ALDRICH : DOLICHOPODID.K OF GRENADA, W. I. 79 



all coxir, the trochanters, extreme tips of femora, all the 

 tibi;v and the bases of all tarsi yellow. Wings subhyaline, 

 only faint traces of brown along the veins ; the bend of the 

 fourth vein occurs just past the middle of the last section, and 

 is quite abrupt ; the curve back towards its former course is 

 also rather short, so that the vein is nearly parallel with the 

 third for some distance at the end ; costa with a long and 

 striking swelling, beginning just after the humeral cross-vein, 

 and continuing almost to the tip of the first longitudinal. 

 Length, 4.4 mm. 



Female : Face as in male ; front with pollen a little grayish ; 

 abdomen with same bands ; thickening of costa perceptible. 



Length, 4.2 mm. Four males, two females. The following 

 label on one: "Lights generally on stones in streams; com- 

 monly seen in pairs, the two sexes lighting near to each other ; 

 very wary, and difficult to capture." 



The species is closely related to albonotatus Loew, but the lat- 

 ter has darker wings, third and fourth veins convergent to the 

 tips, swelling of costa larger in female, etc. 



Paraclius fuscicornis, n. sp. 



Male: Face very narrow in the middle, with brownish pol- 

 len, sometimes more whitish ; antennae varying from light to 

 dark brown, of ordinary structure ; front with light brown dust. 

 Cilia of lateral and inferior orbit white. Thorax deep blue, 

 varying to purple, shining ; pleura? with thin whitish dust ; 

 halteres yellow ; tegulae yellow, their cilia black, abdomen shin- 

 ing blue, the posterior margins of the segments deep purple in 

 the best-developed specimens, the sides of the segments with 

 white dust ; hypopygium large, thick, the lamella? short, brown. 

 Coxae and tarsi black ; the trochanters, knees and tibia 1 yellow. 

 The femora are not so dark as in the related species, more deep 

 brown than black. Wings rather slender, slightly infuscated, 

 bend of fourth vein midway between great cross-vein and apex, 

 last part of fourth parallel with third. Costa not thickened. 



Female : Face a little wider than in male. 



Length, 3.5 to 4.3 mm. ; of wing, 3.3 to 4 mm. Five males, 

 five females, one bearing label : "Balthazar (Windward), 250 

 feet, April 7. Lighting on stones in bed of shady stream." 



