254 QUARTERLY JOURNAL. 



and then beetles, and finally they are ready to leave the tree in 

 September. 



The principal means for destroying this insect, seem to be that 

 of gathering it in September, when they congregate upon the lo- 

 cust tree, to pair. Mr. Harris expresses the opinion, that an hour 

 devoted to this business for a few days, would be sufficient to rid 

 us of it ; and if followed up for a few years, would be the means 

 of saving this excellent tree from ruin. Heading down the tree, 

 in some instances, may be necessary. 



C. caprea, fig. 5. P. III. Fuscous ; thorax, with the anterior 

 edge, yellow ; elytra with four bands and tip, yellow. (Say). 



Observations. The elytra at base are marked O. O. The two 

 remaining bands arched upwards, and all at equal distances from 

 each other ; two yellow dots at their tips. 



Say remarks, that the bands are sometimes white. The larva, 

 like the preceding species, are supposed to live in wood. 



Desmocerus, P. III. fig. 6. Cerambyx of Forster : Stenocorus 

 of Fab. Eyes lunated, surrounding the base of the antennae ; 

 bead sloped before ; palpi terminated by a large joint, in the form 

 of a reversed, elongated, compressed cone ; labrum very apparent j 

 maxillary larger than the labial palpi ; thorax almost square, or 

 cylindrical — generally spinous or tubercular on the sides ; antennae 

 long and setaceous. (Stark.) 



D. palliatus. — Color, deep violet, or Prussian blue ; nearly one 

 half of the wing covers orange-yellow ; antennai have a knotted 

 appearance. 



Ohservaiions . The larva live in the lower part of the stem of 

 the elder, and devour the pith. This insect is rather useful than 

 injurious, by destroying this troublesome shrub. 



Fig. 2. PI. ITT. Purpuricenus : Dejean. "We are unable to give 

 a satisfactory account of this insect ; it will therefore be noticed 

 in some subsequent number. 



Note. — The valuable plates accompanying this number of the 

 Journal, were engraved by our friend J. E. Gavit, Bank Note En- 

 graver of this city, which — considering that it is the first attempt 

 in this line of business — does him much credit as an artist. 



