J. R. MALLOCH 27 



If tliis species really has no scutellar bristles it will be peculiar 

 in this respect, and I cannot trace am' indications of their presence 

 in the type specimen. 



PARAPHIOGHAETA new Keiuis 



This genus may be (hstinguished from Aphiochaeta Brues, whicli 

 has nigriceps Loew as type, by the presence of two rows of setulae 

 on the hind tibiae (fig. 5), instead of the single row wiiich is 

 present in all the species in Aphiochaeta. 



Type of genus: Paraphiochaeta biseriata new sjx'cies. 



Paraphiochaeta biseriata new species (Fig. 5.) 



Male. — Reddish yellow, slightly shining. Abdomen with a large brown 

 subfriangular mark on either side of each segment anteriorly, which show 

 indications of coalescing. Logs entirely yellow. Wings yellowish tinged. 

 Halteres yellow. 



Frons narrow, occupying about !§ as wide a space as either eye, its length 

 distinctly more than equal to its greatest breadth; only 1 pair of post-an- 

 tennals present; central pair of bristles of first row slightly below level of 

 post-antennals and nearer to those than to eye margin, outer pair close to 

 eye margin and situated much higher on frons; central pair of second row 

 about midway between outer pairs of first and second rows; antennae small, 

 third joint oval; arista slightly pubescent, in length slightly exceeding 

 length of frons; palpi normal in size, moderately bristled; proboscis normal ; 

 cheek bristles short. Mesonotum with 1 pair of dorso-centrals; mesopleura 

 with numerous short setulae and three bristles on posterior upper margin 

 which increase much in length from the lower to the upper bristle; scu- 

 tellum with 4 subequal bristles, the middle pair situated on disk instead 

 of on margin as is usual. Second abdominal segment slightly the longest, 

 its lateral surfaces with a few bristles; hypopygium normal in size, and 

 protuberance of moderate size. Legs slightly elongated; fore coxae with 

 3-4 long black bristles at their apices; mid tibia with the antero-dorsal 

 row of setulae confined to the basal half, the postero-dorsal row entire: 

 hind tibia with both rows entire, the postero-dorsal row (10-11) much the 

 strongest. Wings rather narrow, their length being equal to '2\ times their 

 greatest width; costa extending to three-fifths the wing length, first divi- 

 sion about two-thirds as long as second; fourth vein leaving at fork of third 

 with a slight bend and ending with a slight droop at almost the wing tip: 

 costal fringe very close and fine, in lengtli barely exceeding tlie diamet(>r of 

 costal vein. Length, 2.7.5 mm. 



Holotype.—Boimefil Farm, Rio Surubres, October 16, 1!»0<). 

 Taken by sweeping at 800 feet altitude. Type No. 6040. 



This genus wall include several other American .species which I 

 placed in my "Group C." in my paper dealing with the Phoiidae 

 in the U. S. National Museum. 



TRAX.S. .VM. ENT. SOC, XL. 



