20 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 7S 



KEY TO THE SPECIES 



1. Wing with a blackish fascia the inner margin of which runs along the outer 



cross vein, the fascia becoming paler as it leaves the cross vein and dis- 

 appearing before attaining the apex of wing; inner cross vein with a 

 conspicuous spot like brown or fuscous cloud ; legs almost entirely testaceous 



yellow discolor, new species. 



"Wing without a broad preapical fascia, always with a narrow blackish costal 

 stripe on entire extent which is widened slightly at apex ; legs fuscous 

 or black 2. 



2. Male with a long strong apically tapered spine on hind trochanter which is 



about half as long as the basal segment of hind tarsus ; spot on inner cross 



vein large and conspicuous calcarata (Macquart). 



Male without a conspicuous spine on the hind trochanter ; spot on inner cross 

 vein narrow and inconspicuous 3. 



3. Male with a short wartlike protuberance on the inner side of each hind tro- 



chanter near apex ; short hairs on posterior central portion of mesonotum 



yellow; face and labrum testaceous yellow armata, new species. 



Male without any indication of a protuberance on inner side of hind tro- 

 chanter ; mesouotal liairs black ; face and labrum black. 



inermis, new species. 



Note. — The females of armata and inermis are unknown to me, and 

 for this reason I base my key to these and calcarata upon the male 

 sex alone. 



PLAGIOSTENOPTERINA (BAKEROMYIA) CALCARATA (Macquart) 



Eerina calcarata Macquart, Dipt. Exot., vol. 2 (3), p. 207 (1843). 



This species is evidently not uncommon in the Philippine Islands 

 and there are a number of examples in the Baker collection in the 

 United States National Museum. The general color is bright metallic- 

 blue, sometimes with a violet sheen, the wings are hyaline, with a 

 deep black costal stripe on the entire extent from base to apex of 

 costal vein, which is widened basally to cover the fork of second and 

 third veins, then confined to the subcostal cell, a narrow margin of 

 marginal cell, and slightly widened over apex of first posterior cell;^ 

 inner cross vein with a quite large spotlike black mark, outer one 

 with a similar, but rather narrower, black mark; legs black. The 

 male is readily distinguished by the hind trochanteral spur, but the 

 female lacks this and except for the broader clouding of the cross 

 veins must be very similar to the females of armata and inermis which 

 are unknown to me. 



PLAGIOSTENOPTERINA (BAKEROMYIA) ARMATA, new species 



Male. — Very similar in coloration to calcarata^ but the face, palpi,, 

 and labrum are not blackish, their general color being pale testaceous 

 yellow, and the dark marks on the wings are narrower except in the 

 case of the costal streak which is more noticeably widened in the apex 

 of first posterior cell. 



