line each side of the middle; scutel yellow; 

 two small yellow spots before the scutel, under 

 the thorax : elytra with yellow bands ; the first 

 band forms a regular arch, of which the scutel 

 represents the key-stone ; the second band is in 

 the form of the letter W, each V receiving a 

 termination of the first band; the third band 

 is nearly transverse, placed upon the middle; 

 fourth band arcuated each side from the suture 

 obliquely backward, parallel and near to a large 

 terminal spot or band, which on each elytrum 

 is ovate, with a central black spot ; tip with a 

 short obtuse tooth ; humerus with three small 

 spots: posfpectus spotted with yellow: thighs 

 with a brown line on the inner side: venter 

 yellow. 



OBSERVATIONS. 



During a short repose of Major Long's party 

 on the bank of the Wisconsan river, preparatory 

 to crossing that stream, this unusually fine in- 

 sect attracted the eye of that officer, as it rested 

 on the bark of a hickory tree. Another specimen 

 belongs to the Philadelphia Museum, probably 

 taken in Pennsylvania. As these two are the 



PLATE 53. R 



