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



behind. Mesonotiim brownish yellow, wdthout evident darker mark- 

 ings; tuberculate pits small, on"^ extreme cephalic portion of praescu- 

 tum: pseudosutural foveae pale and inconspicuous: pleura clearer yel- 

 low. AVings yellow, the stigma a trifle more brownish yellow; Sci 

 subequal to m-eu: Bs short, in alignment with, and approximately as 

 long as, Bs: B2+3 angulated to subangulated at origin; 771-cu beyond 

 midlength of the cell. Abdominal tergites dark brown, the sternites 

 and hypopygium more yellowish. $. L. 5. .5-6.5 mm.: w. T-8 mm. 

 9 . L. 5.5-6.5 mm. ; w, 6.5-7.5 mm. 



(May-July) Ont., Que., Me., N. H., Vt., Mass., N. Y., N. J., Pa., westw, to 111. 

 and Wise, southw. to N. C. and Tenn. 



Connecticut.— E. Hartland. June 8, 1929 (C. P. A.) : Granby, June 8, 1929 (C. P. A.) ; 

 Kent Falls, May 31, June 12-13. 1931 (C. P. A.); Manitic Lake, June 8-9. 1929 (C. 

 P. A.) ; Norfolk, June 9, 1929. June 12, 1931 (C. P. A.) : Phoenixville, June 14, 1933 

 (C. P. A.); Putnam, June 15. 1933 (C. P. A.); Riverton, June 12, 1931 (C. P. A.): 

 Tunxis State Park, June 12, 1931 (C. P. A.) ; Tvler Lake, June 13, 1931 (C. P. A.) : 

 Union, June 14, 1933 (C. P. A.). 



Austrolimnophila Alexander 



192U. Austrolimnophila Alexander; Arkiv for Zoologi, 13, nr. 6:4-5. 

 1034. ArchilwinophUa Alexander, hi Curran, Keys to The Families 

 and Genera of North American Diptera, p. 40. 



Antennae {$) elongate {unica and allies) or short in both sexes 

 {toxoneura and allies) ; verticils elongate, subequal to or exceeding the 

 segments : head broad, not narrowed behind. No tuberculate pits ; 

 pseudosutural foveae small, marginal in position. Wings (Fig. 

 43, F, G) with the anterior arculus lacking; Bs short or of moderate 

 length only, angulated at origin; B2 short, subequal to ^1 + 2; ^2-1-3+4 

 elongate, subequal to Bs, gently to strongly arcuated, subequal to the 

 anterior branch of Bs {wiica and allies) or .shorter than this branch; 

 m-cu beyond the fork of J/, usmiUv at or near midlength of cell Ist 

 Mo. 



The adult flies rest with the wings outspread, a habit character- 

 i.stic of generalized hexatomine crane-flies. The early stages of unien 

 are found in decaying wood. Abundant species of Austi'olimnophiln 

 are found in the temperate ])ortions of Australia, New Zealand and 

 South America, though only a few occur in the northern hemisphere. 



Key to Species 



1. Wings brownish yellow, unmarked except for the slightly darker stigma; 



7?j+3+4 short and very strongly arcuated, approximately cxie-half the length 

 of the anterior branch of Rs : antennae short in both sexes, if bent backward 

 extending about to the root of the halteres ; verticils longer than segments 



(Fig. 43, F> toxor.eura 



Wings tinged with pale brownish, sparsely to more heavily marked with 

 brown clouds, at least the anterior cord so clouded ; J^2+3+4 elongate, only 

 goil^j^ arcuated, in most cases subequal to the anterior branch of Rs ; 

 antennae of male elongate, if bent backward extending to or beyond the 

 second abdominal segment ; verticils shorter than segments 2 



2. Wings relatively narrow, the cells correspondingly narrowed, especially cell 



1st M-> which is parallel-sided ; Rs relatively elongate, much exceeding its 

 anterior branch : macrotrichia almost lacking on main stem of M. restricted 



