3.')6 i'i!(i<i:i:i)i\<!s or /•///■; y.iriox.ii. Mrsi:rM. 



Fiimily HELOMYZTDAK. 

 HELOMYZA RUBIDA, new species. 



Male and t'oiiialo: Yellowish, ()i)aque, except tlie fVont, jiniy pruinoso, 

 the hairs and bristles black; lace and cheeks yellow pruiuose. third 

 Joint of antennae orbicular, the arista brown, pubescent; no macro- 

 chaetae near the vibrissae. Thorax bearin<»- five pairs of dorso-central 

 niacrochaetae, one sternoplenral, no humeral, and none above the front 

 coxae; pleura, besides the niacrochaetae, bare. All femora bearing- 

 seteral nnicrochaotae, front and hind tibiae each bearing only a pre- 

 apical one. Winj^s yellowisli hyaline, the small and posterior cross- 

 veins bordered with brown, a larj;e brown spot at apex of second vein 

 and a small one at a[)ices of the third and fourth, costal bristles rather 

 long'. Length, G mm. Four males and two females (No. 703). 



Tyj)e.—^o. 4010, IT.8.N.M. 



Family MICROPEZIDAE. 



NERIUS FEMORATUS. new species. 



Male and female: Head yellowish, a large, ])olished, Wack spot back 

 of each eye, front marked with two opaque, velvet-black vittae extend- 

 ing its entire length and separated by a yellow interval; a black s^mt 

 between each eye and the adjacent anteuna; under part of the head 

 yellow pruiuose anteriorly, t'le remainder white pruinose; antennae 

 yeUow, the lirst Joint, upper edge of the second, and the ujiper, apical, 

 and lower edges of the third, except on the base of the latter, browu; 

 first Joint slightly broader than long, the second ])rolonged on its inner 

 side nearly to the middle of the third, the latter almost twice as long- 

 as wide; style white, the base yellow; i)roboscis brown, the minute 

 l)alpi yellow. Dorsum of thorax brown, usually marked behind the 

 suture with two or four yellowish vittae; two pairs of dorso-central 

 macrochaetae ; sides of thorax and the pleura yellow, white i)ruinose 

 except a broad, black niedian vitta; one sterno])leural niaciochaetae, 

 pleura otherwise destitute of macrochaetae and hairs; scutellum browu, 

 a nu'dian yellow vitta, a suba[)ical pair of macrochaetae and a shorter 

 discal pair, otherwise the scutellum is bare. Abdomen brown, desti- 

 tute of macrochaetae, the hairs sparse, brown and yellow: hypopygium 

 of male exserted, hanging down, nearly cylindrical, as long as the last 

 four abdominal segments, consisting of three Joints which are succes- 

 sively narrower, the third spine-like; ovijiositor of female polished, 

 blackish-brown, as long as the last three abdominal segments taken 

 together. Legs brown, the front coxae, a band on each femur beyond 

 its middle, and the tibiae, yellow; under side of front femora of male 

 ciliate with short spines, inner side of front tibiae and un<ler side of 

 first Joint of the front tarsi ciliate with very short spines, other legs of 



