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



S , at most the eighth segment weakly iiif uscated. Male hypopygium 

 with the branched gonapophyses strongly blackened; aedeagus weak, 

 equal in length to its subtending apophyses. S. L. about 9 mm.; w. 

 9 mm. ? . L. 8.5-10 mm. ; w. 8.5-9.5 mm. 



(June) Que.. Vt., N. Y. Especially characteristic of cold Iris bogs. The unusually 

 liaiidsonie light yellow wings distinguish the fly from the closely allied consimilis 

 and fti>nidicosta. 



L. (/^////Ziri6>/'m) neadusta Alex. (Fig. 46, F). 



19^7. Lvninophila {Phylidorea) neadusta Alexander; Bull. Brooklyn 

 Ent. Soc, 22:110-111. 



Belongs to the adusta gr(jup. Closely allied and generally sim- 

 ilar to adusta, differing especially in the structure of the male hypopyg- 

 ium. Mesonotum darker colored, brown medially. Legs with the tips 

 of the femora rather broadly inf uscated. Male hypopygium (Fig. 

 46, F) with the median lobe of ninth tergite much more extensive, its 

 caudal margin with a very shallow notch; outer dististyle with the 

 apical point long and slender; outer gonapophyses and aedeagus very 

 long and unusually slender. $ . L. about 8.5 mm. ; w. 9 mm. 



(June) N. Y. 



L. {Phylidorea) nigrogeniculata Alex. 



1926. LimnophiJa {Phylidorea) nigrogeniculata Alexander: Bull. 

 Brooklyn Ent. Soc, 21 : 114-115. 



Belongs to the similis group, conshnllis subgroup. Genei-al color- 

 ation shiny ferruginous. Antennal flagellum yellow; head irray. 

 Wing with ^2+3^4 having macrotrichia throughout its length. Ab- 

 domen obscure yellow, with a brownish black subterminal ring {$). 

 Male hypopygium with the outer dististyle unusually slender and 

 heavily chitinized, terminating in two acute teeth; branched gona- 

 pophyses with the arms unusually long and slender, blackened. $ . L. 

 5-5.5 mm.; w. 6-6.5 mm. ?. L. 6.5-8 mm.; w. 6-8 mm. 



(July) Tenn. 



Amply distinct from the other members of the subgroup in the nar- 

 rowly blackened tips of the femora. 



L. (/^AyZ/V/6>r(g«) novae-angliae Alex. (Fig. 46, G). 

 1914. Limnophila novae-angliae Alexander; Proc. Acad. Nat. Sci. 

 Philadelphia, 1914:594. 



Figs.— Alexander, Ihid., pi. 25, fig. 4 (ven.) ; 1914 Alexander, Cfis. N. Y., 1, 

 pl. 39. fig. 131 (ven.) ; 1919. 



lielongs to the platy phallus group. General coloration shiny red- 

 dish yellow, the mesonotum without markings. Head chiefly dark. 

 Legs yellow, the tips of femora aud tibiae narrowly darkened. ^ Wings 

 with a strong yellow to brownish yellow tinge, the stigma a trifle 

 darker. iSIale hypopygium (Fig. 46,' G) with the region of the tergite 

 strongly produced, narrowed to a truncated lobe that bears several long 

 powerful setae: outer dististvle entii-ely glabrous, narrowed into a 



