292 DIPTERA FROM SOUTHWESTERN UNITED STATES 



Fannia benjamini Malloch 



1913. Fannia henjamini Malloch, Proc. U. S. Nat. Mus., xliv, 625, pi. 77, f. 9. 



There are five specimens in the collection from Alamogordo, 

 New Mexico, with dates as follows: three males, April 19, 1902, 

 two females, May 7 and 8, 1902. 



The species was originally described from specimens collected 

 in California, Arkansas, and Cuba. I have since seen it from 

 Brownsville, Texas, and Graham Mountains, Arizona. 



Fannia femoralis Stein 



1897. Homalomijia femoralis Stein, Berl. Ent. Zeit., xlii, 282. 



Three males taken at Alamogordo, New Mexico, April 19 and 

 23, 1902. 



Fannia spendida Stein 



1897. Homalomyia splendida Stein, Berl. Ent. Zeit., xlii, 170. 



One male; Mesa Grande, Sonoma County, California, June 

 1908, (J. P. Baumberger). 



Fannia trianguligera .sp. n. 



Male. — Black, slightly shining. Face, orbits, and cheeks silvery. Abdo- 

 men with dense bluish gray pruinescence on dorsum, second, third and fourth 

 segments each with a large black triangle, the apex of which is carried to an- 

 terior margin, fifth segment with a black dorso-central stripe. Legs black. 

 Calyptra white. Halteres yellow. 



Ej-es bare, separated by slightly more than width across posterior ocelli; 

 arista bare; palpi stout, as long as apical portion of proboscis. Thorax with 

 acrostichals two-rowed in front, becoming three-rowed just before suture. 

 Hypop_vgium small, not protruded. Legs similar to incisurata Zetter.stedt, 

 differing noticeabl}- only in the bristling of the mid femur, the antero-ventral 

 series of bristles being much longer than in that species, beginning at base 

 with bristles which are at least as long as diameter of femur and continuing to 

 apex, gradually becoming closer and shorter; the postero-ventral series is 

 much denser, and more regular than in incisurata and begins at base, while 

 many of the bristles of apical third of series are distinctly curved at apex, 

 almost fishhook -like; the mid tibia is also more noticeably swollen on apical 

 half than in incisurata, the latter having the tibia gradually thickened from 

 base to apex, whereas in the present species it is appreciably attenuated to 

 beyond middle and then rather abruptly thickened. The hind legs are almost 

 the same in form and chaetotaxy in both species, but the bristles on antero- 

 ventral and postero-ventral surfaces are weaker and less numerous in trian- 

 guligera than in incisurata. Calyptra unequal. 



Female. — Similar to the female of scalaris Fabricius and incisurata. Differs 

 only in having the interfrontalia red-brown, the orbits very broad, each as 



