302 THE GYPSY MOTH. 



and eleven, there is an orange-colored retractile tubercle, and 

 also one on each side of the dorsal line, near the front edge 

 of segments five, six, seven and eight, of the same color, but 

 much smaller. There are four rows of tubercles on each side, 

 which, named from above, may be called the subdorsal, the 

 lateral, the stigmatal and the substigmatal row, each with one 

 tubercle on each segment after the head. The tubercles of 

 the subdorsal rows on the second segment (first after the 

 head), on the front half of the segment, are subquadrate in 

 form, and but slightly separated from each other by the dorsal 

 line. The subdorsal tubercles of the third and fourth seg- 

 ments are smaller, and nearly elliptical in outline, while 

 those on the remaining segments are larger and more nearly 

 circular. The tubercles of the lateral row are smaller than 

 those above, and on segments five to thirteen inclusive they 

 are partially fused with those of the stigmatal row ; but as 

 they are a little further forward than those below, the fusion 

 gives an obliquely elongated tubercle. To effect this fusion 

 the tubercles of these two rows are brought towards each 

 other. The tubercle of the stigmatal row, on the second seg- 

 ment, is large, somewhat produced, and directed obliquely 

 forward. The substigmatal row consists of medium-sized 

 tubercles, lying directly above the legs and prolegs, and 

 about half-way between them and the stigmatal row. A little 

 below, and behind these tubercles, on segments seven to 

 eleven inclusive, is a very small tubercle, and on segments 

 five, six, eleven and twelve there are two small tubercles on 

 each side beneath, the inner ones being much the smaller. 

 The tubercles of the subdorsal and lateral rows are armed 

 with black, pointed spines and a few pale-yellow hairs, while 

 the remaining tubercles are armed with longer pale-yellow 

 hairs. On each side of the dorsal line, near the subdorsal 

 tubercles, on segments three to twelve inclusive, is a very 

 small tubercle, with one black spine and occasionally a few 

 pale-yellow hairs. 



Third Larval Stage. Length, 10 mm. (a little less than 

 one-half of an inch), immediately after molting, and the 

 head is 1.8 mm. (about seven hundredths of an inch) in 

 width, shining black, with numerous pale-yellow hairs scat- 

 tered over the surface. The general color of the body is 



