56 LIST OF DIPTERA. 



lower division descends for a short space and then forms an angle, 

 whence it proceeds straight to the tip of the wing. 



Limnobia attenuata, n. s., fem. Nigro-cinerea, thoracefulvo obsolete 

 trimaculato, abdomine apice ferrugineo, antennis nigris, pedibus 

 fuscis, femoribus fulvis, alis limpidis. 



Body grayish black, slender : eyes and feelers black, the latter 

 a little longer than the head : chest tapering in front like a neck, 

 with an indistinct pale tawny spot on each side, and another in 

 front : abdomen very long, its tip ferruginous : legs brown ; thighs 

 dark tawny : wings colourless ; veins brown ; brands none ; poisers 

 pale yellow. Length of the body 4 lines ; of the wings 8 lines. 



a. Hammerfest, Finmark. From Mr. Walker's collection. 



Div. K K. 



The first and the second longitudinal veins are simple ; the third 

 has a short cross vein which joins the middle of the areolet on the 

 fourth ; the fourth has two short cross veins which form the sides of a 

 rather large areolet. and join the lower division of the fifth vein ; the 

 second of these connecting-veins forms a slight angle, from whence a 

 vein proceeds to the lower border near the tip of the wing ; the fifth, 

 at about one-third of its length, sends forth a branch, which at first 

 forms a very acute angle with it, and afterwards descends into the 

 disk of the wing, and joins the inner upper angle of the areolet : in 

 its course it sends forth three branches ; of these, the first is shortly 

 forked, the second is simple, the third forms the upper side of the 

 areolet and is forked near the tip of the wing. 



Limnobia separata, n. s., mas. Nigro-cinerea, thorace fiavo quadri- 

 vittato, abdominis suturis pallidioribus, apice fulvo, pedibus 

 fuscis, femoribus fulvis, alis limpidis. 



Body slender : head and chest grayish black ; the latter with 

 two yellow stripes on each side, connected in front : eyes and feelers 

 black ; the latter tawny at the base, a little longer than the head : 

 abdomen grayish black ; sutures of the segments paler ; the tip 

 tawny : legs brown, long and slender; thighs tawny : wings colour- 

 less ; brands none ; veins brown ; poisers pale yellow, with brown 

 knobs. Length of the body 2| lines ; of the wings 6 lines. 



a. Hammerfest, Finmark. From Mr. Walker's collection. 



