340 KEPORT OF THE SECRETARY OF THM 



advantage that the jarring need only be carried on for about 

 ten weeks of the year, namely, from about the first of June to 

 the middle of August in this latitude. Moreover, in accord- 

 ance with its late appearance we find that, according to Dr. 

 Trimble, whenever it attacks pears, it prefers the late-ripening 

 varieties. Again, it is, like the Plum Curculio, nocturnal in 

 its habits, and secretive during the day ; so that the Ransom 

 process will undoubtedly prove efiectual with it if used at 

 the right season. All fruit that falls should be destroyed, 

 and as we know that the larva hibernates in the ground, 

 many of them will be injured and destroyed by late stirring 

 of the soil. 



CoKOTRACHELUB CRAT^Gi, Walsli — Larva — Average length when 

 fall grown, 0.32 inch; 4| times as long as wide, and straight. Opaque 

 whitish, with a narrow dusky dorsal line, generally obsolete on thorax, 

 and a few very short hairs. Distinct lateral tubercles on all the joints. 

 Head rufous with mandibles black, except at base, and distinctly two- 

 toothed at tip. 



Pupa — Average length 0.28 inch. Snout reaching a little beyond 

 elbow of middle tibiae and tarsi, with two stout rufous thorns near the 

 origin of antennce, two more at base, and sometimes others more toward 

 the tip. Head and thorax also armed with such thorns, and also two to 

 each elbow of the femora and tibia?. Wing cases with rows of short 

 rufous bristles along the elevations between the striae. Abdomen cylin- 

 drical, the basal joint with a central scutellar bristleless tubercle and 

 two others, one each side of it, each bearing a bristle ; the other joints 

 conically tubercled laterally, each tubercle bearing a stout bristle, and 

 each joint bearing dorsally about four other bristles on its posterior sub- 

 margin. Terminal sub-segment squarely cut oflF and bearing two stout 

 inwardly-curved brown thorns. 



