OLFACTORY ORGANS OF LEPIDOPTERA 37 



1 A) seem to lie on the union of the radius and media, but cross 

 sections (figs. 6 A and 9 C) show that nos. 1 and 2 He on the 

 media while no. 3 lies on the radius. No. 4 (fig. 1 B) lies on the 

 broad portion of the subcosta which unites with the radius and 

 media. No. 5 lies on the radius and no. 6 (fig. 1 C) on the 

 media, but perhaps no. 6 lies more correctly on the union of the 

 radius and media (fig. 6B). No. 7 (fig. 1 D) is located on the 

 broad portion of the subcosta. 



The number of pores in groups nos. 1 to 7 on the right wdngs 

 are as follows: No. 1 — 11, no. 2 — 52, no. 3 — 56, no. 4 — 67, no. 

 5- — 128, no. 6 — 44, and no. 7 — 12; on the left wings: no. 1 — 10, 

 no. 2 — 50, no. 3 — 52, no. 4 — 74, no. 5 — 143, no. 6 — 51, and no. 

 7 — 11. On the dorsal surface of the right front wing, the scat- 

 tered pores are located as follows : 2 at the distal end of the costa 

 (fig. 1 A), 10 extending the full length of the subcosta, 2 near the 

 base and 5 at the distal ends of the radial branches, 6 at the 

 distal ends of the medial branches, and 2 at the distal end of the 

 anal vein; on the ventral surface of the same wing: 8 extending 

 one-half the length of the costa (fig. 1 B), 5 near the middle of 

 the radius and 8 at the distal ends of its branches, 6 at the distal 

 ends of the medial branches, and 2 at the distal end of the 

 radial vein. On the dorsal surface of the right hind wing, the 

 scattered pores are as follows: 3 near the base of the subcosta 

 (fig. 1 C), 1 at the distal end of a radial branch, 6 near the 

 base of the media, and 6 on the medial branches; on the ventral 

 surface of the same wing: 1 near the base of each the costa and 

 subcosta (fig. 1 D), 1 at the distal end of a radial branch, 4 on a 

 medial branch, and 2 at the distal end of the second branch of 

 the anal vein. The disposition of the scattered pores on the 

 left wings is very similar to that just given for the right wings. 



Groups nos. 8 and 9 of the olfactory pores lie on the outer sur- 

 face of the trochanter (fig. 2 E) of each leg near the anterior 

 margin, while no. 10 is located on the inner surface of the same 

 segment (fig. 2 F). No. 11 lies at the proximal end of the 

 femur (fig. 2 F) of each leg on the inner surface near the posterior 

 margin, and the two isolated pores (fig. 2 E, a) lie at the same 

 position on the outer surface of each leg. 



