Male. Female. 



Pelastoneuriis lai/tei/atus, Loew 15 ig 



Paraclius hybridiis n c 



Faraclms prophiquus, Wheeler 21 13 



The intermediate character of the new species seems to indicate 

 a case of hybridism, but the data are not sufficient to bear out this sup- 

 position. Hybridus shows afifinity for Felastoneurus in the trend of the 

 fourth longitudinal vein and in the lack of the filamentous appendages of 

 the hypopygial Jamellfe. The other characters are, however, Paraclian. 

 It may be readily recognized by the following combination of characters : 

 Antenna? largely red ; base of fore coxse narrowly dark ; front bronzed ; 

 lamellie of hypopygium triangular. 

 8. Nejtiatoproctus venustus, n. sp. (Fig. 12.) 



J/a/,?.— Length 4.75 mm., wing 4.5 mm. Face narrow, of nearly 

 equal width, reaching three-fourths of the distance from the antenna to 

 the lower corner of the eye, covered with silvery dust. Palpi small, 

 yellow, inserted at sides of proboscis. Proboscis piceous, sparsely 

 pubescent. Antennae short, reddish ; first joint longest, glabrous ; third 

 ovate, short, vviih dorsal, long, bare arista (pubesence scarcely perceptible 

 under higher power). Front shining green, the white of the face 

 encroaching along the sides above the antennae. Post-ocular cilia yellow ; 

 lower occiput with long yellow hairs. Eyes hairy. Thoracic dorsum and 

 scutellum brilliant green, slightly dusted anteriorly, and with faint 

 indications of median cupreous stripings ; above the base of the wing a 

 velvety black spot present, stronger anteriorly. Abdomen hairy, 

 incisures blackened ; first segment brassy green, second and third 

 translucent yellow, fourth cupreous becoming green, sixth green ; 

 hypopygium small, rounded, piceous, pubescent, terminal, with long, 

 filiform, infuscated, hairy appendages; mternal appendages inconspicuous ; 

 penis short, perpendicular. Pleura greenish, gray-dusted. Middle and 

 posterior coxae concolorous with pleura; anterior cox:e yellow. Legs 

 yellow, except posterior tarsi and outer fourth of posterior tibic^, which 

 are infuscated ; pulvilli not conspicuous Wings clear, broadest about 

 the middle ; last segment of fifth vein once and one-half the length of 

 the cross-vein ; cross-vein oblique ; last section of fourth vein converging 

 towards third, then subparallel towards tip, distant from third vein, and 

 terminating at tip of wing. Halteres and teguhe yellow ; tegular cilia 

 long, pale yellow. 



