INSECTS. 9 
therefore necessary slightly to enumerate their 
differences. 
Antenna setacea, or setaceous Antenna, means 
one which is shaped like a bristle, or which grow's 
extremely fine and sharp at its termination. 
Antenna JUiformis, or thread-shaped, differs from 
the former in being of equal diameter through- 
out, or not visibly smaller at the tip than in other 
parts. 
Antenna moniliformis, or moniliform, is that in 
which the joints are shaped like the beads of a 
necklace, each joint being globular or nearly so. 
Antenna clamta, clavated or club-shaped, is one 
which thickens at the tip into a knob or small 
club, as in the major part of Butterflies. 
Antenna jissilis, or fissile, is one which is split 
or divided at the tip into several lamellae or flat 
separations, as in the Beetles strictly so called, 
or Scarabaei. 
Antenna pec'tinata, or pectinated, means one 
which is divided along each side into numerous 
processes in such a manner as to resemble the 
teeth of a comb, as may be observed in many of 
the Moth tribe. 
Antenna barbata, or bearded, is one which is 
slightly feathered, either on one or both sides, 
with fine lateral fibres or hairs. 
Antenna perfoliata, or perfoliate, is one in which 
the joints are of a flattened and circular shape, 
with the stem or body of the antenna passing 
through them, as in the leaves of some plants, 
which are called perfoliate from a similar circiim- 
