STATES OF INSECTS. 321 



hornet, by means of a central sinus, have two obtuse 

 teeth on each. With regard to more direct ramiflca- 

 tions, some male antennae terminate in a fork, or two 

 branches. This is the case with Hylotoma furcata Latr., 

 a saw-fly a ; and the peacock-louse (Nirmus Pavonis 

 Herm.) b . Others, again, have three lateral branches, 

 as in Eulophus Geoffr. a little parasite, the male anten- 

 nae of which send forth a hairy external and rather long 

 branch, from the base of the fourth, fifth, and sixth 

 joints c . In Elater Jlabellicornis L., the eight last joints 

 are flabellate, or elongated and flat, resembling the sticks 

 of a fan in the male d ; in the female they are shorter, and 

 more properly may take their denomination from the 

 teeth of a comb. In Lamjpyris Latreillii Kirby, the an- 

 tennae of the former are flabellate on both sides, while 

 those of the latter are little more than serrate e . These 

 organs are extremely beautiful in the males of the Rhi- 

 jpicerce of Latreille. In JR. marginata K. 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 f . But in none are they altogether so re- 

 markable as in those moths that Linne 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 g . In the females these branches are shorter 



a Plate XI. Fig. 19. b Plate V. Fig. 3. 



« Plate XI. Fig. 18. d Ibid. Fig. 17- 



e Plate XXV. Fig. 11. Linn. Trans.xn. t. xxi./. 4. a. 

 f Ibid.f. 3. g Plate XXV. Fig. 22, 



VOL. III. Y 



