488 PROCEEDINGS OF THE ACADEMY OF [Sept., 



to six a conspicuous rounded brown spot on the sides of the segment 

 near the base; sternites one to five yellow more or less suffused with 

 brown, the terminal sclerites yellowish. Male hypopygium with 

 the ninth tergite (see Plate XIX, fig. 50) rather prominent, flattened, 

 the caudal margin with a broad and deep U-shaped notch and trifid, 

 consisting of the flattened subacute lateral loljes and an acute median 

 point; an indistinct median dorsal furrow. Ninth pleurite promi- 

 nent, complete, rounded oval. The outer pleural appendage (see 

 Plate XX, fig. 65) is situated near the end of the sclerite, strongly 

 arcuated in the form of a boomerang, pale, covered with setigerous 

 papillae, the apex ending in a conical pale horny point. The inner 

 pleural appendage (see Plate XX, fig. 66) is more chitinized, the 

 apex heavily chitinized and blackened, deeply split into two lobes; 

 around the notch on the inner face of the appendage is a group of 

 about twelve prominent setigerous tubercles; a group of about four 

 similar tubercles down the inner side of the appendage; outer face 

 of this organ with several prominent subparallel ribs. The penis- 

 guard viewed from the side (see Plate XXI, fig. 79) deeply bilobed 

 by an oval-rounded notch; the ventral margin is produced into the 

 gonapophyses which are much longer than the penis-guard which 

 they subtend (see Plate XXI, fig. 78) ; these latter are flattened and 

 blade-like, the apex produced into a point. Ninth sternite scarcely 

 if at all notched medially beneath, the caudo-lateral angle beneath 

 the pleurite with a broadly rounded lobe which is densely covered 

 with tubercles bearing long yellowish hair, these tending to be con- 

 torted at their apices. Eighth sternite not projecting, the caudal 

 margin straight or nearly so, bearing a tuft of long yellow hairs on 

 either side, including two. long, powerful, chitinized, decussate bristles. 



Habitat. — Eastern United States. 



Holotype, cf, Kentucky. 



Allotype, 9 , District of Columbia. (In copulation with one of 

 the paratypes and pinned with it.) 



Paratypes, 3 cf 's. District of Columbia. 



All of the types, with the exception of a paratype which has been 

 retained, are in the collection of the Museum of Comparative Zoology, 

 where they form part of the Loew collection. 

 Tipula loewiana sp. n. 



Coloration light gray, the thorax marked with brown; male 

 hypopygium with the ninth tergite small, the caudal margin with a 

 V-shaped notch; the pleurite is produced caudad into a slight 

 flattened expansion. 



