78 KANSAS UNIVERSITY SCIENCE BULLETIN. 



Paraclius nigripes, n. sp. 



Male : Face with dense whitish dust, rather wide in the low- 

 est part, antennjT of ordinary size, wholly black, arista bare, 

 front with gray dust, orbital cilia, except a few above, snow- 

 white. Thorax steel-blue above ; the same color overlaid with 

 thin white dust on the pleurae. Halteres yellow, tegulie whitish, 

 with black cilia. Abdomen dark blue-green, rather dull, with 

 some white dust along the sides ; hypopygium large, the ap- 

 pendages small, brown ; the lamella^ are only rudimentary. 

 Legs altogether greenish black, with thin white dust, from the 

 knees down less green. Fore tarsus as long as its tibia ; hind 

 metatarsus as long as the next joint. Wings narrow, infus- 

 cated except at base, the fourth vein ending considerably before 

 the apex, only a little recurved near the tip. 



Female : Face but little wider, wings less infuscated. 



Length, 3.5 to 3,8 mm. ; of wing, 2.5 mm. Five males, five 

 females. The shape of the face and the venation are strikingly 

 like the genus Macellocerus . The head is not nearly so length- 

 ened vertically, however, as in that genus. It must be re- 

 garded as a connecting link between the two genera. 



Paraclius abdominalis, n. sp. 



Male : Face moderately narrow, extending down to the lower 

 edge of the eye, white on its lower two-thirds, somewhat 

 brownish above ; front covered with white pollen, except the 

 ©cellar triangle and the root of the large vertical bristles ; 

 antennae black, of moderate size, with plain, tapering arista ; 

 orbital bristles white, except about one-third of them on the 

 upper part. Thorax bright, shining bluish green above, very 

 slightly inclined towards violet posteriorly ; a broad, black, 

 velvet-like spot above and before the root of the wing ; a small, 

 yellow spot just over the humeral spiracle ; pleura? black, thinly 

 dusted with pale gray or whitish ; halteres and tegulse yel- 

 low, cilia of the latter black. Abdomen crossed with nearly 

 equal bands of green and violet, the latter occupying the last 

 half of each segment ; the green bands are covered with white 

 dust on the sides, and gradually widened ; hypopygium thick, 

 large, black, with small, short lamellae of a sordid white color, 

 black on the edges, and bearing some stout curved hairs on the 

 free basal angle, which is prominent. Legs black, the tips of 



