99 



247. The Oak Carpenter Worm. 



I'rioiw.iystus rohlnift: Peck. 



The larvfe mine in living oak and locust, and are sometimes very destructive, espe 

 cially to aged trees. 



Exhibit: Adults, work. 



248. The Poplar Carpenter Worm. 



Cosfus cnitt'rrn.'iis Lint. 



The larvfe mine in trunks of cottonwood. 

 Exhibit: Adults. 



THE HORNTAILS OR WOOD WASPS. FAMILY UROCERIDiE. 



Cf^SE 43. 

 249. The Pigeon Tremex. 



Tri'inex colutnha Linn. 



Larvfe mine the sapwood of hickory, oak, poplar, maple, and other deciduous 

 forest trees, hastening the death of those weakened hy other causes. 

 Exhibit: Adults, work. 



250. The Pale Tremex. 



Tiriiit'x ."criceus Say. 



Habits like the pigeon tremex. 

 Exhibit: Adults. 



251. The White-Horned HorntaiL 

 Urocerus albicornis Fab. 



Attacks spruce, hemlock, and fir. 

 Exhibit: Adults, larva, pupa, work. 



252. The Blue Horntail. 



Paurnrus ciianeux Fab. 

 Attacks spruce and fir. 

 Exhibit: Adult. • 



253. The Banded Horntail. 

 Urocerus abdominalis Harr. 

 Attacks spruce. 

 Exhibit: Adults. 



254. The Yellow- Winged Horntail. 



Urocerus Jiai I pennis Kirby. 



255. The Small- Pine Horntail. 



Pdururus plnlcola Ashm. 



256. The Black-Pine Horntail. 



Pauriirus Iio]>k-i)tsi Ashm. 



Attacks spruce. 

 Exhibit: Adults. 



Larvfe in pine. 

 Exhibit: Adults. 



Larvfe in pine. 

 Exhibit: Adults. 



