1016 CHARLES PAUL ALEXANDER 



Head capsule and mouth parts of almost normal tipuline appearance. Mentum with 

 outer plate forming the unusually long apical point, inner plate adding three teeth on either 

 side, margins bulging. Antenna with apical papillae somewhat flattened, surrounded by 

 three sense pegs. 



(Described from abundant specimens, Coy Glen, Ithaca, New York, April 23, 1914.) 



Tipuline No. 2 



The larva discussed below is known only from a single, apparently 

 fully grown, specimen. The writer has no clue as to which species it 

 represents, altho from the larval structure it is obviously allied to Tipula 

 selene Meig. of Europe. 



Larva. Length, 23 mm. 

 Diameter, 3 mm. 



Coloration, a rather uniform pale yellowish or reddish brown. 



Body covered with a rather sparse, long pubescence, setae unusually long and powerful. 

 Chaetotaxy as follows: tergites (Plate XCVI, 534) with two strong lateral setae near pos- 

 terior margin and an additional one at extreme lateral margin of ring; pleural setae, one on 

 basal ring, two, one behind the other, on posterior ring; sternites with a transverse pair of 

 powerful setae near extreme lateral margin, and two anterior pairs of much smaller setae. 

 Spiracular disk (Plate XCVI, 535) with four elongated, cylindrical, chitinized horns which 

 are narrowed to the acute, blackened, slightly curved tips; longer dorsal pair rather closely 

 approximated, lying almost parallel, with tips a little curved dorsad; shorter and more 

 slender lateral horns directed ventrad at tips, at base on inner face with a powerful seta, 

 the large black spiracles lying above base of lateral horns; ventral lobes, if present, very 

 blunt and indistinct. Anal gills not protruded in the only specimen available. 



Head capsule and mouth parts rather normal but showing the following points of difference 

 from the usual Tipula type: Mentum almost completely split, apical point long and narrow; 

 the three lateral teeth on either side blunt, lateral pair tending to be reduced. 



Hypopharynx with five blunt teeth. Antenna short, stout, length only about twice 

 diameter, at tip with a subglobular, feebly chitinized papilla. 



(Described from a single larva found beneath a stone in a field near Taughannock Falls, 

 Tompkins County, New York, May 1, 1912.) 



Genus Nephrotoma Meigen (Gr. kidney + I cut) 



1800 Pales Meig. Nouv. Class. Mouch., p. 14 (nomen nudum). 



1803 Nephrotoma Meig. Illiger's Mag., p. 262. 



1834 Pachyrrhina Macq. Hist. Nat. Ins., Dipt., vol. 1, p. 88. 



The large genus Nephrotoma, including some one hundred and fifty 

 described species, is very close to Tipula in all respects. The writer 

 cannot attempt to separate the immature stages of the genus from those 

 of Tipula, on the scanty material that has been* available for study. 



