ELEMENTARY TERMS. 33 
‘Larsus,* the ancle or foot of an insect, generally lone 
and many-jointed. 
CaUDAL-FINS, on the end of fishes tails. 
IX. RELATING TO THE TAIL. 
PREHENSILE, formed for coiling around, and holding 
by, substances. 
Rump, the cordate process supporting the tail of a bird. 
TAaiL-FEATHERS, the large feathers of the tail, general- 
ly 12, sometimes 10, 18, 20, 24. 
EXPANSiLE, capable of being spread. 
Tain-coverts, the clump of feathers next above the 
rump. 
UropyeialL, (or hypochondriac,) several long feathers 
above on each side the tail, differing in form from the 
others. 
X. RELATING TO ‘THE HORNS, ANTEN- 
NAS, &c. 
ANTENN4, the horns or jointed processes on the heads 
of insects, generally forward of the eyes. ‘They are 
short, when not so long as the body ; long, when lon- 
_ ger; moderate, when about equal. 
SETACEOoUS ANTENN®, shaped like a bristle, tapering 
from base to point. 
FusirorM, spindle-form, being largest near the middle 
and tapering both ways. 
LAMINATED, consisting of several thin flat portions. 
FILIFoRM, thread-form, of nearly equal size through its 
whole length. 
CuavaTe, club-form, thickening at the end, sometimes 
ending in a knob. 

* In numbering the joints, the last cylindric one is reckoned, leaving 
nothing out ofthe number but minute claws at the very tip. 
