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



all coxae, the trochanters, extreme tips of femora,' all the 

 tibiae 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 ; antenna 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; pleurae with thin whitish dust; 

 halteres yellow ; teguhr 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 lamellae short, brown. 

 Coxae and tarsi black ; the trochanters, knees and tibiae 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." 



