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- 

 inum mcestum Halde- 

 man (Fig. 483 ; , a, 

 larva; 6, pupa), we 

 have found in all its 

 stages under the bark 

 of oaks, early in May. 

 The larva is footless, 

 white ; the head is 

 rather large, white, 

 with strong black jaws 



convex on the outer side ; the body is uniform, gradually 

 diminishing in width posteriorly ; it is .GO 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 

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

 in the grape-vine. The genus CaUidium has antennae pi g . 434 

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

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



horny head, small stout man- 

 dibles, and six small legs, and 

 the} 7 are said to live in this 

 state two years. Callidium 

 antennatum Newman is en- 

 tirely blue ; it bores in pine 

 wood and in red cedar, min- 

 ing under the bark. C. semi- 

 circular is Bland (Fig. 484) is 

 reddish brown, with a white 

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

 black spot. It was discovered in Pennsylvania. 



Cbjtus has a more cylindrical body, and spherical prothorax, 

 besides being beautifully banded with golden, on a dark 

 ground. Clytus spedosus Say injures the maple. We have 

 taken the beetle on the summit of Mount Katahdin in Maine. 

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



FI;T. 483. 



