88 : DIPTERA 
TABLE FOR THE IDENTIFICATION OF MALES OF MICROPHORELLA 
- Third antennal joint long and cylindrical; anal vein completely 
wanting ; auxiliary vein ending opposite the end of the discal cell. M. Pgxcox, Loew. 
Third joint of the antennze conical or pyriform ; base of the anal vein ; 
indicated as a fold ; auxiliary vein very short, ending before the 
middle of the discal cell . . . . : : MM ML A uS 
2. Hind trochanters with a spine-tipped tablet hind binoón dé 
ciliate with bristles beneath; third joint of the antennz more or 
less conical . . . ^ SOR RSUeU: DANS SP c Ie 
Hind trochanters not toberdiinis: hind judicis with ibo or sparse 
. cilia; third antennal joint attenuated at the end; ventral processes : 
of the pygidium yellowish-brown . . . . cie Apis AmUS Maru Mec 
3. Tubercle of the hind trochanters as long as the tiu pH and clavate ; ] 
hind tibize with erect hairs; ventral processes of the pygidium 
yellowish brown. . -. M. TUBERIFERA, nov. sp. (1). 
Tubercle of the hind ieoclianters sai ask crlipdiicd: bett of the 
hind tibize not unusual; ventral processes of the pygidium black. M. ACROPTERA, nov. sp. (2). 
4. Front tarsi with white sole, hind tarsi compressed, the joints lobate : 
above; hind femora with five long flexor bristles; third joint of  ' 
the antennz densely pubescent beneath... . . . . . . . M.omNarIPES, nov. sp. (3). 
(1) Microphorella tubifera, nov. sp. — Male. Length 2 mm. Opaque black with a brownish tinge. Outer — 
antennal joint elongate oval, one-half longer than wide, with very short pubescence, the arista nearly twice aslong Six —— 
strong dorsocentrals, the lateral setulae reduced, scutellum with a minute lateral bristle. Abdomen opaque, pygidium large 
and bulbous, underneath with relatively large brownish processes. Legs hairy, hind trochanters with a long trumpet- 
shaped tubercle bearing a blunt spine in front, front femora not ciliate, hind femora with fifteen moderate bristles along the 
antero-flexor edge, middle tibi tipped with several bristles, hairs of the hind tibiae outstanding, tarsi simple but rather 
stout, the joints decreasing in length but the last joint as long as the third, Wings narrow, with a strong brownish tinge, 
first vein ending opposite the apex of the discal cell, sections of the fourth vein proportioned 3 : 3 : 10 : 13, of the fifth vein 
2 : 1, anal vein short but strong. 
Female. Similar except for the blunt abdomen, absence of the tubercle of the trochanters and lack of the femoral | 
bristles, 
One specimen of each sex : Palo Alto, California, March, 1895, received from Professor R. W. Doane. 
(2) Microphorella acroptera, nov. sp. — Male. Length :.5mm. Opaque lead-black, the abdomen subshining. 
Third joint of the antennze broadly oval, with an apical cylindrical process one-third the length of the basal portion, arista 
less than twice as long as the third joint. Abdomen with almost a brassy tinge, pygidium rather shining, large and inflated, 
its ventral processes entirely black. Hind trochanters with a short spine-tipped tubercle, anterior femora not ciliate, hind 
femora with fourteen bristles which are longer than the diameter of the femur, middle tibiz with several minute apical 
bristles, tarsi simple, the joints decreasing in length but thelasttwo subequal. Wings with very light infuscation, two and 
two-thirds times as long as broad, sections of the fourth vein proportioned 3 : 3 : 10 : 13, of the fifth vein 1 : 0.6, anal vein 
practically wanting. 
Female. Abdomen with bristly blunt termination, femora not ciliate, trochanters not tuberculate, 
Type from Pullman, Washington. May 3o, 1913. The species occurs also in California. I have received specimens 
from San Jose and from Berkeley Hills, the latter from E. T. Cresson, Jr. 
(3) Miorophorella ornatipes, nov. sp. — Male. Length 1.75 mm. Black, uniformly coated with opaque olive 
gray pollen. Third joint of the antennz densely pubescent with yellow hairs, pyriform, two-thirds longer than broad, 
constricted on the outer two-thirds, the arista longer than the third joint ; palpi with a long brown hair. Sixstrong dorso- 
centrals, and two intra-alars besides the usual other bristles. Fifth, sixth and seventh segments of the abdomen 
ively smaller, the pygidium lying to the right of these segments and provided underneath with many short filamentous 
yellow processes, Front femora with about ten cilia beneath, front tibi enlarged apically, almost trumpet-like, front 
tarsi yellowish within, the metatarsi as long as the remainder of the tarsus, slender, sinuous, the last four joints almost equal 
in length, the fifth joint flattened ; hind trochanters not spined, hind femora with about seven long flexor bristles, hind tarsi 
compressed, the metatarsus slender and nearly as long as the remainder of the tarsus, theother joints subequal and lobosely 
carinate above, Wings with slight infumation, no stigma, first vein terminating opposite the end of the discal cell. 
Female. Abdomen with a blunt tip, legs simple. 
One specimen of each sex : Kendrick, Idaho, received from Dr. J. M. Aldrich. 
