226 BRITISH GUIANA TIPULIDAE 



(see pi. Ill, f. l) Sc long extending far beyond the origin of the radial sector, 

 Sc2 near its tip; Rs long, more than twice as long as the deflection of Ri+i,; 

 basal deflection of Cui at or before the fork of M. 



Abdominal tergites dark brown, the ninth segment somewhat paler; 

 sternites brown. 



Habitat.— Bartica, December 24, 1912 to April 14, 1913. 



Holotype, cf, Bartica, February 21, 1913. 



Allotype, 9 , topotypie, December 24, 1912. 



Paratypes, 4cf , 7 9, topotypie, December 31, 1912, to April 14, 

 1913. 



Easily separated from the other known species of the genus that 

 have the long subcosta by its lack of distinct spottings on the wings, 

 the stigmal blotch and a more or less distinct infuscation at the 

 apex being the only marks on the wing-surface. 



Dicranomyia parish! sp. n. 



Sc short, S 2 retracted far from the tip of Sri, Rx long; wings hyaline or 

 nearly so; halteres rather short. 



Male, — length, 5 mm. ; wing, 6.2 mm. 



Female, — length, 5-6.2 mm.; wing, 5.3-6.4 mm. 



Rostrum, palpi and head light brown, the latter with an indistinct grayish 

 bloom when seen in certain lights. 



Mesonotal praescutum with a light golden bloom, the lateral margins 

 narrowly brown, the sclerite with three dark brown stripes of which the 

 median one is broadest, the short lateral stripes beginning back of the pseu- 

 dosutural foveae and continuing on to the scutum where they suffuse the 

 lobes; scutellum and postnotum light brown. Pleura pale, whitish, the 

 mesosternum strongly suffused with brown. Halteres quite short, brown, 

 the knob darker. Legs, coxae and trochanters brownish yellow; femora 

 brown, paler at the extreme base; tibiae and tarsi brown. Wings hyaline, 

 veins brown, stigma indistinct. Venation: Si ending opposite the origin 

 of i2s, Sc2 retracted far back from its tip as in the halterata group; Rs long, 

 nearly twice as long as the deflection of Ri+t,. 



Abdominal tergites dark brown, the sternites paler. 



Habitat. — Bartica, January 11, 1913 to February 27, 1913. 

 Mallali, March 6, 1913 to March 31, 1913. 



Holotype, d', Mallali, March 15, 1913. 



Allotype, 9 , topotypie, March 6, 1913. 



Paratypes, 39, Bartica, January 11, February 27. One 9 , 

 topotypie, March 31, 1913. 



The only described regional species that can be confused with 

 this form is D. simiUima Alex. (Can. Ent., December 1912, 361, 



