28 ARKIV FÖR ZOOLOGI. BAND 13. N:0 6. 



line produced inte a slender horn that is directed caudad 

 and diverges from its mate; this horn is considerably longer 

 than the corresponding structure in T, patagonica. Ventral 

 caudal angle of the ninth pleurite produced caudad into a 

 long-cylindrical arm that bears long, coarse tawny hairs at 

 the tip; immediately dorsad of these lies a small rounded 

 light yellow lobe on either side, the outer face microscopi- 

 cally pubescent. The eighth sternite (plate 1, fig. 6) bears a 

 conspicuous appendage that is profoundly trifid, the median 

 blade slender, blackened, the lateral blades broad, flattened, 

 with the tips feebly but distinctly bilobed. 



Habitat. — Tierra del Fuego. 



Holotype, J*, Rio Grande, February 1896 (Ohlin) Collec- 

 tor's No. 1021. 



Type in the Riksmuseum in Stockholm. 



As indicated in the diagnosis, this species is most clo- 

 sely allied to T, patagonica; from this species it is readily 

 told by the much shorter antennae; the different thoracic 

 and wing-pattern, and the different details of structure of 

 the male hypopygium especially the longer horns of the ninth 

 tergite, the longer arm of the ninth pleurite and the diffe- 

 rent appearance of the blade on the eighth sternite. 



Tipula nordenslcjöldi, sp. n. 



Belongs to the glaphyroptera group ; close to T. patagonica 

 sp. n.; antennae rather short, the scapal segments dull yel- 

 low, the flagellar segments very obscurely bicolorous; meso- 

 notum påle brown with three darker brown stripes; femora 

 with a broad dark brown ring before the tip; wings påle 

 brownish gray, sparsely variegated with subhyaline; outer 

 half of cell Se almost entirely dark brown; abdominal tergi- 

 tes dull yellow, very indistinctly trivittate wish påle brown; 

 eighth sternite of the male hypopygium with a trifid appen- 

 dage whose broad median lobe exceeds the subacute lateral 

 lobes. 



Male. — Length 17,5 mm.; wing, 18 mm. 



Frontal prolongation of the head light reddish brown; 

 palpi dark brown. Antennae rather short, the scapal seg- 

 ments dull yellow; flagellar segments brown, the basal en- 



