Mat,1893.J INSECTS OF THE DEATH VALLEY EXPEDITION. 257 



and longer bristles posteriorly. Third longitudinal vein strongly convex in front, 

 terminating very near the tip of the wing ; antepenultimate section of the fourth \<in 

 fully twice the length of the penultimate section, the latter joining the ultimate 



section in an angle, which may be slightly rounded in the female. Legs not elon- 

 gate, the bristles of ordinary size; land tlbue not ciliate; pul villi and ungues small 

 in both sexes. 



This genus is nearest allied to Morinia and Pseudomorinia, but differs in the small 

 claws of the male, the higher position of the vibrissa', the situation of the posterior 

 cross-vein, the closed first posterior cell, and the absence of discal and marginal 

 bristles on the anterior abdominal segment. 

 Melanodexia tristis n. sp. 



Male. — Wholly black, shining, with black bristles and hair. TegnlsB blackish; 

 pulvilli yellow. Frontal stripe opaque, very narrow above, separating the eyes; 

 three or four times as wide below; the narrow lunula shining. Hair of the 

 lower part of the cheeks long. Thorax and scutellum with long bristles and mod- 

 erately abundant erect hair. First two segments of the abdomen with abundant 

 erect hair, posteriorly the abdomen is, for the greater part, clothed with numerous, 

 erect, slender bristles. Wings tinged with blackish, especially along the veins. 

 Length, 6 mm . 



Female. — Frontal stripe very broad, on each side with a row of short bristles; 

 orbital and ocellar bristles present. Thorax and abdomen not hairy, but nearly 

 bare, with short, recumbent bristles instead. Length, 7 mm . 



One male, Southern California (Baron), and one female, Monterey County, Calif. 

 (Riley). 



Lispa tentaculata Degeer, Ins. vi, 42, 15, 1776 (Musca) Latreille, Gen. Crust, et Ins. 

 iv, 347, 1809; Fallen, Dipt. Suec. Muse. 93, i, 1820; Meigen, Syst. Beschr. v, 226, 1826; 

 Macquart, Hist. Nat. Dipt, ii, 314, 1835; Zetterstedt, Dipt. Scaud. v, 1796, 1846; 

 Walker, Ins. Dipt. Brit, ii, 147, 1853; Schiner, Fauna Austr. i, 660, 1862; Kondaui, 

 Dipt. Ital. Prodr. vi, 289, 1877; v. d. Wulp, Tijdschr. v. Ent. xi, 1868, pi. ii, f. 6; 

 Kowarz, Wien. Ent. Zeit. xi, 000, 1892. 



Habitat. — All Europe (Kowarz), New England, Michigan, South Dakota, California. 



Two specimens, Panamint Valley, April, 1892. The species is especially charac- 

 terized by the slender spur-like projection of the front metatarsi in the male. 

 Euxesta spoliata n. sp. 



Female. — Shining, somewhat metallic green. Front, red or reddish yellow, with 

 moderately coarse hairs. Antenna?, reddish or brownish yellow, third joint rounded. 

 Face, reddish yellow, of a little lighter color than t'he front, not pollinose. Thorax, 

 bright green, somewhat shining, thinly pruinose. ' Abdomen, black or pitchy black, . 

 the first two segments red or yellowish. Legs, yellowish or brownish red, the distal 

 joints of all the tarsi blackish. Halteres, light yellow. Wings, whitish hyaline, 

 with light-colored veins, except in the dark spots, where they are blackish ; the costal 

 and subcostal cells are blackish throughout, encroaching somewhat on the marginal 

 cell. The large blackish spot at the tip begins on the costa a little beyond the middle 

 of the antepenultimate section and reaches nearly to the fourth vein; the last 

 section of the fourth vein converges markedly toward the third. Length, 4 mm . 



Three specimens, Death Valley and Panamint Mountains, Calif. 

 Ephydra tarsata n. sp. 



Front shining greenish black, with two pairs of proclinate ocellar bristles; about 

 three pairs of reclinate bristles below, a row along the orbit, directed inward, and 

 a vertical bristle to the inner side of the row, directed inward. Antenme black ; a 

 small bristle on the upper side of the second joint; arista very short, pubescent on 

 the much thickened basal portion. Face showing somewhat greenish beneath the 

 grayish pruinosity ; hair long and black. Thorax black, with a thin gray pruinosity ; 

 the dorsum faintly striate. Abdomen black, olivaceous grayish pollinose. not shin- 

 12731— Fo. 7 17 



