520 



MERISTIC VARIATION. 



[part I. 



this is a possible condition is proved beyond doubt by the 

 succeeding case. 



Right Antenna, Scape precisely as in left antenna. The 

 1st funicular (2nd antennary) has two sockets at its apex, placed 

 like those on the 3rd funicular of the left side, the anterior socket 

 being the lower and the posterior socket being the higher. The 

 anterior socket bears a normal right antenna, r 3 . The posterior 

 bears the structure shewn in the figure. This appendage has 

 unfortunately been broken, but enough remains to suggest the 

 original structure. It consists of five funicular and a 1st club- 

 joint. The 5th joint of the whole funiculus bears a large socket 

 looking downwards and forwards, its other socket looking back- 

 wards and upwards. From the former the original continuation 

 has been lost. The latter bears the 6th funicular and its 1st 

 club-joint, this again having an empty socket. 



The plane of the two sockets of the 5th funicular is oblique 

 to the horizon, like that of I 1 and P. Though it is clearly im- 

 possible to shew how this antenna was in its unbroken state, 

 we may note that if it were continued in the way suggested 

 by the dotted lines it would have borne a complementary pair 

 of clubs, r 1 and r 2 , like I 1 and P of the other side, placed like 

 them in an oblique plane nearly corresponding with DPP of the 

 Scheme. 



This specimen was kindly entrusted to me by M. Henri 

 Gadeau de Kerville. He tells me that he believes a description 

 of it has already appeared, but this I have failed to find. I 

 have therefore ventured to describe it again, with apologies to 

 the original describer. The specimen bears a label in the hand- 

 writing of the late Major Parry and was no doubt in his cele- 

 brated collection of Lucanidae. 



800. Melolontha vulgaris : right antenna bearing a pair of incomplete 

 supernumerary antennae (Fig. 177). The first joint is normal ; it bears a 

 second joint of singular form, consisting of a long anterior branch, and 

 a short posterior branch i the length of the anterior. The anterior 

 bears two clubs in the manner shewn in the figure (Fig. 177). Of these 



Fin. 177. Melolontha vulgaris, No. 800. Lettered according to the view that R 

 is the normal right club. L, the supernumerary left, and 11' the supernumerary 

 right. (From Wesmael.) 



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