No. 2366. NOTES ON THE SUBFAMILY PERREYIINAE—ROHWER. 163 



after it, even though it would thus be considerably older than Per- 

 reyia. Kirby (1882) was the first author to place a species in the 

 genus. The definition of the gonus given in the above key is that of 

 Konow, but as far as it goes it agrees with Cameron. The following 

 characters may be added: Palpi short, the maxillary 3-jointed, the 

 labial 1-jointed; third cubital cell receiving the second recurrent 

 close to its base. 



DECAMERIA RUFIVENTRIS Cameron. 



A single female collected April 21, 1916, at Mount Poas, Costa 

 Rica, by A. Alfaro is in the United States National Museum. 



Genus LOPHYROIDES Cameron. 



Syn. Paraperreyia Schrottky. 



Konow, without giving reasons or stating that he knew the gen- 

 otype of Perreyia, sunk Lophyroides Cameron as a synonym of Per- 

 reyia. Whether he was justified in this or not can only be deter- 

 mined by a study of authentic specimens of P. lepida Brulle. Until 

 such a comparison can be made I prefer to consider Lophyroides 

 Cameron as good genus and use Perreyia in the sense which Cameron 

 did. 



Judging from the specimens studied, it would seem that it may 

 be possible to divide this genus into two groups on characters found 

 on the antennae. In some species the female has the third joint 

 very greatly lengthened, while in others it is but little longer than 

 the following joint. The value of such characters can, however, 

 only be determined by examination of a number of species and 

 specimens. 



LOPHYORIDES GRANDIS (Schrottky). 



A female from Sapucay, Paraguay, collected October 12, 1902, 

 agrees so well with the original description that, even though the 

 flagellum is wanting and the length is only 11 mm., there can be but 

 little doubt that it is not Schrottky's species. 



LOPHYORIDES MELANGASTRA, new species. 



In color seems to be more closely allied to Brachytoma chalybeata 

 Moscary, but differs from the description of that species in number 

 of antennal joints, pale mesosternum, dark prescutum and scutum. 

 It does not agree sufficiently well with the descriptions of the males 

 to be likely to be female of any described male. 



Female.— Length, 11 mm.; length of anterior wing, 13 mm.; 

 length of antenna, 5 mm. Labrum longer than the clypeus, the 

 anterior margin narrowly rounded; clypeus flat, transverse, the 

 anterior margin truncate; supraclypeal area, broad, trapezoidal in 

 outline, gently convex; distance between eyes at the clypeis only a 

 trifle greater than the length of an eye; middle fovea obsolete; in 



