24 ARKIV FÖR ZOOLOGI. BAND 13. NIO 6. 



Three larger females (Punta Arenas, November 27 — 30, 

 1895, O. XoRDEXSKJÖLD, Collectors's No. 189) closely resemble 

 the types of T. magellanicola but are considerably larger 

 (Length about 23 mm.; wing, 18,5 mm.) and with the ab- 

 domen more yellowish. With more material these may be 

 found to represent a distinct species but at present they 

 must be considered as being Tipula magellanicola and have 

 been so labelled. 



The glaphyroptera group. 



This Chilian and Patagonian group of the genus repre- 

 sents a condition that is very comparable with that found 

 in the Neotropical monilifera group (see Transactions American 

 Entomological Society, vol. 42, pp. 23—30; 1916). The hy- 

 popvgium of the species in which the males are known {T. 

 fuegiensis, T. patagonica, T. nordenshjöldi, T. duséni and T. 

 glaphyroptera; the lat ter species added from a Chilian speci- 

 men in the writer's collection that agrees very well with 

 Philippi's brief description) bears on the eighth sternite a 

 long, påle foliaceous appendage that is profoundl}^ incised into 

 three lobes; in the speciallized species [T. duséni, T. glaphy- 

 roptera), the median lobe of these three is vestigial, the two 

 laterals being very broad (see plate 1, fig. 9). This condi- 

 tion is quite similar to that occuring in the monilifera group 

 except that in this case the median lobe persists in the spe- 

 ciallized forms while the laterals atrophy. The structure of 

 the hypopygium proper in the glaphyroptera group is very 

 uniform throughout the group (see plate 1, fig. 1). The 

 ninth tergite is large and flattened, the sides narrowed to 

 the apex which terminates in two compressed blades that 

 are parallel or slightly divergent (see plate 1, figs. 2 to 4). 

 The ninth pleurite is complete; near its ventral-proximal 

 angle with a cj^lindrical arm that is provided with long, 

 coarse setae at its tip; the outer pleural appendage is cylin- 

 drical or slightly expanded distally, provided with coarse 

 hairs; the inner pleural appendage is a compressed blade 

 that terminates in a long chitinized beak which juts into the 

 notch of the tergite. The ninth sternite is profoundl}^ in- 

 cised medially, the incision filled with amembraneous tissue; 



