50 KANSAS UNIVERSITY QUARTERLY. 



Apthorthus townsendii n. sp. 



Female. Face thinly dusted with white; front bright green, ocellar 

 bristles yellow, the cluster just behind these minute, white; bristles of 

 the sides of the front yellow; antennae black, hairs of second joint 

 brown; cilia of inferior orbit white, thorax bright green with a thin 

 coat of white dust, especially about the edges, the bristles long and 

 strong, brownish yellow in color, those of the central dorsal region 

 more blackish. Pleurae green, with whitish dust; halteres and tegulae 

 as in nigripes; scutellum with a large and a small pair of yellow 

 bristles. Abdomen golden green, with short yellow hairs all over its 



vein forked as in Psilopus. 

 Leptorhethum angustatum n. sp. 



Male. Antennae, proboscis, coxae and legs yellow; cilia of tegulae 

 yellow; eyes almost contiguous on the middle of the face, thorax 

 bright green above; abdomen green, venter and basal segments 

 largely yellow. 



Length, 2 mm.; of wing, 2.2 mm. 



One male, St. \'incent, West Indies (H. H. Smith). 



A fuller description of this species will appear in an extensive 

 paper on the West Indian Diptera now in preparation. 



