AMERICAN DIPTERA. 303 



tarsi more slender and one-half longer than the middle ones, also more slender 

 and slightly longer than the hind ones; wings grayish brown. 6-7 mm. 



Illinois, Connecticut; Massachusetts, New Hampshire, Kansas, 

 Louisiana. 



Empis Jolinsoni sp. nov. (Fig. 123). 

 Male and Female. Length 6 mm. — Black, head and thorax closely covered with 

 grayish tomentum, the gray color with a slight brown tinge. Eyes maroon 

 color, of the male contiguous for two-thirds the distance between the front 

 ocellus and the antennae ; of the female the eyes are separated more widely than 

 the posterior ocelli ; face short, broad, cinereous-dusted, oral border shining 

 black, cheeks obliterated, mouth-opening large ; palpi short, extending straight 

 forward, but not surpassing the oral border, luteous, with a slender black sub- 

 apical bristle ; proboscis slender, extending to the tip of the middle coxae, yellow 

 above, black below; antennae shorter than the head-height (male), or subequal to 

 it (female), first two joints short, fuscous, the third elongate, lanceolate, black, 

 blunt at the tip in the female, the arista one-half the length of the third joint in 

 the male, or more slender and only one-third the length in the female; occiput 

 cinereous, its black bristles in two rows, moderately bristly below. Thorax 

 cinereous, dorsum with two narrow darker stripes, and two broader posteriorly 

 placed lateral ones; between the median and lateral vittae a distinct series of 

 black bristles, humeri with a buncli of hairs, dorsum margined with about eight 

 prominent macrochaetae on each side, scutelium with four long marginal, and no 

 short bristles, the row in front of the halteres dense, with about fifteen bristles, 

 no other pleural bristles, pectus with a few scattered short bristles. Abdomen 

 depressed, shining, very faintly cinereous toward the base in the female and 

 opaque jet black in the male on the basal four segments, which are rather densely 

 provided with long black marginal hairs; hypopygium shining, compressed, 

 rather large, distinct, porrect, central filament yellow, slender, arcuate, largely 

 visible, middle lamellae large, pointed, porrect, fulvous on the lower side, upper 

 lamellae small, bipartite, fulvous, except the darkened upper edge. Coxae black, 

 faintly slaty-gray pollinose, with numerous black bristles, remainder of the legs 

 fuscous, becoming darker on the outer half of the tarsi ; legs slender, unarmed, 

 hind femora below with evident spines, legs with numerous bristles and short 

 black hairs; pulvilli and claws of male large. Halteres fuscous. Wings sub- 

 hyaline, with a brownish tinge, stigma almost obsolete, veins strong brown, third 

 vein furcate beyond the tip of the marginal cell, the anterior branch arises 

 acutely, the posterior branch terminates just before the extreme wing-tip, first 

 submarginal cell narrower than the first posterior cell, sixth vein recurved at the 

 tip. costa with a strong bristle at its base. 



Four specimens; Montgomery County, Pennsylvania (C. W. 

 Johnson). 



Einpis enodis sp. nov. (Fig. 125). 



3fale and Female. Length 6-8 mm. — Almost bare species of moderate stature. 



Black, cinerascent with olivaceous gray. Head cinerascent, eyes wine color 



separated at their narrowest part in the male as widely as the posterior ocelli, in 



the female a trifle more ; palpi very small, reddish ; proboscis once and one-half 



TRANS. AM. ENT. SOC, XXVIII. AUGUST, 1902. 



