2 PROCEEDINGS OF THE NATIONAL MUSEUM vol.79 



Below I present a key to the species of the genus now known to me. 



KEY TO THE SPECIES OF PSEUD0TEPHEITI8 



1. Each frontal orbit with two backwardly curved bristles on the 



upper half; scutellum gray-dusted, with brown or blackish 

 marks, which are never high'y glossy ; no small spur of a vein 

 emanating from hind side of the fourth vein before inner 



cross vein (subgenus Pseudotephritis Johnson) 2. 



Each frontal orbit with but one well-developed upper bristle ; 

 scutellum gray-dusted, with a large glossy black spot «/n each 

 side occupying more than the apical half ; a short spur of a 

 vein emanating from the hind side of the antepenultimate 

 section of fourth vein and projecting into the discal cell 

 (subgenus Pseudotephritina, new) 6. 



2. Apex of the wing hyaline from tip of second to tip of fourth 



vein with the exception of a very small dark spot at the apex 

 of third vein ; inner cross vein with a hyaline area separating 

 it from a dark spot on each side of it; the dark angulate 

 mark at apex of second vein extending over disk of wing to 



the fourth vein corticalis (Loew). 



Apex of the wing with a brown or fuscous mark extending from, 

 or near, apex of second vein to, or beyond, the apex of fourth ; 

 inner cross vein always inclosed in a dark mark ; the dark 

 mark at apex of second vein not extending over disk of wing 

 to fourth vein 3. 



3. A small round dark mark in the costal cell between the humeral 



dark stripe and the large preapical dark mark; the dark apical 

 mark on wing extending into tip of marginal cell ; the dark 

 mark over the outer cross vein and the one nearer apex of 

 second vein usually connected by a paler, yellowish shade. 



approximata Banks. 

 No small round dark spot in the costal cell between the humeral 



streak and the large preapical dark mark 4. 



4. The dark mark over the outer cross vein connected with the one 



near apex of second vein conjuncta Johnson. 



The dark mark over the outer cross vein sometimes connected 

 with the one near the apex of the second vein by a yellowish 

 cloud but never by an equally dark portion 5. 



5. The dark mark over the outer cross vein not connected with the 



one on the costa before the apex of the second vein metzi Johnson. 



The dark mark over the outer cross vein connected with the one 

 on costa before the apex of second vein by a paler, yellowish 

 cloud, which incloses the inner cross vein Tau (Say). 



6. Penultimate section of fourth vein not so long as the inner cross 



vein; wing with two complete dark fasciae, one extending 

 from before the apex of the auxiliary vein to the apex of 

 sixth, the other from over the apex of first vein to the apex 

 of fifth, the latter inclosing both cross veins cribrum (Loew). 



