296 NORTH AMERICAN TRYPETINA. 



flaps of the proboscis, and placing them in the genus Ensina, 

 then the difference between Oxyna and Tephritis is rendered so 

 very subtle, as to become unavailable for my essay of a classifi- 

 cation of North American Trypetina, based as it is upon very 

 insufficient materials. The question arises, therefore, whether it 

 would not be better, temporarily, to bring together all the species 

 to be described below (with the exception of the Urellise) under 

 the head of the genus Tephritis, or else to distribute those species 

 in genera on some other principle. The latter course seems to 

 me preferable, in rendering the determination of the species 

 easier. I would propose to call Tephritis those species, the 

 picture of the wings of which does not form at the apex distinctly 

 developed rays, and those which have such rays would form a 

 new genus Euaresta. Most species will then gain a position in 

 conformity to their true relationship, as well as to their habitual 

 affinities ; and although it cannot be denied that the location of 

 some species will thus be rendered somewhat artificial, this dis- 

 advantage cannot well be avoided as long as the knowledge of 

 the American fauna is not more complete than it actually is. 



That Trypeta angustipennis belongs to the genus Tephritis 

 results from the foregoing explanation. 



44. T. (ina lis Loew. % $. (Tab. XI, f. 4.) — Cinerea, capite pedi- 

 busque lnteis, proboscide non geniculate, alis nigro-reticulatis, fascia 

 obliqua, hide a stigmate trans venas transversales ad posticura al?e mar- 

 ginera dueta, maculisque duabus altera subapicali, costse contigua et 

 altera apicali non retieulatis, stigmatis nigri basi dilutissinie subflaves- 

 cente, vena longitudinali tertia nuda. 



Cinereous; bead and feet clay-yellow; proboscis not geniculated; reticu- 

 lation of tbe wings black ; a crossband running from the stigma over 

 the crossveins, a spot near tbe anterior margin before tbe apex, and 

 another one on the apex, are not reticulate; the basis of the black 

 stigma is of a very faint yellow; the third longitudinal vein is not 

 bristly. Long. corp. %, 0.16; cum terebra 0.24; long. al. 0.20—0.21. 



Syn. Trypeta jinalis Loew, Dipt. Am. Cent. II, 78. 



Cinereous, thorax and abdomen without any picture. Head, 

 antennae, and palpi rather dark yellow, the larger part of the 

 occiput dark brown. The front is of a very moderate breadth ; 

 its usual bristles are black. The antennae do not reach to the 

 anterior edge of the mouth; their second joint does not bear a 

 longer bristlet ; the anterior corner of the third joint is rounded; 



