ALEXANDER, CRANE FLIES FR. S. CHILE & TIERRA D. FUEGO. 13 



BrGOT's description and colored figure (Mission Scientifique 

 du Cap Horn, 1882—1883, vol. 6, Zoologie, part 2, pl. 1, 

 fig. 2; 1891) his species is not unlike Tipula hella Loew of 

 the Nearctic region, with most of the wing dusky but with 

 cell 1st M2, R5, tlie cephalic half of Cui and with portions 

 of cells i?/, C and Se near the stigma påle. Tipula ona has 

 the påle areas much more extensive, including the broad 

 bases of the second to fifth posterior cells. This latter spe- 

 cies is from the eastern pampas section of Tierra del Fuego, 

 whereas T. rufirostris and most of the other Tipulidae de- 

 scribed by Bigot from Cape Horn will be found in all pro- 

 bability to be restricted to the more monntainous and fore- 

 sted western parts of the archipelago. 



Tipula ona is named after the Indian tribe inhabiting 

 the plains and timbered regions of central, northern and 

 eastern Tierra del Fuego (see Hatcher, Reports of the 

 Princeton University Expeditions to Patagonia, 1896 — 1899, 

 vol. 1, Narrative and Geography, p. 272; 1903). 



Tipula chilensis, sp. n. 



Close to T. philippiana Alex.; antennae with the basal 

 segments yellow, the intermediate segments bicolored; meso- 

 notal praescutum dark brown with three bluish gray stri- 

 pes; pleura gray with a narrow brown longitudinal stripe; 

 wings whitish subhyaline, spotted and striped with brown 

 and gray; abdomen yellow, trivittate with brown. 



Female. — Length about 21 mm.; wing about 18,4 mm. 



Frön tal prolongation of the head dull brownish yellow; 

 palpi dark brown. Antennae with the first segment brown, 

 heavily gray pruinose; segments two to four yellow; the 

 intermediate segments bicolored, the basal enlargement dark 

 brown; distal segments dark brown. Head light gray, the 

 vertical tubercle paler, almost white; vertex sublaterally 

 tinged with brown. 



Mesonotal praescutum dark brown with three bluish gray 

 stripes that are narrowly margined with dull påle gray; the 

 median stripe is split by a capillary brown line that conti- 

 nues to the anterior margin; in addition there is on either 

 side, beginning at the suture, where all three stripes are 



