120 APTERA. 



the ticking of a watch, and is generally conti- 

 nued for a considerable time. That insects 

 possess the faculty of hearing can hardly be 

 doubted, since these Termites will readily an- 

 swer if a pin be tapped upon the table or against 

 the wainscot, so as to imitate their ticking. 

 The sound is supposed to be produced by one 

 sex, for the purpose of attracting the other. 



SPECIFICATION-. 



Termes pulsatorium. T. abdomine oblongo, ore 

 rubro, oculis luteis. Linn. Syst. Nat. 1. p. 1015. 

 Gmel. lip. 2914. 

 Fabr. Spec. Ins. 1. p. 394. Mant.Ins.l.p.248. Ent. 



Syst. 2. p. 87. Hemerobius pulsatorius. 

 Degeer, Ins. 7. p. 41 . t. 4./. 1. T; lignorum. 

 Sulz. Ins.t.M.f. 144. 

 Schaeff. Elem. 1. 126. 



Inhabits Europe and America, and is common in 

 houses, also in collections of dried plants. 



PI. 75. a. Natural size. b. The same magnified. 



