish, stigma distinct, discal cell blunt, one-half longer than the 
rather narrow second basal which is subequal in length to the first, posterior veins complete, sections of the fourth 
vein proportioned 0.6 : 0.3 : 1 : 1, of the fifth vein, 1.3 : 0.3 : 1 : 0.9. 
Eight specimens : Kettle Falls, Washington, May 3, 1:912, and Moscow Mt., Idaho, June and July. In the 
structure of the hind legs this species suggests CEdalea, but there are no spines and the knee is not angulate. The 
general habitus, with short thick body, is like the species of AztAalia. 
