96 Psyche [October 



crossvein transverse, curved, twice as long as the last section of the 

 fifth vein. 



One specimen. Austin, Tex., April 20, 1900. 



Psila washingtona sp. no v. 



Female. Length, 4 mm. Head, thorax and abdomen entirely 

 shining jet black, the fine pubescence pale. Face one-third longer 

 than the front; cephalic bristles black, two minute f ronto-orbitals ; 

 antennae black, the third joint bluntly triangular, one-half longer 

 than wide, the arista black, thick at the base then subulate, its 

 pubescence very short; mouthparts black. Thoracic bristles 

 black, two dorsocentrals, pleural hairs not abundant. Legs 

 mostly blackish, coxse jet black, the knees, front tibise, tips of 

 posterior tibise and the tarsi brown. Halteres yellow. Wings 

 with uniform yellow tinge, veins yellow, sections of fourth vein 

 proportioned 1:1:2: 0.8, the last section arched, posterior cross- 

 vein nearly transversely located, more than twice as long as the 

 last section of fifth vein. 



One specimen. Mount Constitution, Orcas Island, Wash., 

 July 17, 1909. 



The species comes nearest the European P. nigra Fallen, which 

 usually has from two to four dorsocentrals, one to three f ronto- 

 orbitals and the last section of the fifth vein more than half the 

 length of the posterior crossvein; its arista is not thickened basally. 

 P. morio Zetterstedt is also similar, but has two distinct fronto- 

 orbitals, four dorsocentrals, black tarsi and the anterior crossvein 

 more basally located. P. atra Meigen has a more pubescent 

 arista, two fronto-orbitals and four dorsocentrals well developed. 



Psila atrata sp. no v. 



Length, 3 mm. Head, thorax and abdomen entirely shining 

 black, the fine pubescence yellow. Head conical, the face very 

 greatly receding and nearly half longer than the front; cephalic 

 bristles black, one minute fronto-orbital; antennae blackish, the 

 third joint elliptical, the arista blackish, not greatly thickened at 

 base, its brown pubescence short but obvious; mouthparts black. 

 Thoracic bristles black, two dorsocentrals, pleural hairs sparse. 

 Coxae black, femora blackish, knees narrowly brown, anterior 

 tibiae and all tarsi brown, hind tibiae broadly blackish along the 



