OF THE ANTENNAE OF INSECTS. 399 



S. Organs on antenna (j/"Anthocera loti. 



Fig. I . Enlarged view of surface. 



a. True hair. 



b b b. Organs. Diameter ^^^ of an inch, 

 c c. Cuticular projections. 

 Fig. 2. Section of antenna-wall and sacs. 

 u. Section with papilla at back. 



b, Covering-in membrane, with papilla in centre. 



f. Cuticular projections. • 



T. Antenna 0/ Macroglossa stellatorum. 

 Fig. 1. One segment of antenna. 



a. Organs, large and small. 



b b b. Rows of hairs with large follicles. 



U. 

 Fig. 1 . Last two segments of antenna, showing organs, aaaa. 



Fig. 2. Section of antenna-wall, showing the organs at a a. ; diameter TgVtfth of an inch ; and true hairs 

 at bb. 



V. 



Fig. 1 . Antenna of Pediculus of Crow. 



a a. Organs as in other antennae. 



b b. Hairs (tactile) at apex. 

 Fig. 2. Section of organs. 



Fig. 3. Antenna of Pule.x of Mouse, showing an organ on each segment. 

 Fig. 4. Organs on antenna of Pulex of Mouse. 



