429 



"The larva, when first examined, August 22, was .3 of an inch long; color 

 light jellow, head and shield darker, tlie oblique anal plate almost black, bear- 

 inps hairs and hooks; dorsal and subdorsal lines pinkish. By the middle of 

 September it abandons the branches, being then .45 of an inch in length, and 

 bores into the stalk a few inches above the ground ; it makes its way down 

 the pith into the roots, well under the ground, where it passes the winter. I 

 fetched several examples from the fields in January for examination ; they 

 were then .58 to .6 of an inch in length, lighter in color, with the longitudinal 

 lines of pink brighter than in autumn, the eighth segment conspicuously marked 

 on the back by pink. There are few hairs over their smooth bodies; on the 

 last ring, however, there is a brown or black chitinous disc, with a circle of 

 long black hairs about its circumference ; in the centre of this disc there is a small 

 papilla, with two stout, straight black teeth, pointing rearwards ; these teeth 

 arc hooked upward in the autumn stage. The hairs render the plate sensitive 

 to touch, and help to brush fragments from their long, narrow galleries, while 

 the teeth assist in backward motion in them. The mature larvae obtained in 

 May differ but slightly from these, except that they are then .7 of an inch 

 long, and the pink stripes and marks are brownish. The fourth, fifth and sixth 

 segments are smaller than those preceding or following them. They are quite 

 active, moving up and down their burrows rapidly. 



"By the middle of May the caterpillar has worked its way back lo 

 the place of entrance in autumn, enlarging its way to accommodate its in- 

 creased size, and, after loosely stopping the upper part with a few chips, retires 

 and changes to the pupa. It is then .6 of an inch in length, slender, cylindrical. 

 Color white, except the oblique disc or plate terminating the head, which is 

 made dark by many teeth-like elevations on its surface. The abdominal seg- 

 ments are clothed with hairs, and the last four segments have each a trans- 

 verse row of teeth on the dorsal part, reminding one of a Tortrix or Cossus 

 pupa. The conical tip of the abdomen has many teeth ; these teeth together 

 with the roughness on the head, enable the pupa to worm its way up and down 

 the burrow with readiness. When removed from the stem to the table, it 

 travels about, rolling and worming its way very much as do the pupae of certain 

 stem-boring beetles. The wing and limb covers are free for a considerable 

 distance from their tips." 



43. OiDAEMATOPHORUs BALANOTES Meyrlck. PI. XLIV, fig. 12. PI. 



LIV, fig. 5. 

 Ptcrophoms halanotes Meyrick, Trans. Ent. Soc. Lond. 1907, 503, 1908. 



Id., Gen. Ins. C, 17. 1910. 



Id., Wagner's Lep. Cat. pars 17, 26, 1913. 



Barnes & McDunnough, Check List 151, 1917. 

 Ptcrophorus aquila Meyrick, Trans. Ent. Soc. Lond. 1907, 503, 1908. 



Id., Gen. Ins. C, 17, 1910. 



Id., Wagner's Lep Cat. pars 17, 25, 191.!. 



Barnes & McDunnough. Check List 151, 1917. 



