1002 CHARLES PAUL ALEXANDER 



line; on disk, between spiracles, two indistinct dusky spots; lobes fringed with rather short, 

 pale hairs which are narrowly interrupted between lobes. Spiracles irregular, roughly 

 triangular. Anal gills four, slender, posterior pair the larger (Plate XCII, 506). 



Head capsule as in genus. Labrum and maxilla-very densely fringed with long golden- 

 yellow hairs. Mentum (Plate XCIII, 513) with two flattened lateral teeth, the median 

 point elongated; mentum very deeply split behind. Hypopharynx (Plate XCIII, 514) with 

 but three evident teeth, the lateral teeth very broad, flattened. (In some specimens these 

 teeth are all very blunt, so that the anterior margin of the hypopharynx appears merely 

 crenulate.) Antenna with apical disk very flattened. Mandible (Plate XCIII, 515) with 

 a dorsal tooth and a powerful ventral tooth. 



Pupa. Length: male, 12 mm.; female, 12.5-13 mm. 



Width, d.-s.: male, 1.6-1.7 mm.; female, 1.8-1.9 mm. 

 Depth, d.-v.: male, 1.6 mm.; female, 1.7-1.8 mm. 



Coloration dark brown; dorsum of thorax and abdomen, and face, more reddish brown. 



General features as in Tipula collaris. Form slender. Pronotal breathing horns long 

 and slender, dark-colored, divergent at tips. Antenna elongate. Wing sheaths ending 

 opposite apex of second abdominal segment. Leg sheaths long, extending to beyond mid- 

 length of fourth abdominal segment. Male cauda with dorsal lobes of genitalia short, blunt; 

 ventral lobes produced caudad into slender, blunt lobes which are transversely wrinkled, 

 separated by a U-shaped notch, at base on outside with. a prominent spine. Female ovi- 

 positor elongate; dorsal valves narrowed to the blunt tip; ventral lobes stout, a little shorter 

 than dorsal valves, tips strongly divergent; the six dorsal lobes of cauda spinous-tipped, 

 sharply pointed. 



Nepionotype Ithaca, New York, April 18, 1917. No. 6-1917. 

 Neanotype. With type. No. 7 1917. 

 Paratypes. Numerous larvae and pupae. 



Tipula collaris Say 



1823 Tip-da collaris Say. Journ. Acad. Nat. Sci. Phila., vol. 3, p. 23. 



Larvae and pupae of Tipula collaris, a common vernal crane-fly, 

 occurred frequently beneath saturated moss (Amblystegium irriguum 

 [Wils.] B. & S.) in Needham's Glen, Ithaca, New York, on April 17, 

 1917. Their associates are noted under the account of T. oropezoides 

 (page 1001). In the same moss areas occurred numerous small red-backed 

 salamanders (Plethedon cinereus), which probably fed on the insect deni- 

 zens of the place. Specimens emerged in the writer's breeding jars as late 

 as May 10. 



The adults are on the wing during April and May, some persisting into 

 early June in cool northern woods. The life history undoubtedly requires 

 a year for its completion. 



Larva. Length, 21.5-25 mm. 

 Diameter, 2.5-3.5 mm. 



