76 DIPTERA OP NORTH AMERICA. 



1O. T. Ciligulata LOEW. $>. (Tab. II, fig. 11.) Nigra, capite 

 pedibusque luteis, thoracis raargine laterali scutelloque flavis, margine 

 segmentorurn abdominaliuin singulorum postico albido, alarum hyali- 

 narum fasciis quatuor punctoque apicali nigris. 



Black with the head and legs luteous, the lateral borders of the thorax 

 and the scutellum yellow, the posterior borders of the abdominal seg- 

 ments whitish ; wings hyaline with four bands and an apical dot black. 

 Long. corp. 0.22. Long. al. 0.20. 



It belongs to the relationship of the European Tryp. cerasi 

 Linn. (= signata Meig.), a group which must not be confounded 

 with that of Tryp. solstitialis Linn., closely alike in its coloring. 

 Black. Head rather dark yellow, front brighter yellow, of middle 

 breadth, with rather long black bristles. Antennae reaching to a 

 little beyond the middle of the face, last joint rather narrow, and 

 with the anterior corner rather sharp. Face straight, descending, 

 with moderately deep furrows for the reception of the antennae ; 

 border of the mouth by no means prominent. Proboscis and palpi 

 short. Thorax black ; the humeral callosity and a longitudinal 

 stripe running from the latter to the base of the wing are bright 

 yellow. The bristles of the thorax and the four bristles of the 

 yellow scutellum black ; the base and greatest part of the lateral 

 border of the latter black. Metanotum and abdomen glossy black, 

 the latter with broad whitish (perhaps more yellow in life) edges 

 of the posterior borders and black hairs. Borer exceedingly 

 short. Legs dark yellow; femora a little brownish at the base; 

 the anterior femora with small brown bristles on the under side; 

 the two posterior tibia? with short black bristles on the upper side. 

 Wings somewhat broad, especially in the neighborhood of the base, 

 with four black bands and a little black spot at the tip. The first 

 band runs from the basal humeral vein to the posterior angle of 

 the anal cell, which is drawn out into a point. The second is 

 broadest, running from the black stigma beyond the fifth longi- 

 tudinal vein, and ending abruptly in the middle between this vein 

 and the border of the wing. The third, which runs over the pos- 

 terior transverse vein, is also rather perpendicular, and completely 

 reaches the posterior border of the wing. The fourth band is 

 perfectly united with the third on the costal border, and reaches 

 the posterior border behind the tip of the fourth longitudinal vein, 

 so that it has a rather oblique position. The small apical spot 



