ART. 10. NEW SPECIES OF THE FAMILY TTPULIDAE ALEXANDER. 13 



Type.— Male, Cat. No. 26091, U.S.N.M. 



The general appearance of this fly is very much like a Pliylidoreay 

 allied to L. (P.) adusta Osten Sacken, but the elongate sector would 

 indicate that such a subgeneric reference would be incorrect. 



LIMNOPHILA OCCroENS, new species. 



Male. — Length 6.8 mm.; wing 8.5 mm. 



Female. — Length about 7 mm.; wing 9 mm. 



Closely related to L. hrevifurca Osten Sacken (Eastern North 

 America), from which it differs as follows: 



Size very notably larger. Thorax reddish brown, only sparsely 

 pruinescent, the reddish color showing through and giving the body 

 a reddish cast. Wings with a strong yellow tinge. 



Described from one male and one female; the former collected at 

 Seattle, Washington, June 19, 1917 (H. G. Dyar); the latter at Gold 

 Lake Camp, Plumas County, California, July 22, 1916 (H. G. Dyar). 



Type.— M&le, Cat. No. 26092, U.S.N.M. 



The general appearance of this fly is very different from L. hrevi- 

 furca but a critical comparison shows that they are unquestionably 

 closely allied though distinct. The structure of the male hypopy- 

 gium is the same in both species. Both species belong to the nemor- 

 alis group of the genus. 



PILARIA MICROCERA, new species. 



Closely related to P. te?}uipes (Say); antennae of the male short; 

 thoracic stripes confluent, dark brown; abdominal tergites and 

 hypopygium brownish black. 



Male. — Length 7.6-8 mm.; wing 10-10.5 mm. 



Veiy similar to P. tenuipes (Say), with the following exceptions: 



Antennae of the male short, if bent backward barely reaching the 

 wing-root. Thoracic stripes very distinct, dark brown, confluent. 

 Wings a little broader than in P. tenuipes but narrower than in 

 discicollis (Meigen); r on R^ immediately beyond the base; basal 

 deflection of Cu.^ at about two-thirds the length of cell 1st M.^, 

 Abdominal tergites and the hypopygium almost black, the basal 

 sternites paler brown with testaceous incisures. 



The general resemblance of this species to P. tenuipes is very 

 marked, in spite of the short antennae. The wings are conspicuously 

 narrower than in the European P. discicollis (Meigen). 



Described from two males (one teneral), collected at Prospect, 

 Oregon, May 23, 1921 (H. G. Dyar). 



Type.— M&le, Cat. No. 26093, U.S.N.M. 



TRICYPHONA RAINIERIA, new species. 



General coloration dark brown, gray pruinose, the mesonotal prae- 

 scutum with four conspicuous black stripes; wings yellowish, the 



