102 



271. The Hairy Clerid. 



Chariessa pilosa Forst. 



The larvfifi prey upon and do much toward preventing the increase of several of the 

 destructive flat-headed Iwrers [Bupi^estiche) in deciduous trees. 

 Exhibit: Adults. 



THE CLICK BEETLES. FAMILY ELATERIDiE. 



272. The Eyed Elater. 

 Alans ocvlahis Linn. 



As a larva preys upon numerous species of bark and wood boring insects in 

 deciduous trees. 

 Exhibit: Adults. 



273. The Small-Eyed Elater. 



Alans my ops Fab. 



As a, larva preys upon the larger species of borers in coniferous trees. 

 Exhibit: Adults, larva. 



274. The Four-Wing-ed Parasites. 

 Order Hymenoptera. Families Iclmeuinonidie, Bracunidie, Chulcididie, etc. 



Exhibit: Two larval galleries of the rigid cypress horer{ QiJme rigida), in one of 

 which the insect attained full development, while in the other it was attacked and 

 killed 1)y a parasite, Bracon sp. 



Adults and coi'6ons of several species which attack larvfe of butterflies and moths. 



Adults and cocoons of several species which attack larva? of wood-boring insects. 



THE TROGOSITIDS. FAMILY TROGOSITIDiE. 

 275. The Green Trog-ositid. 



Trogosita. rirescms Fab. 



A very important enemy of nearly all the larger and more destructive bark-beetles. 

 The adults conceal themselves in the outer bark, and the larv?e enter the galleries 

 and prey upon the insects therein. 



Exhibit: Adults. 



THE COLYDIIDS. FAMILY COLYDIIDiE. 



276. The Tuberculate Colydiid. 



Aulonium tuberculatum Lee. 



The adults enter the galleries and with the larva? feed upon various species of bark- 

 beetles in all their stages. 

 Exhibit: Adults. 



277. The Line-Marked Colydiid. 



Colydium lineola Say. 



The adults enter the galleries and their larvse feed upon the developing lirood of 

 various species of Ambrosia beetles. 

 Exhibit: Adults. 



