6 THE CANADIAN ENTOMOLOGIST. 
LULA LEON NM ME NE ELA PAIE MER A PT 
and each with one or two long sete. Tarsal piece cylindrical, longer than 
tibia, with double row of spinules beneath, and a long moderately arcuate 
claw (fig. 5). 
Spiracles. Nine pairs. First pair on the inflexed portion of the meso- 
thoracic segment slightly in front of the coxa. The remaining spiracles 
are placed on the sides of the abdominal segments nearer the anterior 
margin. 
The last abdominal segment (fig. 6, underside) has near its basal 
margin on each side a deep pit of oval form. These are certainly not 
spiracles, being very much larger and of different construction. Their 
appearance leads me to suspect them of being glandular fossæ, but of 
what use or why so large comparatively, I am unable to decide. 
/ 
PUPA (fig. 7). The pupa resembles the imago in many of its charac- 
ters, being however about one fourth longer and in the abdominal region 
more slender. The only differences of moment being the following :— 
Thorax at each angle with a stout bristle-like appendage more slender 
towards the tip, about a sixteenth of an inch long. That at the anterior 
angle is supported on a small papilla, the posterior being prolonged from 
the tip of the angle. Terminal abdominal segment above subquadrate, 
emarginate at tip, angles acute and divergent, beneath with a deep sinuous 
groove on each side and a median shallower groove. 
Abdomen above and beneath of nine segments, the first very narrow 
distinctly visible above, beneath visible only at the sides ; second slightly 
broader, beneath nearly entirely concealed. ‘The remaining segments are 
distinctly visible both above and beneath, the distal angles being slightly 
prominent, giving the sides of the abdomen a dentate appearance. 
In assuming the perfect state, the abdomen loses apparently two seg- 
ments above and four beneath. These are accounted for in the following 
way: The first two ventral segments are obliterated, the terminal contains 
the genital apparatus which, with the preceding segment, is retracted and 
becomes concealed. The penultimate segment is thus the sixth of the 
imago which is frequently visible by dissection. The first two dorsal 
segments of the pupa remain in the imago, while the last two are lost as 
indicated above. 
