fee MIGROscer Er 
APRIL, 1897. 
NUMBER 52 NEW SERIES 
Objects Seen under the Microscope. 
By CHRYSANTHEMUM. 
XXXIX.-—THE ANTENNZ OF INSECTs. 
These are of many and varied forms, some being long 
and slender, while others are club-shaped, plumed or of 
irregular shapes. They are classified by Comstock as 
follows: 
1. Setaceous or bristle-like, in which the segments are 
ae 
“successively smaller and smaller, the whole organ taper- 
ing to a point (fig. 1). 
2. Filiform or thread-like, in which each segment is 
of nearly uniform thickness throughout (fig. 2). 
3. Moniliform or necklace-form, in which the segments 
are more or less globose, suggesting strings of beads 
(hie 3)e 
4. Serrate or saw-like, in which the segments are tri- 
