THE CANADIAN ENTOMOLOGIST. 235 



in the last couplet in my synoptic table, and will be recognized by having 

 a single bristle at base of the third vein, the head one and one-third times 

 as high as long, and the proboscis only once geniculate. 



Dio7icea fiitoris, n. sp. — (^ ^. Black, the palpi yellow. Front of 

 male one-fifth, in the female four-fifths, as wide as either eye, frontal 

 bristles not descending beneath the base of second antennal joint, two 

 pairs of orbital bristles in the female, wanting in the male, antenna? three- 

 fourths as long as the face, the third joint one and one-half times as long 

 as the second, arista thickened on the basal third ; vibrissfe slightly above 

 the level oi the front edge of the oral margin, one or two bristles above 

 each. Thorax polished, a median vitta in front of the suture and the 

 lateral margins, whitish pruinose, three postsutural and two sternopleural 

 macrochaetse, scutellum bearing three long marginal pairs. Abdomen 

 polished, without a trace of gray or whitish pruinosity, first segment one 

 and one-half times as long as the third, the first three bearing only 

 marginal macrochaetae, last segment in the female provided at its apex 

 with a pair of curved appendages resembling a pair of pincers. Tarsi not 

 dilated, front pulvilli of male slightly longer than, in the female scarcely 

 one-half as long as, the last tarsal joint. Wings gray, toward the base 

 yellowish, along the posterior margin subhyaline, calypteres white. Length , 

 5 mm. Corvallis, Oregon. A specimen of each sex collected July i6 and 

 Sept. 1 6, 1896, by Mr. A. B. Cordley. Type No. 4065, U. S. Nat. Museum. 



ChcetopJileps rostrnta, n. sp. — $ . Black, the lower part of the face 

 and apex of proboscis, yellow. Front slightly wider than either eye, two 

 pairs of orbital bristles, frontals descending to middle of second antennal 

 joint, antenna nearly as long as the face, the third joint four times as long 

 as the second, arista thickened almost to the middle, face in profile 

 strongly concave, vibrissae on a level with front edge of oral margin, two 

 or three bristles above each, proboscis slender, the labella considerably 

 prolonged backward. Thorax gray pruinose, marked with four black 

 vittse ; three postsutural and two sternopleural macrochaetse, scutellum 

 bearing three marginal pairs. Abdomen polished, bases of last three 

 segments gray pruinose, each segment bearing only marginal macro- 

 chaetse, venter destitute of short, stout spines. Tarsi not dilated, hind 

 tibiae not ciliate. Wings hyaline, first vein bristly on its apical third, the 

 third bearing three bristles near its base, calypteres white. Length, 3 mm. 

 Biscayne Bay, Fla. (Mrs. A. T. Slosson), and Opelousas, La. (Mr. G. R. 

 Pilate). Three specimens. Type No. 4066, U. S. Nat. Museum. 



