82 DIPTERA OF NORTH AMERICA. 



gray with two rows of rather large blackish spots. Its hairs are 

 whitish yellow ; some black bristles on the posterior border of 

 the prolonged last segment. Tip of the first joint and the second 

 joint of the coxas rather dark yellow. Femora brownish-black, 

 with dark yellow tips. Tibiaa and tarsi dark yellow. Wings pro- 

 portionately rather long and narrow. Their reticulation is black, 

 rather diffuse and coarse ; the base of the wing as far as the base 

 of the discal cell has no reticulation. The black stigma includes 

 no clear dot. Moreover, the reticulation of the wings is somewhat 

 variable. Transverse veins rather near each other. 



Hab. Cuba. (Poey.) 



Observation. I have a female likewise captured in Cuba, which, 

 I think, belongs to the present species. It resembles the male in 

 everything but the femora, which are darkened to a much smaller 

 extent, .and not with black, but brown. The borer is black, flat, 

 about as long as the two last segments of the abdomen taken 

 together. 



16. T. solidaginis FITCH. and 9. (Tab. II, fig. 16.) Rufo 

 ferruginea, capite pedibusque flavioribus, fronte latissima, setis scutelli 

 valde convexi duabus, alis fusco-reticulatis, incisuris una anteriore, 

 duabus posterioribus apiceque hyalinis, parcissime fusco-maculatis. 



Brownish-ferruginous with the head and legs more yellow ; front very 

 broad ; scutellum very convex with two bristles. Wings reticulated 

 with fuscous having one limpid space at the costa and two at the 

 posterior border scarcely dotted with fuscous. Long. corp. 0.26. Long, 

 al. 0.26. 



SYN. Acinia solidaginis FITCH. First Rep. 66. 



This remarkable species, which, according to Mr. Fitch, produces 

 round galls on the stems of Soliclago, has no near relations among the 

 European Trypetce. In consequence of the extraordinary breadth 

 of its front, the breadth and convexity of its thorax, and the in- 

 flation of its large scutellum, it has the appearance of a large 

 Lipara. It is brownish ferruginous. Head more yellow, face 

 almost whitish. The bristles of the unusually broad front are 

 black, smaller and weaker than in most other species, so that one 

 might easily be tempted to refer the species to the Ortalidce, if the 

 structure of the auxiliary vein did not prove that it belongs here. 

 Face deepened in the middle, prominent again underneath. An- 

 tennae yellow, short and broad, the third joint having a rather dis- 



