510 MK. W. F. KIRBT ON i-ORKIOULIDJil. 



Genus X. Labidttea, Leach. 

 Leach, Edinb. Encycl. ix. p. 118 (1815) ; Bohrn, Stett. ent. 

 Zeit. xxiv. p. 309 (1863) ; Scudd. Bull. U. 8. Geol. Surv. ii. 

 p. 250 (1876). 

 Type, Foi^ficula riparia, Pall, {gigantea, Fabr.). 



Forficesila, Serv. Ann. Sci. Nat. xxii. p. 32 (1831) ; OrtJi. 

 p. 21 (1839). 



Labidttea eipaeia, Pall. 



Eorficula riparia, Pall. Peise, ii. Anhang, p. 30 (1773). 



ELal. Cosmopolitan. 



I believe that tlie description of the unrecognized Porficida 

 Jierculeana, Fabr., from St. Helena, was probably taken from a 

 dark or discoloured specimen of this insect, whicb is said to 

 attain to a very large size in the island mentioned. 



Labiduea(?) pugnax, sp. n. (Plate XII. fig. 1.) 



(S . Loiig. Corp. 42 millim. ; segm. ult. cum forcip. 20 millim. 



$ . Long. corp. 25 m.illim, ; segm. ult. cum forcip. 9 millim. 



Male. Black, clothed with a fine greyish silky pubescence ; 

 antennae, clypeus, palpi, head and thorax beneath, sides and 

 hind bordei's of pronotum, sutural and mai'ginal edges of tegraina 

 (very narrowly), and those of the exposed part of the wings 

 (narrowly) reddish ; legs uniformly testaceous. Abdomen finely 

 granulated, segments 2-5 with very strong lateral spines, basal 

 segment with smaller ones, hinder edges of segments 3-5 milled 

 above only, terminal segment smooth, much depressed in the 

 middle ; forceps very large, smooth, very slightly dentated on the 

 inner sides, a triangular elevation at the base of the upper carina, 

 a strong tooth on the inside at about one fourth of the length 

 of the forceps, which are wide apart at the base, and run 

 slightly curving outwards for two-thirds of their length, wlien 

 they suddenly curve inwards and almost meet in an obtuse projec- 

 tion, thence they run nearly straight, but slightly converging to 

 the hooked tips, which cross. 



Female similar, but the abdomen is neither spiny nor milled, 

 and the forceps simply curve outwards and then inwards, in a 

 weaker hook than in the male ; they are more strongly and 

 thickly denticulated on the inner edge than in the male, and at 

 about three-fourths of their length there is a small tooth pointing 

 obliquely downwards. 



Sab. North India. 



