320 STATES OF INSECTS. (Jmago.) 
hornet, by means of a central sinus, have two obtuse 
teeth on each. With regard to more direct ramifica- 
tions, some male antenne terminate in afork, or two 
branches. This is the case with Hylotoma furcata, a 
saw-fly*; and the peacock-louse (Nirmus Pavonis’). 
Others, again, have three lateral branches, as in Eulo- 
phus a little parasite, the male antennee of which send 
forth a hairy external and rather long branch, from the 
base of the fourth, fifth, and sixth joints®. In Elater 
flabellicornis, the eight last joints are flabellate, or elon- 
gated and flat, resembling the sticks of a fan in the 
male‘; in the female they are shorter, and more pro- 
perly may take their denomination from the teeth of a 
comb. In Lampyris Latreilliz, the antennze of the former 
are flabellate on both sides, while those of the latter 
are little more than serrate*. These organs are ex- 
tremely beautiful in the males of the Rhzpicere. In R. 
marginata they consist of thirty-two joints, from thirty 
of which issues a branch, the first very short, but the 
rest gradually increasing in length as they approach the 
middle of the antenna; then gradually decreasing to the 
end, so as to represent an expanded fan‘. But in none 
are they altogether so remarkable as in those moths that 
Linné denominates Bombyces Attaci, and some others. 
In these, in the males, these organs in their contour are 
lanceolate, and every joint is furnished with a couple of 
parallel equal branches on each side*. In the females 
these branches are shorter on the whole, and alternately 
2 Prate XI. Fic. 19. » PrateE V. Fic. 3. 
© Pirate XI. Fie. 18. @ Ibid, Fic. 17; 
© Pirate XXV. Fic. 11. Linn, Trans. xii. t. xxi. f. 4. a. 
Ibid. f. 3. ® Prate XXV. Fic. 22. 
