1006 CHARLES PAUL ALEXANDER 



This is evidently the larva taken by Dr. Needham in the Adirondacks 

 and referred by him with some doubt (Needham and Betten, 1901:575- 

 576) to T. abdominalis. This dubious reference has created considerable 

 confusion ever since the species was figured on the cover of Entomological 

 News under the facetious name " Quisnam sexcaudatusf " Malloch (1915- 

 17 b: 200-201) mentions the same larva under the name T. abdominalis. 

 As stated elsewhere, the larva of abdominalis is very different. 



Larva. Length, 45-55 mm. 



Diameter, 4.8-6.8 mm. 



Coloration above, dark brown or brownish green; segments beautifully marked with small 

 white spots, especially anterior segments; a broad, dark brown, median stripe, and a more 

 or less distinct pale lateral stripe (in preserved specimens the pleura is usually dark brown, 

 more distinct behind, with numerous pale white dots); sternum dark greenish. (In older 

 specimens the color is very dark and the pattern is more or less obliterated.) 



Form stout, terete. Body smooth, segments with indistinct posterior tubercles. Chaeto- 

 taxy very weak, a few weak pleural setae on posterior ring, sternal and tergal setae minute. 

 Spiracular disk rather small, surrounded by six subequal, moderately narrow, lobes which 

 are fringed with short hairs; margins of disk and lobes somewhat as in T. bella, each lobe with 

 a delicate capillary brown line; two brown spots beneath each spiracle. Spiracles small, 

 separated by a distance about equal to twice diameter of one. Anal gills six, very long and 

 slender (Plate XCII, 508). 



Head capsule as in genus. Men turn broad; anterior margin nearly transverse, with three 

 subacute teeth on either side, median point not conspicuously elongated. 



Pupa.- Length of cast skin, about 32-35 mm. 



Characters almost as in T. bella. Pronotal breathing horns short, cylindrical, tips not 

 expanded. Abdominal spines prominent, projecting, few in number, on intermediate ter- 

 gites 9 or 10; pleurites with a single strong spine on each ring; sternites with a posterior row 

 of seven or eight strong spines; on segments 5 to 7 two strong spines at base of posterior 

 ring, those of seventh segment the largest. Cauda almost as in T. bella. 



Nepionotype Ithaca, New York, April 26, 1917. No. 16-1917. 

 Neanotype. Cast pupal skin, reared May 13, 1917. 

 Paratypes. Larvae and cast pupal skins from type locality. 



Tipula dejecta Walk. 



1856 Tipula dejecta Walk. Ins. Saunders, vol. 1, Dipt., p. 442. 

 1901 Tipula fumosa Doane. Journ. N. Y. Ent. Soc., vol. 9, p. 99. 



Tipula dejecta is a characteristic vernal species flying in April and May. 

 The flies are notable inhabitants of swamps, especially alder swamps. 



On April 20, 1917, the writer found larvae of this fly in Larch Meadows, 

 near Ithaca, New York, in association with larvae of Rhamphidia main- 

 ensis, Pseudolimnophila luteipennis, and other swamp inhabitants. The 



