^O. 64J DIPTERA OF CONNECTICUT: TAXONOMY 371 



shore of Gaspe, eastern Quebec, exceptionally lar<re specimens were 

 found (the largest measurements given). 



(May-July) Ont., Que., N. B., Me., N. H., Vt., Mass., westw. to Ind. and 111., 

 southw. to S. C. 



Connecticut.— Kent Falls. May 30-31. June 12-13, 1931 (C. P. A.). 



D. rhicnoptiloides (Alex.) 



19U). Limnophila {Dactylolahh) rhicnoptiUnde.s Alexander; Cana- 

 dian Arctic Exped. 1913-18, Kept. 3, C : 6c. 



Fig. — Alexander, Ihid.. pi. 1, fig. 3 (wing). 



General coloration black, dusted with gra}-. Wings long and nar- 

 row, tending to be atrophied, especially in width; posterior marginal 

 fringe short; Rs spurred at origin, i . L. 8-9 nun.; w. 8-10 nun. 



(Aug.) Arctic North America: Ellesmereland, Lab., westw. to Canad. N. W. Terr. 

 (Arctic, Hudsonian). 



D. supernumeraria Alex. 



1929, Dactylolabis supernumeraria Alexander; Ent. News, 40:46. 



Generally similar to montann^ differing especially in the details of 

 coloration and venation. Mesonotal praescutum dark brownish gray, 

 the slightly darker brown stripes poorly defined. Wings wnth cell 

 1st M'z large, exceeding vein M^ l)eyond it. 6 . L. 7-8 mm. ; w. 8-9 

 mm. $ . L. about 8 mm. ; w. 8.5-9 mm. 



(June, July) N. B., Mc., N. H., Vt., Mass., N. Y. 



The presence of the supernumerar}^ crossvein in cell /?3 is fairly 

 constant, though individuals are occasionally found with this present 

 in one wing and lacking in the other. 



4. Subtribe Pseudolimnophilaria 



Prolimnophila Alexander 



1929. LhnnophUa {Prolhnnophi/a) Alexander; Bull. Brooklyn Ent. 

 Soc, 24:187. 



The only species of FroJimnophila is P. areolata (O. S.). a me- 

 dium-sized yellow crane-fly that is common in cool, hemlock-yellow 

 birch woodlands in June. ' The essential features of the genus lie in 

 the broken arculus. in conjunction with the very large cell 1st M2. the 

 ■ inner end of which lies far proximad of the other elements of the 

 cord. The early stages are unknown. 



Prolimnophila areolata (O. S.) (Fig. 43. E). 



1859. Limnophila areolata Osten Sacken ; Proc. Acatl. Xat. Sci. Phd- 

 adelphia, 1859 : 237. 



Figs— Osten Sacken. Mon. Dipt. N. Anier.. 4, pi. 1. fig. 6 (wing) ; 1869. .-Mex- 

 ander, Cfls. N. Y., 1. pi. 38, fig. 124 (ven.) ; 1919. Dickinson, Cfls. Wise, p. 20.1, 

 fig. 97 (ven.) ; 1932. 



Head brownish yellow; antennae short in both sexes; verticils 

 elongate, much exceeding the segments; head not strongly narrowed 



