228 THE CANADIAN ENTOMOLOGIST 



proximad into very broad-based triangular lobes that are directed proximad. 

 the proximal margin sparsely provided with bristles, the tip narrowed. 



Habitat. — California. 



Holotype.-^&, Santa Cruz Island, May 16, 1919, (E. P. Van Duzee^. 

 Type in the collection of the California Academy of Sciences 



Tipula pseudotruncorum, sp. n. 



General coloration light gray; antennae short, dark brown; head with a 

 linear brown mark; mesonotal praescutum with fiv^e more or less distinct brown 

 lines; a capillary brown median line extending from the suture to the base of 

 the abdomen; wings pale brown, variegated with dark brown and subhyaline 

 blotches; abdomen buffy brown, the tergum with three conspicuous dark brown 

 longitudinal stripes. 



Male. — Length 15 mm.; wing 16 mm. 



Female.- — Length 20 mm.; wing 17.5 mm. 



Frontal prolongation of the head long and slender, light gray; palpi dark 

 brown. Antennae short, the first segment elongate, dusted with gray; second 

 scapal segment brownish; ffagellum black, the segments short with the basal 

 swelling indistinct. Head light gray with a conspicuous elongate brown mark. 



Mesonotal praescutum light gray, conspicuously marked with dark brown; 

 median stripe light gray, split by a capillary brown line, the lateral margins of 

 the stripe more broadly dark brown; all three of these lines are confluent before 

 the suture; lateral praescutal stripes dark, the area between them and the 

 median stripe infuscated; scutum light gray with two isolated grayish brown 

 marks on each lobe; remainder of the mesonotum light gray, a capillary brown 

 line extending from the suture to the base of the abdomen. Pleura light gray. 

 Halteres brownish yellow, the knobs dark brown. Legs with the coxae light 

 gray; trochanters grayish brown; femora black, more reddish basally; remainder 

 of the legs black. Wings brown; stigma dark brown; a small, dark brown spot 

 at the origin of Rs; membrane conspicuously variegated with subhyaline areas, 

 the more conspicuous situated before and beyond the stigma, immediately 

 before the origin of Rs; a conspicuous white blotch at the base of cell M and 

 another at about two-thirds the length of the cell; indistinct whitish areas in 

 cells Cu and 1st A. Venation: Rs long; cell 1st Mi long and narrow; petiole of 

 cell M\ shorter than m. 



Abdomen with the first tergite light gray; remaining tergites buffy brown, 

 with three broad dark brown stripes that are narrowly interrupted at the base 

 and apex of each segment; lateral margins of the tergites broadly light gray; 

 sternites dusted with gray. Male hypopygium rather large. Ninth tergite 

 with a broad, U-shaped notch, the lateral lobes indistinct, obtusely rounded; 

 deep median incision that extends back to beyond mid-length of the tergite, 

 the margins being practically contiguous. Ninth pleurite complete; outer 

 pleural appendage tumid, gradually narrowed to the apex. Ninth sternite 

 with a deep \^-shaped notch, the lateral angles produced proximad into fleshy 

 lobes that are contiguous on the median line, at the tip with conspicuous long 

 yellow hairs that largely fill the notch of the sternite. Eighth sternite with 

 the lateral angles produced into slight tumid lobes, each tipped with a pencil 

 of long, reddish bristles, decussate across the median line. 



