304 A. L. MELANDER. 



to two times the height of the head, hlack above, reddish below, labella black; 

 anteiuise black, slender, as long as the head, second joint one-half the length of 

 the first, first and second joints with sparse hairs, third joint lanceolate, some- 

 what blunt in the female, arista one-third the length of the third joint; the 

 strong bristles of the occiput in two rows. Thorax brownish gray cinereous, the 

 brown more evident on the dorsum, with four broad brown vittse, the intervittal 

 spaces with short hairs, those of the median series minute, a few long marginal 

 macrochfetse on the dorsum ; scutellum with four to six marginal bristles of 

 uneven length, the central pair longest; nietapleural row consisting of about five 

 closely placed nearly uniform bristles; prothoracic series small, no pectal or other 

 pleural bristles. Abdomen concolorous with the pleurge, devoid of long hairs, 

 almost glabrous, except towards the tip, with strong bristles near the incisures; 

 hypopygium small, not extending above the abdomen, closed, central filament 

 hidden, or sometimes the trumpet-shaped tip more or less exposed, middle 

 lamellse small, rounded, fulvous, upper lamellfe small, nearly hidden. Coxse 

 cinerascent, apically more or less fuscous, provided with a few bristles, those of 

 middle and hind legs in series, trochanters with a minute black spot; legs sim- 

 ple, fuscous, femora narrowly tipped with black, tarsi black, legs with small bris- 

 tles, becoming short and dense on the hind tibiae of the male, and on the under 

 side of all the tarsi of both sexes, and long on the tibiae, sparsely so on the fiont 

 and middle ones, and more numerous on the hind ones of the male; none of the 

 metatarsi or tibiae thickened ; pnlvilli minute. Halteres reddish. Wings hya- 

 line, with a smoky tinge, no stigmal spot; veins strong, dark fuscous, discal cell 

 rather deep, the first section of its anterior border one-fourth the length of the 

 second section ; the furcation of the third vein even with the tip of the marginal 

 cell, the posterior branch terminates beyond the tip of the wing. 



Glen Ellyn and Chicago, Illinois. 



Empis stenoptera Loew. 

 Cent, v, 50. 



Slender, almost glabrous, opaque, whitish cinerascent, abdomen of female less 

 whitish. Head concolorous. Eyes of the male separated. Antennae very slen- 

 der, black. Proboscis black, longer than the head, but shorter than the anterior 

 femora. Dorsum of the thorax quadrivittate with subfuscous, the median vittae 

 abbreviated posteriorly, the outer anteriorly. Hypopygium of the male closed, 

 black, the lower lamellae testaceous, the central filament hidden. Coxae whitish 

 cinerascent, pale yellowish apically. Legs slender, fuscohs, the base of the 

 femora, and the base of the tibiae broadly below, yellow, the tibiae towards the tip 

 and all the tarsi black. Halteres pale yellowish. Wings narrow, cinereo-hyaline, 

 stigma obsolete, veins fuscous. 4 mm. 



New Hampshire (Osten Sacken). 



Empis cacuiuiiiifer sp. nov. (Fig. 124). 

 Male and Female. Length 6 mm. — Dusky opaque species. Head, pleurae, 

 metanotum and large part of the abdomen dark plumbeous gray-pollinose ; tho- 

 racic dorsum broadly quadrivittate with brown. Palpi fuscous, without hairs; 

 proboscis one and one-half times the head-height or less, dark reddish, the 

 labella shorter than the proboscis. Antennae as long; as the head, slender, black, 

 the first joint twice as long as the second, the third joint not quite three times 



