JAMES S. HINE 
297 
bristly hairs, beard sparse and i)ale yellowish, occiput dark with a few bristles. 
Dorsum of the thorax shining black, a small, pale yellow, pollinose spot on each 
humerus, sides of the thorax sparsely gray polhnose, the transverse row of 
bristles beneath the base of each wing pale yellow, halteres yellow, wing uni- 
formly pale brown all over, veins nearly black; all the coxae black, more or 
less gray pollinose, front and middle legs mostly yellow, a stripe on the upper 
side of each femur and the apex of each tarsal segment black, hind legs mostly 
black, immediate base of each femur and each tibia yellow; legs furnished 
with sparse short hair and numerous long and slender bristles, some of which 
are black and some yellow. 
Holotype. — Female, taken at Juan Vinas, Costa Rica, at an 
elevation of 3400 feet, September 28, 1909, by Dr, P. P. Calvert. 
This genus has not been reported from North America here- 
tofore, but five species have been described from Brazil, Peru 
and Bolivia. Dr. F. Herman of Erlangen gives an extensive 
treatise on the genus in Nova Acta Acad. C. L. C. G., band xcvi, 
page 70, (1912). 
Ommatius marginellus Fabricius 
1781. Asilus marginellus Fabricius, Spec. Ins. ii, 464. 
A female specimen from Juan Vinas agrees in size and colora- 
tion with specimens of this species from New York and Ohio, 
I have no way of separating specimens which I have from New 
York, Ohio, Georgia, Mexico, Guatemala, Costa Rica and British 
Guiana. Former writers have reported the species from even a 
wider range than this — all the way from New England to Brazil, 
including the West Indies. 
Promachus cinctus Bellardi 
1861. Promachus cindus Bellardi, Saggio, ii, 25. 
There are three female specimens of Promachus in the collec- 
tion. At least two are cinctus ] Juan Vinas, June 28, 1909, near 
Rio Reventazon, 2500 ft. alt.; Forest on Florida road, west of 
Guapiles, June 3, 1909, but I am in doubt about the third, mainly 
on account of its much larger size. Aside from size the hair on 
various parts of the body is lighter, although the latter is of no 
uncommon occurrence in various species of Asilidae. The known 
range of Promachus cinctus is from San Lorenzo, Mexico to Trini- 
dad and Costa Rica. 
Eicherax nigripes Bellardi 
1861. Erax nigripes Bellardi, Saggio, ii, 46. 
In Linnaea Entomologica, band iii (1860), page 396, Loew de- 
TRANS. AM. ENT. SOC., XLIII, 
