184 Journal New York Entomological Society. [Voi. iv. 



spined, but the spines all simple, the seta from a bare cone as before. 

 The coarse setae on the horns still present, rather less in number than be- 

 fore, and the fine branched hairs are more numerous. The long horns 

 bear six kinds of hairs in this stage: (i) the primitive set^, (2) the 

 smooth pale setce, (3) the long pale spinulated hairs, (4) the fine felted 

 secondary hairs, (5) the club-shaped black hairs and (6) the fine spines 

 on the tip. Length 10 to 13.5 mm. 



Stage IX. — (Plate Vni, figs. 5, 6 and 7) Shape as described above. 

 The third, fifth and seventh pairs of appendages longest, second and eighth 

 next, first, fourth, sixth and ninth short. l"he side view (Plate VIII, fig. 

 6) shows how these may be variously elevated by the larva. The body 

 is sparsely clothed with fine dark setae (Plate VIII, fig. 15), the appen- 

 dages both of subdorsal and lateral rows covered only with the fine 

 branched secondary hairs (Plate VIII, fig. 11). The primitive seta; re- 

 main and at the tips of subdorsal horns a circle of very short black 

 branched hairs (Plate VIII, fig, 10). These are absent on the side horns 

 (Plate VIII, fig, 8). The black club-shaped hairs also remain, irregu- 

 larly scattered toward the tips of the long horns ; but all of the stiff pale 

 setse are absent. Any of the appendages of either row may be detached 

 by slight force. They leave a bare area, and the subdorsal ones show a 

 double attachment (Plate VIII, fig. 9) corresponding to seta; i and ii. 

 The larva is quite uniformly colored, varying from tan color to purplish 

 brown. The subventral edge is usually broadly white and the sides and 

 under sides of the horns darker than the upper surface. The fine hairs 

 on the horns are so dense and closely felted that they give the shape to 

 the appendages as shown in the figures 5, 6 and 7. Length of larva 

 13.5 to 22 mm. 



Cocoon. — As usual except that as all the tubercles are shed at the time 

 of spinning, they remain on the outside of the structure and give it a 

 characteristic appearance. 



Food-plants . — Various low shrubs and the lower branches of trees. 

 I have records of oak, chestnut, sassafras, dogwood and ash. 



Fit 



EXPLANATION OF PLATE VIIL 



Diagram of stage I, side view, showing the arrangement of the setK. 



Stage I, two-thirds view X J7-5- 



Stage in, dorsal view )<: 10. 



Stage V, dorsal view y' 5. 



Front view of mature larva enlarged. 



Side view of same. 



Dorsal view of the same ■ 2.5. 



