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



tense median darkening. Legs stout, obscure _yellow. the tips of the 

 tibiae and the tarsi darkened. Wings with a strong yellow tinge, 

 without a stigmal darkening. Abdomen reddish yellow, i . L. 6-7.5 

 mm. ; w. 7.5-9 mm. 



(Late Apr.-June) OhI., Mass. and N. Y., southw. to vicinity of D. C. (Canadian, 

 Transition). 



Subgenus Eutonia van der Wulp 



1874. Eutonia van der Wulp; Tijdschr. v. Ent., 17: 147. 



Two very large species of lAmnopMla fall in the present subgenus. 

 These are by far the largest and most conspicuous of all local members 

 of the genus, rivalling in stature and coloration the medium-sized 

 species of Tipula. The adult flies of alleni are found in low boggy 

 woodlands, of marchandi more usually in shaded ravines. The early 

 stages are not known but from tent-trap captures of the adults are 

 presumably to be found in organic mud. 



Key to Species 



1. Thoracic dorsum gray, the praescutum with three velvety-brown stripes, the 

 middle one narrowly split by a line of the ground-color, the posterior inter- 

 spaces reddish brown ; ground-color of wings brownish yellow ; basal ab- 

 dominal tergites yellowish, without conspicuous brown setigerous punctures : 



vein R-, subequal'to /?i+2 (Fig. 43, P) alleni 



Thoracic dorsum gray, the praescutum with three narrow velvety-brown 

 stripes, the middle one split by a broad pale line ; ground-color of wings 

 whitish-hyaline; basal abdominal tergites gray, with conspicuous brown 

 setigerous punctures"; vein R2 about one-half R^i marchandi 



Limnophila (^7//'o^i?V/) alleni dohns. (Fig. 43, P). 

 1909. L'imnophUa alleni Johnson: Proc. Boston Soc. Xat. Hist., 34: 

 12G-127. 



Figs. — Johnson, Ih'id., pi. 16, fig. 18 (wing). Alexander, Journ. N. Y. Ent. 

 Soc, 24, pi. 8, fig. 1 (wing) ; 1916. Alexander, Cfls. N. Y., 1, pi. 39, fig. 140 (wing) ; 

 1919. 



Legs 3'ellow, the tips of femora and tibiae conspicuously black- 

 ened: tarsi broAvnish black. Wings heavily patterned with dark 

 brown, the major areas being costal in distribution, leaving the small 

 stigma yellow; cell l8t M2 longer than wide. Basal abdominal seg- 

 ments with caudal margins of tergites more or less darkened medially : 

 outer segments and genitalia of both sexes dark brown. $ . L. 23-25 

 mm.; w. 17-18 mm. ?. L. 27-3G mm.; av. 20-25 mm. 



(June) N. H., Vt, N. Y.. westw. to O. (Canadian). 



L. (Eutonm) marchandi Alex. 



1916. Limnoph'tla marchandi Alexander; Journ. X. Y. Ent. Soc. 24: 

 118-120. 



Figs.— Alexander, Ibid., pi. 8, fig. 2 (wing) ; 1916. Alexander, Cfls. N. Y., 1, 

 pi. 39, fig. 141 (wing) ; 1919. 



Generally similar to last, ditfering especially in the coloration of 

 the body and wings, and in the details of venation. Wings with a 



