47 



and the legs are long and slender, especially the hinder pair, which are almost twice as 

 long as the body. This beetle is exceedingly quick in its movements, and difficult to 

 capture, as it runs swiftly, and takes to flight instantly if disturbed. 



No. 20. Euderces picipes (Fab.). This pretty little ant- like beetle has been found by 

 me on hickory in July, and also on the flowers of sumachs growing among these trees. 

 Having found it only in this one locality, it seems very probable that it bores in this 

 tree, although (as in the case of several other species in this list) there is no direct evi- 

 dence of the fact. The beetle is only one-fourth to one-third of an inch in length, and has 

 the thorax constricted behind, so as to give it much resemblance to an ant, which it 

 further resembles in its movements upon the flowers on which it delights to spend the 

 sunny days. It is of a glossy black colour ; the thorax is very finely wrinkled longitudi- 

 nally, and the elytra are coarsely punctured, and have an ivory-like raised line running 

 obliquely across each near the middle. 



No. 21. Tyiiocerus velutirms Oliv. is a very common longicorn which appears upon 

 flowering plants and shrubs, such as spiraea and viburnum, in July and August, but I have 

 not been able to find any record of the trees attacked by it. Having taken it on hickory 

 and found it numerous in the neighbourhood of these trees, I place it in the present list 

 with the conviction that future investigations will sustain me in so doing. The thorax, 

 head and antennae are black ; the thorax being margined and sparsely clad with golden 

 hairs, and increasing in size from the head to the base of the wing-covers. The abdomen, 

 legs and elytra are of a rusty-red, the latter having four golden ban^s. Length averages 

 about six-tenths of an inch. 



No. 22. Leptura proxima Say occurs with the preceding species and is also common. 

 It is about the same size, but has the thorax constricted behind and is entirely black, 

 with the exception of the elytra, which are ochre yellow with black tips. As an ex- 

 ample of the scanty knowledge regarding the habits of longicorns, I may say that out of 

 some seventy-five species belonging to this genus in the United States and Canada, only 

 one is mentioned among the " Insects Injurious to Forest and Shade Trees." 



No. 23. Dorcheschema nigrum (Say) is of a velvety black colour and from four-tenths 

 to five- tenths of an inch in length. The thorax is cylindrical ; not constricted at the 

 head, and but slightly behind. The wing-covers widen slightly toward the tips, which 

 are rounded, and they are coarsely punctured. The lower surface of the body and the 

 legs are clothed with short white hairs. The antennae are very long and slender. I 

 have found the beetles issuing from dead trees in June, and they are abundant during 

 that and the following month, both on dead and felled wood, and on the trunks and foli- 

 age of living trees. 



No. 24. Goes tigrinus (DeG.) is, according to Fitch, probably the most destructive of 

 all the beetles boring in hickory ; attacking not only dead wood but infesting trees ap- 

 parently sound, and greatly injuring them. The average length is about an inch, some 

 of the males being less and some of the females more. The general colour is a reddish- 

 brown, but the beetle has a tawny appearance owing to the short hairs which cover all 

 the under surface and much of the upper. The antennae are not quite so long as the 

 body ; the two lower joints are swollen and brown, the remaining ones slender and pale. 

 The thorax has on each side a blunt conical spine. The elytra appear to have a brown 

 band at the base and a similar one behind the middle, due to the absence from these por- 

 tions of the short hairs that clothe the rest of the body. The beetle appears in summer 

 and the female deposits her eggs in holes which she gnaws in the bark. The larva when 

 hatched feeds beneath the bark on the sappy layers of the surface wood, but as it be- 

 comes larger and stronger it sinks gradually deeper and bores a burrow, increasing in 

 size with its own growth, upward toward the centre of the tree. It is a soft, gradually 

 tapering grub of a yellowish colour ; about an inch long and one-fourth of an inch wide 

 across the broadest segment — the second from the head. When it feels that its life in 

 this form is about to end, it turns and bores outward to the bark, through which, after 

 the usual metamorphoses, the beetle makes its exit. 



No. 25. Goes ^ztZc/i^r (Hald.). The "Beautiful Goes " infests the shag-bark and pig-nut 

 hickories. It is a rarer and somewhat larger species than the former, but closely re- 

 sembles it, and its habits in the larval form are probably the same. 



