40 DIPTERA 
rior cell somewhat narrowed in the margin; body color often yellow, wings immaculate except for the 
stigma. 
Tyne species : E. ferruginea, Walker. 
Harfamerus, Bigot. Hind femora of the male bearing strong teeth or tubercles beneath from each 
of which extends a stout spine, hind tibiz of the male curved and tuberculate; anterior tibize sometimes 
bearing long medial bristles; third and fourth veins converging, the first posterior cell somewhat narrowed 
in the margin; wings immaculate except for the stigma. The species that lack the dorsocentral, 
scutellar and tibial bristles havea broad abdomen. They may ultimately be segregated asa distinctgenus. 
Type species : H. signatus, Bigot. 
Geographical distribution. 
SuBGENUS SYNECHES, S. STR. 
A 
I. S. albonotatus, Loew, Berl. Ent. Zeitsch. Vol. 6, p. 195 : Cent. 2, E. United States. 
No. 18 (1862); Coquillett, Proc. U. S. Mus. Vol. 18, p. 436 (1895); 
Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 252 (1902). 
2. S. annulipes, Bezzi, Nova Acta Akad. Naturf. Halle, Vol.91, p. 316(1909). Bolivia. 
3. S. armatus, nov. sp. (1). Philippine Islands. 
4. S. ater, nov. sp. (2). Pennsylvania. 
5. S. baryflerus, nov. sp. (3). Costa Rica. 
(1) Syneches armatus, nov. sp. — Male. Length 4.5 mm. Head flattened, upper facets very large ; base ot 
antennae yellow, last joint ovate, blackish, the arista three times antennal length; mouthparts testaceous ; occiput and hairs 
black, lower portion lightly dusted. Thorax black, shining, more or less brownish on humeri and in front of posterior 
callosities, bristles and sparse hairs black, one long thin dorsocentral, scutelium with a pair of fine apical bristles and a. 
few marginal hairs ; pleurze mostly shining black, somewhat piceous under wings. Abdomen slender, flattened, basal half 
of second segment yellow, third segment yellowish at base, remainder of abdomen black with purple tinge, venter yellowish., 
hairs of basal half of abdomen pale, of apical half black, genitalia small, globular, the apex appearing forcipate. Coxa 
and femora except anterior knees black or blackish, remainder of anterior legs and hind tarsi except last joint yellow, hind 
tibiz black, tibia black, pulvilli pale, hairs and bristles concolorous with integument, front tibiz with a long flexor seta 
at basal two-fifths, middle tibize with a very long seta at basal two-fifths of both inner and outer sides and another at apex, 
hind femora stout, as long as their tibia and metatarsus together, theouter inferior face with seven stout spines arising from 
small tubercles, the ventral face with four smaller spines, flexor face of hind tibize denticulate. Halteres with yellow stem 
and black knob. Wings nearly hyaline, apex smoky, veins coarse and blackish, root of fourth vein and anal vein faint, 
stigma large, black, filling the wide end of the marginal cell abruptly limited opposite posterior crossvein, third and 
fourth veins parallel, discal cell rather large, sections of fifth vein 1 : 0.6. 
Female. Similar to male. 
Mt. Makling, Luzon, C, F. Baker, fourteen specimens. Additional specimens were included in the sending 
but were destroyed by a dermestid larva during transit, 
(2) Syneches ater, nov. sp. — Male. Length 3.5 mm. Black, velutinous, only the proboscis, knees narrowly, 
extreme tips of the tibize and base of the anterior tarsi brownish- yellow, and the legs a little shining. Wings heavily infu- 
mated, the costal and marginal cells even darker, marginal cell as broad as the submarginal opposite the end of the first 
vein, third and fourth veins parallel beyond the discal cell. Thorax strongly convex, scutellum with about ten marginal 
hairs. Hif femora slender, pubescent, not spinose but with two long hair-like bristles below, hind tibize closely pubescent. 
The insect has the form and proportions of fAthía. 
A single specimen : Hazleton, Pennsylvania, received from Dr, Dietz, who collected it June 28, 1912. The species 
is readily recognizable by its dark body, wings andlegs. The only other American species with dark legs and wings is 
albonotatus Loew, which has the thorax marked with white pollinose spots and the abdomen overlaid with brown pollen. 
(3) Syneches barypterus, nov. sp. — Female. Length 4mm, Black, including antenne, coxae, most of hind 
legs, knob of halteres, veins and stigma ; thetip of proboscis, root of wings and of halteres, anterior legs beyond the coxe, 
basal one-half of hind femora and basal fourth of hind tibiz yellowish. Third antennal joint short oval, subequal to second 
joint, the arísta three times the antennallength. "Thorax shining, one dorsocentral and one pair apical scutellar bristles, ten 
fine leng marginal hairs on scutellum. Abdomen long and narrow, much surpassing the hind femora, its hairs pale on basal 
part and becoming dark on apical segments, middle tibig: with two extremely long setze at basal third and a moderate one 
at tip, hind femora relatively slender, beneath with seven setz of which the proximal four are widely spaced, long and 
