410 THE CANADIAN ENTOMOLUGIST 



scheme, as suggested by Leng, is a decided mistake. The tarsal claw of 

 fasciatus is wrongly outlined on the plate by Mr. Leng, the basal tooth 

 being large and subparallel as in juarginipennis, though less elevated. 



The tarsal claws in defledeiis, latiusculus and marginipennis^ very 

 thick at base, with the apical part very slender and abruptjy bent down- 

 ward, are, however, noticeably differeiTt from the form assumed in the 

 cethiops, septejitrionis and desertoruvi group. Perhaps it may be this 

 quite perceptible difference in the shape of the claw that constitutes the 

 true difference between Exochomiis and B^'umus, and not the mere 

 presence or absence of a basal tooth ; if this be the case the Brumus of 

 Leng might possibly be considered a valid subgenus, although there are 

 probably intermediates, and I would prefer to consider our species at 

 least as constituting a single genus. The European Brumus, Muls., may, 

 however, be different.* 



Septentrionis, Weise, is the northern and eastern species, of unusually 

 large size, called Davisi by Mr. Leng, and it is not at all the H'dgei of 

 Gorham, the latter being a far southern and essentially Sonoran form, very 

 distinct in appearance and constant in ornamentation. Desertorum and 

 ovoideus seem to have given rise to much unnecessary confusion on the 

 part of Mr. Leng, for he puts one in the section with dentate claws and 

 the other in his Brumus^ Weise. They both belong to the latter section, 

 and are mutually allied, though I am no'A^ convinced distinct species or 

 subspecies. Desertorum is of very broadly oval outline, and generally has 

 a long anterior wisp like prolongation from the posterior spot, while 

 ovoideus is very narrowly and more evenly elliptic, with the humeri 

 scarcely at all exposed at base and has the posterior spot circular and 

 clearly limited throughout its circumference, without suggestion of 

 prolongation. Neither of these forms has anything whatever to do with 

 Cali/or?iicus, either in general appearance or other token of consan- 

 guinity. 



The following species or subspecies may be made known at this 

 opportunity : 



E. deflectens, n. subsp. — Broadly oval, strongly convex, alutaceous 

 and black, the anterior angles of the pronotum nubilously pale; elytra pale 



*The g-enus Brumus, Muls., as represented by its type, 8-signata, which I 

 have examined since the above was written, differs rather radically from this 

 A.mer\cB.n Bruvtus, " Weise " (Leng), in having- an entire basal margin of the 

 pronotum, very large post-coxal arcs, much longer tarsal claws, and in its entire 

 scheme of ornamentation. If, therefore, our species form a genus or subgenus 

 distinct from Exochomiis^ it is still unnamed. 



