— 539 



UsDEScniBED CnA.\'E-FLiES is THE Pabis Moseum 



(TiPULIDAE, DiPTERa) : 



Part HI 



( Conhniied) , 



By Charles V. Alexandek, 

 PI). [)., LrhniiH, III.. l . S. A. 



Tipula bifida iiov. Sj). 



Genei'al coloration grey. meeonotal praesculum wilh four browu slri- 

 pes; anleiinnc of iiiale sliorf, liasal segments yellowisli: lips oC l'emora a''<l 

 tihiae dark brown, cinws of maie toot!ie<l ; wings pale grev. marmoratc 

 with brown and subliyaliiie: lip of /(2 persistent; maie hypopygium witli 

 the ninlh tergile completely bisected medially; ninlii pleurite witb a con- 

 spicuoiis black s{)ine; eightli sternite unarmed. 



Mâle. — Lengtli about \ti niiu.; wiug, 17,6 mm. 



Frontal prolongation of head pale brownish yellow : paipi brown. Au- 

 tennae of maie short; scape and basai flagellar segments uniformiy brown- 

 ish yeilow, ihe terminal llagellar segments daikeried ; lirsl sca|»al .segment 

 elongate: liist llagellai' segment shorler than llie combined s<rond and 

 third. Head iight fawn-jeUou, Ihe ceutei- of the verlcx. faintly inln- 

 scated. 



Mesonotal praescutum Iight grey witb four brown stripes, the inler- 

 mediale pair separated by a capillarv line: remainder of mesonotum Iight 

 grev, ihe scutal lobes and a médian line on posnolnm brown. Pleura 

 Iight grey. Mesoslernum slightly daiker. Haltères brown, ihe knobs 

 darkei' brown, their apices broadly wliilish. Legs wilh llie co.\ae obscure 

 yellowish buif: Iroclianters jellow; femora brownish yellow, the lips 

 broadly dark brown; libiae Iight brown, the lips broadl\ infuscated: re- 

 mainder of legs brow^u; metatarsi longer than tibiae; larsal claws of maie 

 with basai toolli. Wings |)ale git'\, marmorate with brown and subhya- 

 liue; cell C brownish yellow, darkest basally; cell Se brown; conspicuous 

 brown: clouds in the base of tells l\ and l/, at origin of Rs, af stigraa 

 and suriounding the foik of Vis; the subhpliue aicas include a large 



