408 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [Bull. 



tinge, the stigma darker; i?i + 2 and R2 subequal; ^^2+3+4 about one- 

 third to one-half longer than in-cu; petiole of cell Mx about one-half 

 the cell; cell 1st il/2 , relatively small. xVbdominal tergites weakly bi- 

 colorous, brownish black, the apices more reddish brown; sternites 

 uniformly yellow ; a narrow black subterminal ring in 5 ; hypopygium 

 obscure yellow. Male hypopygium (Fig. 45, K) with the basistyle 

 having the mesal margin crenate; outer face of basistyle, near apex, 

 with a group of large coarse setae; outer dististyle unusually com- 

 pressed, narrowed to the bidentate blackened apex; inner dististyle 

 short, roughly triangular in outline, the inner portion with a few mi- 

 croscopic spines; gonapophyses appearing as yellow decussate blades, 

 their outer margins microscopically toothed ; aedeagus short. 5 . 

 L. 5. .5-6.5 mm. ; w. 6.5-8 mm. $ . L. 7-7.5 mm. ; w. 7.5-8 mm. 



(June) Mass., N. Y., southw. to Md., Ind., N. C. and Tenn. (Transition). 



L. {Limnophila) poetica O. S. (Figs. 44, E; 45, S). 



1869. LimnofhUa 'poetica, Osten Sacken: Mon. Dipt. N. Amer., 4: 



207-208. 



Figs.— Needham. 23rd Kept. N. Y. St. Ent. for 1907, pi. 18, fig. 3 (wing) ; 

 1908. Alexander. Cfls. N. Y., 1, pi. 38, fig. 116 (wing) ; 1919. Dickinson, Ctls. 

 Wise, p. 204, fig. 100 (wing) ; 1932. 



General coloration of mesonotum yellowish to brownish yellow, 

 subnitidous; tuberculate pits lacking; pseudosutural foveae small; 

 pleura yellow, somewhat darker in female. Ant-ennae ( $ ) elongate, 

 if bent backward extending to about opposite one-third the length of 

 the long abdomen ; flagellar segments beyond first black ; antennae in 

 2 shorter, extending about to root of haiteres. Head with center of 

 vertex darkened. Haiteres with darlcened knobs. Legs with femora 

 brownish yellow, the tips dark brown to black ; tibiae yellowish brown, 

 the tips, together with all tarsi, blackened ; legs of female shorter and 

 more conspicuously hairy. Wings (Fig. 44, E) yellowish, with a very 

 restricted brown pattern, including the stigma and narrow seams at 

 origin of Rs and along cord; wrings of female darker and somewhat 

 reduced in size. Abdomen ( $> ) elongate, yellow, with a narrow black- 

 ened subterminal ring. Male hypopygium (Fig. 45, S) with the basi- 

 styles bearing a truncated lobe on mesal face near base; outer disti- 

 style slender, narrowed to the small bidentate apex; gonapophyses ap- 

 pearing as long sinuous horns, each with a small lateral branch at near 

 midlength. $ . L. 9-9.5 mm. ; w. 8.5-9 mm. 2 . L. 8.5-9 mm. ; w. 

 about 8 mm. 



(May-Aug., especially June) Ont., Que., northwestw. to Alta. and Alaska, westw. 

 to Mich., Wise, and 111., southw. to Mass. (Hudsonian, Canadian). 



Shannonomyia Alexander 



1929. Shannonomyia Alexander; Dipt. Patagonia and S. Chile, 1:: 

 142-143. 



A single species, of discordant affinities, comes within the present: 

 faunal limits. In its general appearance and venation, this fly, S. 



