2IO ENTOMOLOGICAL NEWS [May, '14 



light yellow, the terminal palpal segments a little more brown; an- 

 tennae with the two basal segments dull yellow, flagellum black; head 

 dull greenish brown (greasy in the type). 



Thoracic dorsum dull brownish yellow without well defined stripes ; 

 caudo-lateral angles of the prsescutum brown ; scutum and scutellum 

 brown; postnotum greenish brown. Pleurae dull yellow. Halteres 

 yellow. 



Legs light yellow, the tibis a little darkened at the tip, tarsi brown. 



Wings hyaline, cells C and Sc yellow ; veins C, Sc and R yellow, 

 other veins dark brown. Venation (see Plate IX, figure 5) : Deflec- 

 tion of R2 plus 3 with a spur at midlength ; cell istM2 closed. 



Abdominal tergites rich brown with a blackish median blotch ; 

 sternites brownish. 



Holotype, female, Ascuncion, \'i!la i\Iorra, Paraguay, \'czen- 

 yi, in the Hungarian National Museum. 



5". occulta differs from 5". flavipcnnis O. S}\ the only 

 described species with a closed cell \stM2, in its lack of dark 

 crossbands on the wing. 



Genus Rhabdomastix .Skuse. 

 1889. Rhabdomastix Skuse; Proc. I. inn. Soc. M. S. Wales, ser. 2, 

 vol. 4, p. 828. 



Rhabdomastix (Rhabdomastix) illudens sp. n. (PI. IX, fipr. C) 



Antennae of the $ between four and five times as long as the body ; 

 a dark brown stigmal spot. 



Male. — Length, 7.4 mm. ; wing, 7.7 mm. ; antennae, 3.^ mm. Palpi 

 very short, the first segment light brown, the apical segments almost 

 black; antennae with the basal segment enormously enlarged, barrel- 

 shaped, the second segment small, rounded, flagellar segments succes- 

 sively elongated, the apical segments very long, the whole antennae 

 almost five times as long as the body; scapal segments brown, flagel- 

 lar segments very pale, the extreme tip of each segment narrowly 

 dark brownish black, the apical antennal segments more brown; the 

 whole head underneath the swollen scapal segment is very deep and 

 stout ; head light gray. 



Thorax brown with a light gray bloom; pseudosutural fovea large, 

 prominent, black; tuberculate pits rather far cephalad, black; scutum 

 and postnotum grayish, scutellum rich brown. Pleurae pale brownish 

 with a sparse gray bloom. Halteres short, yellowish. 



Legs, coxae and trochanters yellowish : fore and middle trochanters 

 long and slender, the hind trochanter shorter; femora and tibiae yel- 

 lowish brown becoming browner on the tarsi. 



"Osten Sacken, Smithson. Miscell. Coll., vol. 11, No. 256 (1873). 



