74 



Annals Entomological Society of America [Vol. XII, 



The location and total number of the pores on various 

 parts of the army worm are as follows: front, 2; adfrontal 

 piece, 2; epicranium, 22; antennas, 2; mandibles, 4; labium, 6 

 labrum, 2; maxillae, 20; trochanters, 18; tibiae, 6; tarsi, 6 

 prothorax, 6; last abdominal segment, 2; and anal prolegs, 4 

 making 102 pores in all. 



Figs. .3 to 7. — Disposition of pores or punctures on leg, fi'-st thoracic segment and 

 on anal proleg of a small army worm, X 20. Figs. 3 and 4, anterior and 

 posterior surfaces, respectively, of left prothoracic leg. Fig. .5, most of tergum 

 of prothorax; the shield or strongly pigmented stripes are more heavily shaded 

 than are the lightly pigmented portions. Figs. 6 and 7, dorsal and ventral 

 surfaces, respectively, of same anal proleg. Femoral pores a (Feu), b (Feb) 

 and c {Fee}; tibial pore (Tha); tarsal pore {Ta); thoracic pores a (Tla), b (Tib) 

 and c Tic); anal-proleg pores a (APa) and b {APb); and secondary seta (^a)- 



Other species. The integuments of other species examined 

 were not studied as critically as were those of the army worm, 

 and consequently, some of the pores have certainly been over- 

 looked, particularly the ones most difficult to be found. Some 

 of the preparations had to be bleached with chlorine gas before 

 they could be studied, but most of them were so light in color 

 that it was difficult to find some of the pores, and the butterfly 



