54 BRITISH OHTHOPTEKA. 



Ces branches different cle ceiles du Forjicula pubescens Gene par 

 1'absence de la partie subcontigue et de 1'epine interne ; elles ont une 

 grande analogic avec ceiles du Forficula decipiens Gene, abstraction 

 t'aite de la longueur proportionnelle de la dilatation, qui n'est que d'un 

 tiers dans decipiens et des deux tiers chez pubescens. Elles se dis- 

 tinguent cependant bien de ceiles de decipiens par le renflement 

 qu'elles presentent a 1'apex interne de la dilatation, renflement qui 

 rappelle 1'epine de pubescens. Forficula Lesnei est en outre constam- 

 ment plus fonce et plus uniforme de couleur que ces deux especes ; 

 il se distingue facilement des deux autres Forjicula a ailes nulles, 

 Tomis Kol. et Aetolica Brunner, dont les pinces des <$ ont une longueur 

 trois fois superieure a celle du pronotum. (Finot, ' Bull. Soc. Ent. 

 France,' (6) vii, p. clxxxix (1887).) 



MALE IMAGO (PI. V, f. o).- -Colour bright sienna- 

 brown, legs and antennas somewhat paler, head with 

 a ruddier tinge. Length 12-14*5 mm. ; length of 

 callipers 2'5-3'5 mm. Antenna consisting of 12 seg- 

 ments. Pronotum squarish, with hind-margin curved. 

 Elytra with margins nearly straight. Wings aborted. 

 Abdomen with small lateral scent-folcfs on segments 3 

 and 4 ; on the anal segment two posterior tubercles ; 

 the subgenital lamina rounded behind. The callipers 

 (fig. 2, no. 8) dilated in the basal half, contiguous and 

 crenulated along the darker inner margin : the dilata- 

 tion ending with a blunt tooth internally : thence 

 branches more slender, and curved almost in the form 

 of a circle : the darker tips not meeting. The pygidium 

 squarish, with two tubercles. 



FEMALE IMAGO (PL V, f. 6). --Much like the male. 

 Length 12-14-5 mm. ; length of callipers about 2 mm. 

 The callipers simple, straight and almost in contact ; 

 the tips, however, curved inwards slightly. Pygidium 

 very small. 



NYMPH. Since the imagines are wingless, the 



o o 



nymphs, except when they are quite small, closely 

 resemble them. The callipers are rather long and 

 very slender. It does not seem clear whether the sex 

 of the larger nymphs may be distinguished, in this 

 and other earwigs, by means of the callipers when they 

 are approaching maturity : in general they appear to 

 resemble those organs in the female, which may be the 

 more primitive form. 



