496 



COLEOPTERA. 



trunks of hickory trees, the worm often working its way out of 

 the wood after it has been made into articles of furniture or 



carriages. The Ase- 

 tnum mcEstum Halde- 

 man (Fig. 483 ; a, a, 

 larva; h^ pupa), we 

 have found in all its 

 stages under the bark 

 of oaks, earl}' in May. 

 The larva is footless, 

 white ; the head is 

 rather large, white, 

 with strong black jaws 



Fig. 482. 



convex on the outer side ; the body is uniform, graduall}- 

 diminishing in widtli posteriori}^ ; it is .00 of an inch long. 

 The pupa is .44 of an inch long. The beetle is about half an 

 inch long and is dark brown, with very thick femora. ^ 

 It flies the last of May. I have received a larva of this i 

 species from Dr. Shimer, which was found by him boring S 

 in the grape-vine. The genus CaUidium has antennae rig. 484 

 of moderate length, a broad rounded prothorax, and a flattened 

 body behind. The larvse are unusually flattened, with a broad 



horny head, small stout man- 

 dibles, and six small legs, and 

 they are said to live in this 

 state two years. CaUidium 

 antennatum Newman is en- 

 tirely blue ; it bores in pine 

 wood and in red cedar, min- 

 ing under the bark. C. senii- 

 circidaris Bland (Fig. 484) is 

 reddish brown, with a white 

 iiand on each elytron, enclosing a rather large, semicircular, 

 black spot. It was discovered in Pennsylvania. 



Chjtus has a more cylindrical body, and spherical prothorax, 

 besides being beautifully banded with golden, on a dark 

 ground. Clytus speciosns Say injures the maple. We have 

 taken the beetle on the summit of ]\Iount Katahdin in Maine. 

 The beetle lays its eggs in July and August, and the larvae 



Fit;. 483. 



