392 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [BuU. 



The identity of Z. {P.) magdalena Dtz. (Can. Ent. 52:5-6: 1920), 

 described from the Magdalen Islands, Eastern Quebec, remains in ques- 

 tion. The description indicates that the name pertains to a mem- 

 ber of the typical subgroup, calling for a species of medium size, not 

 unlike simplex. The description of the male hypopygium further in- 

 dicates a species having the inner dististyle simple, as in simplex., and 

 the fly would run to this latter species by means of the key provided 

 at this time. 



Limnophila {PHonolahis) munda O. S. 



1869. Lhnnoplula munda Osten Sacken : Mon. Dipt. X. Amer.. 4: 

 226-227. 



Figs.— Needham. 23rd Rept. N. Y. St. Ent. for 1907. pi. 18. fig. 4 (ven.) ; 

 1908, figure erroneous. Alexander, Journ. N. Y. Ent. Soc, 24, pi. 8. fig. 4 (wing) ; 

 J916. Alexander, Cfls. N. Y., 1, pi. 40, fig. 144 (wing) ; 1919. 



^lesonotum polished black, the pleura more pruinose. Wings with 

 cell J/i variable in length, from equal to its petiole to twice this length. 

 Male hypopygium with the region of the tei'gite strongly produced 

 medially, the apex broadly and shallowly emarginate; outer disti- 

 style long and slender, its distal half more narrowed and blackened, 

 the apex bifid, before apex on inner face with a weakly toothed flange; 

 inner dististyle terminating in a simple compressed blade: aedeagus 

 not conspicuously comj^ressed. $ . L. 7-8.5 mm. ; w. 7.5-8.5 mm. $ . 

 L. 6.5-7.5 nnn.: w. 5.5-7.5 mm. 



(June, July) Out., Que., N. B., Me., N. H., Vt.. Mass., N. Y., westw. to Wise, 

 soutliw. to N. C. (Canadian). 



L. {Pnonolahis) mundoides Alex. 



1916. Limnophila mundoides Alexander: Journ. X. Y. Ent. Soc, 24: 

 120-121. 



Figs.— Alexander, Ihid.. pi. 8, fig. 3 (ven.) ; 1916. Alexander, Cfls. N. Y., 1, 

 pi. 40, fig. 145 (ven.) ; 1919. 



Polished black, including the thoracic pleura. Legs yellow, the 

 femora tipped with brown, most extensive on the fore legs where the 

 outer half is included, narrowest on the posterior legs. Male hypop.yg- 

 ium enlarged and complicated in structure. Xinth tergite produced 

 into a slender median lobe; ninth sternite produced into two longer 

 submedian lobules; basistyles with large ventral lobes that terminate 

 in dense brushes; outer dististyle a slender sinuous hook; inner disti- 

 style large and massive. $ . L. 5.4-5.6 mm. ; w. 6-6.2 mm. 



(May, June) Pa., Md., Va., N. C. nw. Fla. (Transition). 



L. (Prloitolabh) rufibasis O. S. (Figs. 44. A : 45, L). 



1859. LinniophiJa {Prionolahis) rufibasis Osten Sacken: Pi-oc. Acad. 

 Xat. Sci. Philadelphia, 1859 : 239. 



Figs. — Osten Sacken, Mon. Dipt. N. Amer., 4, pi. 2, fig. 3 (wing), pi. 4, fig. 27 

 (hyp.) ; 1869. Snodgrass, Trans. Amer. Ent. Soc.. 30, pi. 9, fig. 17, 21-23, 25 (hvp.) : 

 1904. Johnson, Proc. Boston Soc. Nat. Hist., 34, pi. 16, figs. 21-23 (ven.) ; 'l9()9. 

 Alexander, Psyche. 18, pi. 16, fig. 11 (hyp.): 1911. Alexander, Cfls. N. Y., 1, pi. 

 40, fig. 142 (wing) : 1919. Crampton, Trans. Amer. Ent. Soc, 48. pi. 10, fig. 36 

 (hvp.): 1923. Dickinson, Cfls. Wise, p. 204, fig. 101 (wing): 1932. 



