30 ARKIV FÖR ZOOLOGI. BAND 13. NIO 6. 



than the lateral lobes, gradually narrowed to the tip; lateral 

 lobes broad at the base, rapidly narrowed to the subacute 

 tips. 



Habitat. — Territory of Magallanes, Chile. 



Holotype, J*, Punta Arenas, Straits of Magellan (O. Nor- 

 denskiöld). 



Type in the Riksmuseum in Stockholm. 



Tipula duséni, sp. n. 



Belongs to the glaphyroptera group; close to glaphyroptera 

 Philippi; antennae moderately elongated, the intermediate 

 segments distinctly bicoulored; mesonotal praescutum buffy 

 with three brown stripes, the median stripe bisected by two 

 narrow gray lines; wings rather dark brown, the subcostal 

 cell with two large dark brown blotches; a narrow trans- 

 verse whitish band beyond the stigma, extending to beyond 

 cell 1st M2; abdomen brownish yellow, trivittate with dark 

 brown; eighth sternite of male hypopygium with a bifid 

 appendage. 



Male. — Length about 16 mm ; wing, 16 mm. 



Frontal prolongation of the head dark brown; palpi påle 

 brown, the last segment darker. Antennae with the scapal 

 segments dull yellow; first flagellar segment brownish yellow 

 basally, clearer yellow beyond; flagellar segments two to five 

 with the basal enlargement black, the pedicel yellowish 

 brown; remaining flagellar segments dark brown. Head 

 dark. 



Mesonotal praescutum buffy with three dark brown 

 stripes, the interspaces with a few brown setigerous punc- 

 tures and with a small brownish mark near the suture; the 

 median stripe is entire behind only, for most of its length 

 with a broad gray line on either side of a brown median 

 line of nearly equel width; lateral stripes narrow; remainder 

 of the mesonotum gray, the scutal lobes marked with brown. 

 Pleura clear light gray, dorso-pleural membrane dull yello- 

 wish buff, sparsely marked with brown. Halteres dark 

 brown. Halteres dark brown, the base of the knob a little 

 paler. Legs with the coxae påle yellow, sparsely gray prui- 

 nose; trochanters dull yellow; femora dull brownish yellow, 



