44 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Habitat. — California. 



Holotype, S (No. 726), Atascadero, San Luis Obispo Co., 

 April 26, 1919 (E. P. Van Duzee). Allotopotype, 9 (No. 

 727), same data. 



Paratopotypes, 1 5,1$; paratypes, 2 5 's, 2 9 's, Bradley, 

 April 27, 1919 (E. P. Van Duzee). 



This interesting little species would seem to be allied to 

 Tipula heatula Osten Sacken. Its closest relative is T. bituber- 

 culata Doane, in which species the abdomen of the female is of 

 normal length. 



9. Tipula evidens, new species 



General coloration shiny obscure yellow, the prsescutal stripes 

 scarcely apparent; antennal flagellum dark brownish black; 

 wings grayish subhyaline, the costal region more yellowish; 

 abdomen yellow, tergites two to five with conspicuous rounded 

 black spots along the lateral margins, basal sternite with a con- 

 spicuous rounded black median spot; male hypopygium large, 

 the ninth tergite very extensive with two obtuse submedian 

 and two longer sublateral lobes ; eighth sternite with two 

 brushes of rather short yellow hairs. 



Male. — Length about 14 mm.; wing, 15.5 mm. 



Frontal prolongation of the head rather long, light brown, slightly darker 

 at the base ; palpi dark brown. Antennae moderately elongated, if bent 

 backward, extending about to the wing-root; scape and basal half of the 

 first flagellar segment obscure yellow the remainder of the flagellum dark 

 brownish black. Head dull brownish yellow, the center of the vertex more 

 brownish gray pruinose. 



Mesonotal praescutum shiny yellow with three indistinct reddish stripes, 

 the surface covered with a sparse pollen ; remainder of the mesonotum 

 obscure yellow. Pleura yellow. Halteres yellow, the knobs dark brown. 

 Legs with the coxae obscure yellow ; trochanters yellow ; femora brownish 

 yellow, the tips narrowly dark brown ; tibiae light brown ; tarsi darker 

 brown. Wings grayish subhyaline ; cells C and Sc more yellowish ; stigma 

 light brown ; an obliterative area extending from before the stigma across 

 the inner end of cell 1st AU; veins brown. Venation: petiole of cell Mi 

 a little longer than m. 



Abdomen yellow ; tergites two to five with a conspicuous black rounded 

 spot on the lateral margins, on the second segment near mid-length, on 

 the other segments close to the base of the segment ; sternites yellow, a 

 conspicuous, rounded black spot on the first segment and less distinct 

 marks near the posterior margins of segments two and three. Male 

 hypopygium large. Ninth tergite very long and extensive, the caudal mar- 

 gin with a deep median notch, the adjacent submedian lobes broadly 

 rounded and with the inner margin set with small setigerous tubercles ; 

 the sublateral margins of the tergites are produced caudad into much 

 longer lobes, with the apices subtruncate, the notch between these and the 



