152 KANSAS UNIVERSITY SCIENCE BULLETIN. 



Laxenecera zonata. 



Laxenecera zonata Loew, Dipteren-Fauna Siidafrika's, 123 (195) ; 1860. 



Three specimens ; January. 



Laxenecera sp.? 



A small, poorly preserved specimen. It agrees fairly well 

 with the description of L. mollis Loew, but its state of preserva- 

 tion does not admit of positive identification. 



Promachus. 



( Loew, Linn. Ent. Ill, 390; 1848.) 



Promachus sequalis. 



Promachus gequalis Loew, Dipteren-Fauna Siidafrika's, 127 (199) ; 1860. 



One specimen ; .January. 



Promaclius flavibarbis, n. sp. 



Female : Head yellow pollinose, in certain lights sides of 

 face and posterior orbits silvery ; front with yellow hairs on ex- 

 treme lower part of sides and on vertex, sides with bristly- 

 like hairs ; face with only yellow bristles ; palpi and proboscis 

 black, pile of former yellowish, of latter white ; cheeks with a 

 fuscous tinge ; occiput with white pile and with a row of black 

 bristles on each side above ; antenn^ie black, first two joints 

 reddish and with short yellow pile. Mesonotum brown and 

 with a median gray line, humeri and lateral margins yellowish 

 pollinose, pile largely short and black, on anterior margin 

 whitish, on posterior margin longer, and white and black in- 

 termixed, two rather strong presutural bristles, three postalar, 

 one of which is rather weak, two supraalar, and three dorso- 

 centrals on each side ; scutellum yellowish pollinose, pile and 

 bristles yellowish white, except a large black bristle on each 

 side; pleurae grayish pollinose, pile white, two white and two 

 black bristles on upper margin of mesopleurse ; halteres yellow, 

 tuft in front of them yellowish white. Abdomen yellowish pol- 

 linose, second, third, fourth and fifth segments with a large 

 subquadrate, basal, black spot, pile yellowish, on first segment 

 rather long and white, sixth and following segments nearly 

 wholly shining black ; venter grayish yellow, with white pile, 

 each segment with a small, oval, reddish bare spot centrally. 

 (JoxcO grayish pollinose, front pair thickly, middle and hind 

 pairs sparsely, white pilose, two hind pairs with a few strong 

 yellowish bristles. Legs black, under side of femora, four an- 



