LIST OF DIPTERA. 51 



Div. Z. 



Limnobia unicolor. Geranomyia unicolor, Holiday, Ent. Mag. i. 



155. Curt. Brit. Ent. 573. Macq. Hist. Nat. Dipt. ii. 652, 1. 



G. inaculipennis, Curt. Brit. Ent. 573. 

 a. England. From Mr. Walker's collection. 



Div. A A. 



The first and the second longitudinal veins from the hind bor- 

 der of the wing are simple ; the third has a short, straight and up- 

 right cross vein, that joins the middle of the areolet on the fourth ; 

 the fourth has two short upright cross veins that join the third and 

 the fourth lower branches of the fifth, and form the sides of the are- 

 olet before mentioned ; the fifth sends out a fork at about half its 

 length ; this fork is shortly divided, and its upper branch is soon 

 subdivided; its lower branch forms two lesser branches, of* which 

 the upper one is simple ; the lower one is forked, and its upper di- 

 vision almost immediately sends forth another branch. 



Limnobia aberrans, n. s., mas. et fern. Fulva, thoracis disco fusco, 

 antennis pedibusque fuscis, femoribus fulvis, alis subcinereis. 



Body tawny : feelers brown, much longer than the head : eyes 

 black : disk of the chest brown : abdomen dark tawny, paler be- 

 neath : legs brown ; thighs dark tawny : wings slightly gray ; 

 brands brown ; veins dark brown ; poisers tawny, with brown knobs. 

 Length of the body 3 lines ; of the wings 7 lines. 



a. England. From Mr. Walker's collection. 



Div. B B. 



The first and the second longitudinal veins are simple; the 

 third sends forth a short, upright cross vein, which joins the fourth ; 

 the fourth bears no areolet, and has only one fork, which is near its 

 tip ; the fifth, at about two-thirds of its length, has a fork, which 

 curves downwards and joins the fourth : during this passage it has 

 three branches ; the first branch is almost immediately forked, and 

 its upper fork sends forth two short cross upright veins that rejoin 

 the fifth vein, and thereby form two areolets ; the lower fork and 

 the second branch are simple ; the third branch is very slender, and 

 has a little fork near its tip. 



F 2 



