312 A. L. MELANDER. 



3Iale. — The hairs of the under side of tlie palpi are long; tlie antennal style is 

 not more than one-fifth the length of the third joint ; the thoracic vittse are nar- 

 row ; the hairs on the base of the costa become longer, with two or three on each 

 side bristle-like. Abdomen stout, deflexed at the tip, the fifth dorsal segment 

 large, convex, provided with a prominent lateral reddish umbo, beneath this the 

 venter is much constricted, the fourth ventral segment large, terminating in a 

 flat transverse bifid process, the fifth and sixth ventrals small, crowded into the 

 constriction, the seventh ventral moderately large; hypopygium small, the cen- 

 tral filament thick, its base exposed, middle lamellse quadrilateral, truncate at 

 the tip, yellowish. 



Clementon, New Jersey. 



The male has eight long seutellar bristles, the female but four. 

 The eyes of the male are narrowly separated by the front so that 

 they nearly touch (vide Coquillett, Enipidre, p. 398, group 23). 



It is to the group of the four following species that Empimorpha 

 barbata belongs. 



Eitipis laevigata Loew. 

 Cent. V, 49. 



Male. — Wholly black, shining, black pilose. Eyes contiguous. Antennae slen- 

 der, black. Proboscis black, partly fuscous above, longer than the anterior tibiae. 

 Dorsum of thorax black pilose, very finely covered with cinerascent pollen. Scu- 

 tellum convex, bare, except for six marginal bristles. Pleurae and coxae cinereo- 

 pollinose, subopaque. Hypopygium deflexed, closed, the central filament hidden. 

 In front of the hypopygium the venter has two incurved apophyses bearded with 

 black pile. Legs simple, slender, clothed with short hairs and fine black bris- 

 tles. Knob of halteres flavescent. Wings pale subfuscous, the stigma subfus- 

 cous, veins fuscous. 7.5 mm. 



New Hampshire (Osten Sacken). 



Einpis Tirgata Coquillett (Fig. 108). 

 Proc. Nat. Mus., 1895, p. 408. 



Male. — Black in all its parts, except the whitish knob of the halteres and the 

 pul villi; all pile and bristles also black. Eyes separated by an interval nar- 

 rower than the lowest ocellus; third joint of the antennae sublanceolate ; the 

 style nearly one-fourth as long as the joint. Proboscis slightly over twice as long 

 as the height of the head. ThoJ'ax subshining, lightly gray pollinose and marked 

 with three shining black vittaj ; pleura grayish black pollinose, scutellum shin- 

 ing, bare, except the six marginal bristles and a few marginal hairs. Abdomen 

 depressed, shining ; hypopygium rather small, central filament hidden ; on the 

 under side of the fifth segment is a large, ovoid process, extending the entire 

 length of the segment, its posterior end rather thickly beset with short, stout 

 black bristles. Legs slender, front metatarsi one-half thicker and one-half longer 

 than the middle ones, noticeably longer and thicker than the hind ones. Wings 

 pale brown, stigma darker brown, all the veins perfect. 8 mm. 



Washington (O. B. Johnson) ; British Columbia, Alaska. 



