ALEXANDER, CRANE FLIES FR. S. CHILE & TIERRA D. FUEGO. 25 



at the dorso-proximal angle of the sternite is a small glo- 

 bular or subglobular lobe that is covered with a short opp- 

 ressed pubescence and sometimes armed with a dorsal pencil 

 of stiff setae; this structure lies immediately dorsad of the 

 oylindrical pleural arm but is apparently borne by the 

 sternite. 



The wing-pattern varies in the different species. In the 

 generallized forms {T. fuegiensis, T. patagonica), the wing is 

 darkened and with but few white markings, but in the spe- 

 ciallized species (T. glaphyroptera, T. duséni) the pattern is 

 conspicuously diversified, there being a conspicuous white 

 transverse band beyond the stigma, continued across cell 

 1st M2 into the base of cell M4. It is probable that other 

 Southern Patagonian and Chilian species, now known only 

 from the female sex, will be found to belong to this group. 

 Such possibilities are T. philippiana Alex., T. chilensis, 

 T. ona, T. rufirostris Big., T. higotiana and probably 

 others. 



Tipula patagonica, sp. n. 



Belongs to the glaphyroptera gr on-p; SLntennsieTSitherloug, 

 black, the second scapal segment conspicuously light orange; 

 mesonotum dark gray, the praescutum with but two indi- 

 stinct brownish submedian lines; wings brown, with a small 

 whitish area beyond the stigma and two others near the 

 ends of the basal cells; abdomen buffy yellow, trivittate 

 with dark brown; eighth sternite of the male hypopygium 

 with a trifid appendage. 



Male. — Length 14 mm.; wing, 14,5 mm. 



Female. — Length about 17 mm.; wing, 12,5—13,5 mm. 



Frontal prolongation of the head short and stout, dark 

 brown; nasus stout; palpi dark brown. Antennae rather 

 elongate in the male sex, if bent backward extending to 

 some distance beyond the wing-root; first scapal segment 

 dark brown, the second conspicuously light orange; flagellum 

 brownish black, the segments moderately incised beneath. 

 Head dark gray, the frontal tubercle indistinctly margined 

 in front with påle. 



