339 



Eves narrowly separated ; antenna slightly longer than head and 

 thorax together. Hairs on mesonotum more sparse than in the male. 

 Abdomen spattilate. Legs not as elongate as in male; basal joint of 

 hind tarsus slightly more than half as long as hind tibia; fifth joint of 

 all legs with 5-6 pairs of spines on under side ; tarsal claws on all legs 

 more than half as long as fifth joint, the hind pair the longest. Wings 

 as in male. 



Length, 2.5-3 mm. 



Type locality, on banks of Sangamon River at Monticello, June 

 21-30, 1914 (J. R. Malloch). Paratypes from banks of Mackinaw- 

 River at Lilly, 111., June 11, 19 14 (C. A. Hart), and from banks of 

 Stony Creek at Muncie, III, July 5, 1914 (J. R. Malloch). 



I believe the female just described to be of this species, but I have 

 no justification for this belief except the fact that both sexes were 

 taken at the same time and place. The male is readily separated from 

 caudclli by the much longer antennae, the presence of the two pairs of 

 spines on the under side of the fifth joint of the hind tarsi, and the 

 elongate legs, the basal joint of the hind tarsus in caudclli being much 

 thicker than in halter alls and barely more than half as long as the tibia. 

 The female differs from that of caudclli in the more slender and longer 

 antennae, the pale color of the palpi and coxae, and in having the legs 

 more elongate, the basal joint of the hind tarsi being of equal thick- 

 ness throughout its entire length, whereas in caudclli it is thickest at 

 the base and tapers to the apex. 



Hartomyia. n. gen. 



This genus may be recognized by the following characters : anten- 

 na; elongated, the apical five joints conspicuously so, plumose on the 

 basal eight joints of flagellum in male, short-haired throughout in fe- 

 male ; mouth parts of female well developed, those of male less de- 

 veloped. Thorax with a series of distinct setul^ along the mesial and 

 meso-lateral lines, and a group of similar setuL-e in front of wing-base. 

 Abdomen and legs similar to those of Johaniiscnoniyia. Wings 

 bare, the spurious Y-shaped vein present in the cell between radius and 

 media ; media forking very distinctly beyond the cross vein, i. e., petio- 

 late ; anal vein simple. 



Separable from JoJiannscnoniyia by the petiolate media.* 



Type of genus, Ccratopogon pictus Coquillett. 



*I have observed that picta and antennalis when at rest invariably have the 

 wings spread in the form of an inverted V, whereas in the species of Johannsenomyia 

 and other genera the wings are closed over the body. I have not, however, observed 

 a sufficient number of species to enable me to decide whether the rule holds good for 

 the species generally. 



