118 Bulletin de la Société Entotnologìque d'Egypte 



Communication 



The Growth off the Antennae 



off Empusa egena Charp. (Oithop.) 

 by D' E. BuGNiON 



Honorary Professor o1' tlic University of Lausainie, 



Freely translated l)y E. W. Adair, B.A., F.E.S. 

 Entomologist to the Coüon Researcli Board, E.uypt (1). 



Ill ÌNIarch 1917, 1 publishetl a note on the growth 

 (>*■ the antenna« of tlie cockroach Periplaneta ajneri- 

 ciuia, base(! on lite examination of specimens caught 

 in Ceyk)n. J had come to tlie conclusion that the 

 growth of the antenna takes ph»ce in this insect b\ 

 successive divisions of th(; ^rd joint. (See C. H. Sor. 

 Biol., Paris, 1917, p. :\\-\ and for a ttanshUion, Ihis 

 I'niletin, p. 56). 



This article deals with the grow lit of the anten- 

 nae of another Orthopteron, Empiisa c<iena Cbahv., 

 brlonging to the family Mantidae. 



E. W. Adaïr in Egypt counted iS joints in the 

 antennae of newly hatched larvae of this insect 

 (Bull. Soc. EiitomöL Egypte, igi/j, p. 76). In aduli 

 specimens caught by me at Aix-en-Provencc and pre- 

 pared in Canada balsam, I ascertained that there 

 are 78 joints in the elegantly bipectinate antenna of 

 the male, 18 mm. long, and 53 only in the shoiter 

 filiform antenna of the female. 



(1) Translated from the « Mémoires de la Sociéfr 

 Zoologique de France », Tome XXVII, 19J7, |). i-J7. witli tli; 

 authorization of (he afoiesaid Society. 



