Xhe Crane-Flies of New York — Part I 917 



12. Cross-vein r removed some distance from the tip of Ri, so that this distance is from one 



and one-half to two times the length of the radial cross- vein; tuberculate pits 



present 13 



Ultimate segment of Ri curved to the costa and scarcely longer than the cross-vein r 



itself; tuberculate pits lacking in all species except fratria 22 



(L. marchandi should be interpreted as coming in this division, from the evident 

 relationship with L. aJleni.) 



13. Cell 1st Ml verv much elongated, the inner end lying far inside the level of the cord. 



[Proc. Acad. Nat. Sci. Phila., p. 237. 1859.] (Plate XXXVIII, 124.) 



L. areolata O. ?. 

 Cell 1st Ml not greatly elongated, the inner end at the level of the cord 14 



14. /?2+ 3 longer than cell /?: alone. [Proc. Acad. Nat. Sci. Phila., p. 238, pi. 4, fig. 26. 1859.] 



(Plate XXXVIII, 127.) L. ultima 0. S. 



Ri-\-3 not longer than cell R^ alone 15 



15. Cell M\ very short, not longer than the basal deflection of Cui. [Proc. Acad. Nat. Sci. 



Phila., p. 237. 1859.] (Plate XXXVIII, 125.) L. brevifurca O. S. 



(Specimens of L. brevifurca are rather frequently found in which the fusion of M1+2 



is continued to the wing margin , in which case the species would run down to couplet 



41 ; such abnormal specimens are rare, however, and usually have one of the wings 



normal.) 



Cell Ml long, more than twice as long as the basal deflection of Ciu 16 



16. Head narrow, prolonged behind; cells Ri and 1st Mi longer than cell Ri, so that the cord 



is not in a straight line; radial and medial veins long, slender, arcuated; second anal 



vein incurved at the tip. (Subgenus Pseudolimnophila Alex.) 17 



Head broad, not narrowed behind; cells Rs, Ri, and 1st M2 with their inner ends about 

 on a level ; radial and medial veins stout and straight ; second anal vein not incurved at 

 the tip. (Subgenus Eulimnophila A.lex.) 20 



17. Wings with small brown dots on the cross- veins and at the forks. [Proc. Acad. Nat 



Sci. Phila., p. 236, pi. 4, fig. 24. 1859.] (Plate XXXIX, 135.). . . .L. luteipennis O. S. 



Wings clear, unspotted 18 



IS. Thorax clear blue-gray. [Mon. Dipt. N. Amer., part 4, p. 219. 1869.] (Plate XXXIX, 



134.) L. inornata O. S. 



Thorax brownish without gray color 19 



19. Pleura of thorax grayish, unmarked; size small. [Mon. Dipt. N. Amer., part 4, p. 218. 



1869.] L. contempta 0. S. 



Pleura of thorax dull yellow, with a conspicuous dark brown stripe extending from 

 the cervical sclerites to the postnotum; size larger. [Proc. Acad. Nat. Sci. Phila., 



p. 592, pi. 25, fig. 3. 1914.] (Plate XXXIX, 136.) L. nigripleura A. & L. 



(In the writer's key to the species of the luteipennis group [Proc. Acad. Nat. Sci. 

 Phila., p. 593, 1914], in couplet 4 L. contempta is given as being a larger species 

 than L. nigripleura. This Is erroneous, L. contempta being the smallest species of 

 the group. It is more southern in its distribution than L. nigripleura.) 



20. Wings narrow, grayish; stigma distinct, hairy; antennae of male elongated. [Limnobia 



lenuipes Say. Journ. Acad. Nat. Sci. Phiia., vol. 3, p. 21. 1823.] (Plate XXXVIII, 



^1-1-) L. tenuipes (Say) 



Wings broader, more yellowish brown; stigma not distinct; antennae of male short. .21 



21. Body opaque; front gray. [Proc. Acad. Nat. Sci. Phila., p. 237. 1859.] (Plate 



XXXVIII, 122.) L. imbeciUaO. S. 



Body shiny reddish yellow; front yellowish red. [Mon. Dipt. N. Amer., part 4, p 212 

 1869.] (Plate XXXVIII, 123.) L. recondita O. S. 



22. Very large species, wing over 18 mm. (Subgenus Eutonia v. d. W.) 23 



Smaller species, wing under 15 mm 24 



