6 MANDIBULATA. — PEKMAPTERA. 



cially at Darenth wood, in June : it also occurs in plenty at Dover, 

 and near Edinburgh. " Berwick upon Tweed." — C. C. Babmgton, 

 Esq. 



Sp. 4. forcipata. Plate xxviii. f. 4. — Capite toto ferrugineo, oculis atris, 

 thorace pallida vitta longitudinali atra, elytris pallide testaceis, abdomine fer- 

 rugineo-testaceo, forcipe elongatd paullo incurvata pallida, apice piced, in 

 faemina subrecta, apice decussatd. (Long. corp. 8 — 10 lin.) 



Fo. forcipata. Steph. Catal. i. 299. No. 3302. 



Head totally ferruginous ; eyes black ; thorax pale, with a broad longitudinal 

 streak ; elytra pale testaceous ; abdomen rusty-testaceous^ finely punctured, 

 and with the terminal segment as in Fo. borealis, and armed in the male 

 with a pair of very long forceps, which are slightly incurved, armed with a 

 large triangular tooth within rather distinct from the base, of a pale red, 

 with the extreme inner edge and the apex somewhat pitchy ; in the female 

 nearly'straight, being only a little decussating at the apex ; legs very pale, 

 with straight tibiae. 

 Less abundant than the last : found at Coombe wood on high 



trees, and also in the New Forest. "Bath." — C. C. Babington, 



Esq. 



Genus II.— CHELIDURA, Latreille? 



AntenncB moderate, twelve-jointed, the basal one stout, the second very 

 minute, third rather slender and longish, the remainder of nearly equal 

 length and form, the terminal one long, a little ovate at the apex. Palpi as 

 in Forficula ; head small, rounded-triangular ; thorax quadrate, depressed ; 

 body glabrous ; elytra short, truncate ; wings none ; abdomen slightly 

 widened towards the apex, the base with an elongate carina on each side, 

 the apical joint with four tubercles, with a truncate-quadrate projection 

 between the forceps, which are remote at their origin, slightly bent, and 

 have a tooth in the middle of the inner edge in the male ; they are nearly 

 straight and simple, but remote in the female. 



Not having Latreille's Families Naturelles to refer to, I am not 

 positive that this is really synonymous with his genus Chelidura, but 

 I believe that I am correct. I am equally uncertain as to the name 

 of the species, from being unable to obtain a sight of Hagenbach*'s 

 Fauna Helv., to which Charpentier refers, without describing the 

 insect, but in his observations he notices sufficient to enable me to 

 arrive at the fact. The present genus not only differs from Forficula 

 in being totally apterous, but in having the forceps remote at their 

 origin, as in Labidura, with a tooth in the middle of the inner edge, 

 and a quadrate appendage to the terminal joint of the abdomen 



