498 



COLEOPTERA. 



formed by the larvre he found Ma}" 2;jth, several pink-orange 

 pupte, " invariably 13'iug with their heads outwards ; their long 

 antennae folded over the wing-eases obliquely down on the 

 sides, passing beneath the posterior pair 

 of legs, a little beyond them and then 

 curving up over the breast, reach the 

 head." The beetle is related to L. alplut 

 Say, and is gray, with bands and spots of 

 blackish pubescence ; it is .25 of an inch 

 long. Two species of ichneumons were 

 found b}' Shimer to prey upon the beetle. 

 In MoiwJiammus the antennae are of 

 great length. M. titillator Fabr. is brown 

 mottled with gray ; while a slenderer spe- 

 cies, M. sctitellatiis Say, of a peculiar dark 

 olive green, with a whitish scutellum, bores 

 in the white pine. 



The singular habits of the Girdler, Onci- 

 deres cingulatus Say (Fig. 489), have thus 

 been described by Professor Haldeman 

 in the Pennsjdvania Farm Journal, vol. i, 

 p. 34. "This insect was fu'st described 

 by Say in the Journal of the Academy of 

 Natural Sciences, vol. v, p. 272, 1825, and its 

 habits were discovered by us and published in 

 our 'Materials -towards a History of the Col- 

 eoptera longicornia of the United States ;' Am. 

 Phil. Trans., vol. s. p. 52, 1837. 



"In our walks through the forest our atten- 

 tion was frequently drawn to the branches and 

 main shoots of 3"0ung hickory trees (Carya 

 alba) , which were girdled with a deep notch in 

 such a manner as to induce an observer to be- 

 lieve that the object in view was to kill the 

 branch bej^oncl the notch, and extraordinary as 

 it may appear, this is actually the fact, and the rig. 489. 

 operator is an insect whose instinct was implanted hy the 

 Almighty power who created it, and under such circumstances 

 that it could never have been acquired as a habit. The etfect 



488. 



