Burgess.] 322 [February 27, 



anal cell open. Tegula? moderate. Scutel rather small, unarmed. 

 Legs short and stout, fore tibia? without, and middle and hind tibiae 

 with, spurs. Empodium pulvilliform. Abdomen oval, with six visible 

 segments (c?) and protruding genitalia. 



Glutops may at once be distinguished by its Musca-like body, large 

 head, antennal structure, and the conical prominences of the face. 

 The structure of the mouth parts is obscured by the thick curtain of 

 hair falling from the face and cheeks. 



Glutops singularis sp. nov. Plate 9, figs. 2, a, b, c and d. 

 : cf. Bluish gray; eyes, base of antenna?, mouth parts, and legs 

 ferrugineous. Thorax with four narrow, dusky, longitudinal stripes. 

 Wings dusky, the cross- veins clouded, a rusty stigmatic stripe. Long, 

 corp., 8 mm. Long, ala?, 8.5 mm. 



' Eyes brown, transverse, contiguous from ocellar tubercle nearly to 

 base of antenna?. First two joints of antenna? ferruginous, long, 

 clavate; first joint one-third longer than the second; both joints 

 have long bristles or hairs, especially above. Third joint one-half 

 longer than the first two together, 8-annulate. First annulus nearly 

 half as long as the rest together, and stouter, slightly clavate, con- 

 stricted like an hour-glass near the base. Following annuli short 

 and connate, the first being hardly visible except above. Terminal 

 annulus as long as the two preceding, rounded at the tip, which 

 bears a few very minute, curved hairs. The third joint from the tip 

 of the first annulus, black. Face thickly covered with long, fine, 

 black hair, with brownish reflections in certain lights ; the conical 

 prominences smoothly rounded, and separated by a deep furrow. 

 Epistomum large, triangular, and tumid. Palpi and mouth parts 

 brownish-red. Palpi apparently two-jointed, last joint long and de- 

 curved. Occiput with long, black hairs. Thorax with four narrow, 

 dusky stripes, equidistant, becoming obsolete anteriorly. Scutel 

 rather small, triangular, with rounded obtuse hind angle. Abdomen 

 oval, depressed, segments one to four large, second largest; fifth and 

 sixth narrow and small. Thorax, especially the scutel, and abdomen 

 above clothed with long and very fine blackish gray hair. Coxa? 

 large, the first pair brownish, the others gray, all covered with long, 

 curling, black hair. Femora, tibia?, and the four posterior metatarsi 

 at base, brown. Fore tarsi, and tip of fore tibia?, infuscated. Joints of 

 the four posterior tarsi brownish with infuscated tips, last joints wholly 

 black. Halteres with brown stem and black knob. Wings dusky, 



