March, I9I5.] TOWNSEND : NeW MaSICERATID^ AND DeXIID.E. 63 



widening anteriorly, the face being nearly one and one half times eye- 

 width, but small males often have frontal and facial proportions nearly 

 same as in the female. Facial plate sunken, deeply depressed. Cheeks 

 very narrow, the eyes descending almost as low as vibrissje in both 

 sexes. Parafacials very narrow below, widening rapidly above, bare. 

 Frontalia narrower than parafontals, the latter with fine hairs. No 

 ocellar bristles, only the usual hairs. Male with two reclinate inner 

 orbital bristles of same strength and reclination as vertical bristles, 

 conspicuously stronger than the frontal bristles ; female with same, 

 and in addition with two proclinate outer orbital bristles, the anterior 

 inner orbital in profile set between the two outer orbital. Eyes thickly 

 short-hairy. Facialia in male strongly and thickly ciliate about as 

 high as origin of arista, those of female less thickly and conspicuously 

 so and not reaching as high. The frontal bristles of male are usually 

 stronger and more thickly placed than those of female ; they descend 

 nearly or quite to base of arista in female, but usually somewhat lower 

 in male. The cilia of facialia are about same length and strength as 

 frontal bristles. Antennae reach oral margin in male, but are a little 

 shorter in female; second joint short in both sexes, the third joint of 

 male nearly or quite five times as long as second. Arista about as 

 long as third antennal joint of male, thickened on about basal two- 

 fifths, bare save for microscopically short pubescence, basal joints 

 very short and inconspicuous. Oral margin slightly notched in middle, 

 not prominent, seemingly cut off but with a turned edge ; facial profile 

 quite strongly receding, the length of head at vibrissas half that at 

 base of antennje in females and small males and still less in large 

 males. Viibriss^e slightly below level of median notch of oral margin, 

 being close on oral margin laterally. Palpi normal, reaching end of 

 proboscis when latter is retracted, a little thickened apically. Probos- 

 cis very short and fleshy. 



Two sternopleural and three postsutural bristles. Thorax a little 

 narrower than head but hardly wider than base of abdomen. Scutel- 

 lum with a small pair of erect or suberect nondecussate apical bristles, 

 two strong lateral bristles with a weak one between them, and a weak 

 separated discal pair. Abdomen subovate, only slightly elongate. No 

 discal bristles on first three segments; first segment with no median, 

 but with one weak lateral ; second segment with one lateral bristle 

 and one median marginal pair; third segment with marginal row of 



