308 Professor Williston on the Diptera of St. Vincent. 



Syneches, 



Walker, Dipt. Saunders, 165, 1856. 



1. Syneches pusillns. (PL XI., fig. 84, wing.) 



Syneches pusillus, Lcew, Centur., i., 25. 



Hah. Illinois, New York. 



Two specimens agree with this description. I have 

 no specimens from the United States for comparison. 



Deapetis. 

 Meigen, Syst. Beschr., iii., 1822. 



1. Drapetis xanthopodus, n. sp. (PI. XI., figs. 85, 



antenna ; 85a, wing.) 



^ , $ . Deep shining black ; legs yellow ; first posterior cell a 

 little narrowed at the extremity. Length 2-2^ mm. 



Antennae, front and proboscis black ; eyes contiguous below the 

 antennae ; front very narrow or subcontiguous in both sexes. 

 Oeciput black, with black pile. Thorax and abdomen shining 

 black, the mesonotum a little metallic ; pile short, dusky. Legs, 

 including the coxse, yellow, the tarsi more or less inf uscated ; hind 

 metatarsi brown or brownish ; elongate and somewhat thickened ; 

 hind tibiae with a short terminal spur ; all the femora stout. 

 Wings cinereous hyaline ; third and fourth veins gently convergent 

 near the margin. 



Ten specimens. 



2. Drapetis flavidus, n. sp. (PL XI., figs. 86, antenna; 



86a, wing.) 



^,5- Yellow or reddish-yellow ; head and the fourth 

 abdominal segment black. Length 2-2^ mm. 



Occiput, vertical triangle and front black. Eyes contiguous 

 below the antennae, subcontiguous above. Antennae yellow, the 

 third joint sometimes brownish. Thorax reddish-yellow, the 

 mesonotum shining, with light-coloured hair and bristles. 

 Abdomen yellow, opaque, the fourth segment and the hair black. 

 Legs light yellow, with light-coloured hair and bristles ; hind 

 tibiae in the male with a stout curved spur at the tip ; hind femora 

 less thickened than the middle ones ; the front pair considerably 

 thickened. "Wings hyaline ; the outer portions of the third and 

 fourth veins parallel or very slightly divergent. 



Numerous specimens. 



