AMERICAN DIPTERA. 247 



the wing and passing insensibly into the usual fi-inge of hairs ; stigmal spot very 

 broad ; second vein strongly curved in a double curve to accomodate itself to the 

 deep stigma, ending much nearer to the tip of the first vein than usual ; third 

 vein straight, subparallel with the costa in the outer part of its length ; discal 

 cell narrow, the cross-vein at its apex perpendicular to the penultimate section 

 of the fifth vein. The halteres seem to have been dark. 4.5 mm. 



Guerrero, Mexico (H. H. Smith). 



Hybos luellipes Wheeler et Melander (Fig. 78j. 

 Biol. Cent.-Am., 1901, Dipt. Suppl. 



Black, shining, moderately strongly yellow-pilose. The two parts of the an- 

 tennse are subequal in length, arista shorter than the eye-height. Eyes contigu- 

 ous below the antennse, leaving a small subantennal triangular space shining 

 black. Mesonotum shining black, moderately strongly pilose. Pleurae black, 

 shining, not ciuerescent. Pedicel of halteres black, knobs defective. Abdomen 

 shining black, robust, not unusually hairy. Legs except tarsi shining black, 

 strongly hairy; posterior femora incrassate, not strongly spinulose beneath; 

 first two joints of tarsi yellow, remainder blackened. The hairs of the legs 

 are longer laterally, so as to give the legs, especially the tarsi, a ciliated appear- 

 ance when viewed from the front. Wings narrow, wholly hyaline, except for 

 the fuscous stigma which completely fills the outer third of the marginal cell; 

 veins strong, discal cell narrow. 4 mm. 



Guerrero, Mexico (H. H. Smith). 



Except for the usual postoculars the pile is yellowish. 



Hybos electus nora. nov. 

 Hyhos dimidiafus Loew (nee Bellardi nee Walker), Wien. Ent. Monatschr., v, 36. 

 Wholly black, very shining, thorax with a greenish, abdomen with a bluish 

 tinge. Pile of the whole body pale, of the abdomen whitish. Legs black, the 

 apex of the femora, the front and middle tibiae, and the first two joints of the 

 tarsi yellow, the remaining joints blackish. Some longer setae present near the 

 apices of the anterior and middle tibiae, and on the anterior metatarsi. Halteres 

 black. Basal half of the wings blackish, apical einereo-hyaline, .stigma very dis- 

 tinct, oblong, black. 3 mm. 



Cuba. 



Three specimens from St. Vincent Island show variation in the 

 fuscous legs, hyaline wings and slightly smaller size, though they 

 retain the bluish body color of Loew's typical dimidiatus. 



From this variety two specimens from St. Vincent, four from 

 Tifton, Georgia, and two from New Bedford, Massachusetts, vary 

 in the blackish body color, but are similar to it in other respects. 



The extension of this species to the United States is interesting. 



Hybos slossoiiie Coquillett. 

 Proc. Nat. Mus., 1895, p. 437. 



Head, including the antennte, proboscis and palpi, black; face broad, whitish 



TKANS. AM. ENT. SOC, XXVIII. JULY, 1902. 



