THE CANADIAN ENTOMOLOGIST. 79 



what geniculate, second joint slightly elongate ; proboscis short, fleshy, 

 dark brown ; palpi yellow, a little thickened at tip j occiput shining- 

 black, somewhat bristly. Thorax, scutellum and abdomen wholly shining 

 greenish-black, scutellum with a weak apical decussate pair of bristles, a 

 sub-apical decussate (?) pair of macrochaets, and two lateral pairs. First 

 abdominal segment with one or more lateral macrochaetse ; second with a 

 lateral marginal one, a lateral discal pair, a median discal and a median 

 marginal pair ; third with a lateral discal pair, three lateral marginal ones, 

 a median marginal and a median discal pair; anal segment with a discal 

 row and a few marginal macrochaetae. Legs black, claws and pulvilli 

 short. Wings grayish-hyaline, basal portion and costal border yellowish, 

 with small costal spine, third vein bristly at base ; apical cell closed in 

 tip of wing, fourth vein curved, hind cross-vein nearer curve ; tegulte 

 pale tawny, halteres brownish. 



Length of body, 3^ mm.; of wing, 3 mm. 



Described from one specimen ; So. Illinois (Robertson). 



Tryphera polidoides, n. sp., %. 



Eyes light brown, thinly hairy ; frontal vitta light brov/n ; apparently 

 three orbital bristles amongst other weaker bristles ; sides of front shining 

 black ; sides of face and facial depression black, thinly silvery, epistoma 

 paler ; cheeks and occiput shining black, with slight greenish lustre, hairy, 

 cheeks bordered anteriorly with a narrow brownish prtegenal area ; 

 antennae and arista black, first two antennal joints rufous, third joint 

 about three times as long as second, moderately wide ; proboscis 

 brownish, palpi yellowish. Thorax, scutellum and abdomen dark metallic 

 green ; first segment with a lateral marginal macrochaeta ; second with a 

 lateral discal and marginal one. or pair, and a median discal and marginal 

 pair ; third with a lateral discal and median discal pair, and a quite 

 distinct marginal row; anal with a discal and marginal row. Legs blackish) 

 claws and pulvilli only a little elongate, pulvilli tawny-whitish. Wings 

 slightly grayish, nearly hyaline, veins yellow, third vein spined at base ; 

 tegulse dull whitish, translucent ; halteres brownish. 



Length of body, 5I/3 mm.; of wings, 3^^ mm. 



Described from one specimen ; N. Y. (Comstock). 

 Clistomorpha, n. gen. 



Much the general form of Clista, but greatly resembling Hyalomyia 

 in the form of the head. Belongs in Phytoince. Head in general profile 

 triangular, the fronto-facial profile sinuate in outline, bulging above. 

 Front not prominent, very narrow in $ , the eyes closely approximated in 



