154 



THE MONTHLY BULLETIN. 



has three bristles on one side and only two on the other, so that I can not say 

 whether the normal number of bristles of the scutellum is six or four. The bristles 

 of the thorax and of the scutellum, as well as the short pile of the thoracic dorsum, 

 are black ; metathorax distinctly infuscated on its superior margin and its middle 

 line. 



The abdomen is shining, with short black pile ; the third and fourth segments 

 have, each at its basis, a chestnut crossband, interrupted upon its middle, while upon 

 the second segment only a lateral beginning of such a stripe is indicated by a chestnut 

 brown spot. The very broad ovipositor is flat, almost as long as the three last 

 abdominal segments taken together, very broadly truncate and infuscated at the end. 

 The front femora are sparsely beset with bristles on the upper and under side ; the 

 middle femora are entirely without bristles ; upon the hind femora, likewise, there are 

 only a few bristlelike hairs before the end of the upper side ; the upper side of the hind 

 tibia is merely beset with exceedingly short bristlelike hairs. Wings are of the usual 

 shape, hyaline, with a pale brown picture ; it consists : 1, in an oblique half ci'oss- 

 band running from the humeral cross-vein to the basis of the second basal cell ; 



Fig. 54. — Showing the work of the yellow currant 

 and gooseberry fruit fly, Epochra canadensis. (Orig- 

 inal.) 



2, of a crossband parallel to the first, abbreviated behind, which begins at the 

 stigma, near the anterior margin, and runs across the basis of the submarginal cell, 

 as well as across the cross-veins, which close the second and third basal cells, and 

 thus reaches the sixth longitudinal vein ; 3, of a rivulet which begins above the 

 posterior cross-vein, near the third longitudinal vein, runs from it across the 

 posterior cross-vein as far as the posterior margin, and is continued along this 

 margin inside of the third posterior cell, but, before reaching the sixth longitudinal 

 vein, is suddenly turned upwards, running parallel to the band which begins at the 

 stigma, crossing the small cross-vein, and thus reaching the anterior margin, where, 

 gradually expanding, it forms a border ending a little beyond the tip of the fourth 

 cross-vein. 



The tAvo crossbands, as well as the rivulet, are of moderate breadth only ; the latter 

 has, in the described specimen, the following faded spots, which in more fully colored 

 specimens are probably less apparent or altogether absent : 1, a rounded spot in the 

 marginal cell, above the origin of the rivulet ; 2, upon the longitudinal axis of the 

 submarginal cell an indentation in the inner margin of the section bordering the apex 

 of the wing ; 3, upon the longitudinal axis of the first posterior cell an interruption 

 of the rivulet at its origin and an indentation in the inner margin of the portion 

 bordering the apex of the wing ; 4, upon the longitudinal axis of the discal cell a 

 narrow interruption of the section, running again toward the anterior margin ; 

 5, the spot upon the posterior margin connects the first, descending portion, with the 

 second, which rises again upward. The first and third longitudinal veins are bristly ; 



