I32 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 5 1 



median abdominal vitta, and abdomen is only a little dusky on anal 

 segment as seen through the golden silvery bloom. 



H. nigroscutellata van der Wulp. — One male, Cacao, Trece 

 Aguas, Alta Vera Paz, Guatemala, April 18. Barber and Schwarz, 

 collectors. This specimen agrees well with van der Wulp's de- 

 scription except that abdomen is widely blackish on median portion, 

 with only narrow lateral borders yellow. The scutellum has golden 

 pollen on dorsum. 



EUOMOGENIA, gen. nov. 



Differs from Buacaulona in the wings (male) being wholly in- 

 fuscatc, uniformly so, the same milky vittae being present ; and in the 

 hind tibiae being ciliate with moderately developed cilia. Front like 

 Homogenia, very broad. Apical cell closed in border. Tegulae 

 blackish. Type, the following species : 



Euomogenia lacteata, sp. nov. 



One male, Frontera, Tabasco, March 3, Townsend. 



Length, 9.5 ram. Blackish, the usual silvery golden markings on 

 mesoscutum, including the sides back to scutellar suture and along 

 latter. Scutellum somewhat silvery golden on dorsum. Abdomen 

 wholly fuscous, with a reddish tinge showing through the fuscous. 

 The broad frontalia velvety blackish, narrow parafrontals and whole 

 of face and cheeks golden. Antennae brownish. Palpi yellow, dark 

 on tips. Basal half of femora yellow, least extensive on front pair, 

 most extensive on hind pair, base of hind tibiae yellow, rest of legs 

 black, claws and pulvilli yellow, tips of claws black. Wings black- 

 ish, with the milky or golden grayish vittae described for Buacaulona. 



Type— Cat. No. 10,880, U. S. N. M. 



Genus Pennapoda Townsend 



This was described as a subgenus, in Ann. and Mag. N. H., xx, p. 

 282. It is here raised to generic rank. Type, Trick, phasiana 

 Townsend, loc. cit., male and female. The species Phania simillima 

 Wiedemann and Trich. subalipcs Townsend may belong to this 

 genus. There are no specimens in U. S. N. M. for examination. 



POLISTOMYIA, gen. nov. 



This genus is proposed for the Trich. trifasciata H. Loew group. 

 The abdomen is subcylindrical in both sexes, slightly more widened 

 on apical portion in male. Apical cell closed and quite long petiolate. 

 Wings with but little more than costal half colored, the inner por- 



