92 LABIDUKIDA.. 



about the middle, then straight, parallel, hooked and crossing at 

 the apices, sometimes with a tooth on the inner margin. Forceps 

 of 5 trigonal as far as the middle, nearly straight, typical of 

 the genus. 



Assam : Sibsagar {Ind. Mus.), Kurseong, at 5000 ft. (Brit, Mus., 

 Ind. Mus., coll. Burr) ; Nepal : Soondrijal {Ind. Mus.). 



Also known from New Guinea (Borm.). 



Type in the Genoa Museum. 



The double spines and abbreviated wings render this a very 

 distinct species. De Bormans gives the wrong segments in 

 enumerating the spines. The milling of the segments is always 

 stronger towards the sides and on the second segment shows the 

 beginning of development into the spines ; on the sixth segment 

 the spines are feeble, and show obsolescence back to the milling. 

 The spines are blunt and recurved. 



Relative to this species, Dr. Annandale makes the following 

 note : " . . . . imder stones at edge of mountain streams, 

 practically in the vt^ater. When forced towards the stream, they 

 swam rapidly on the surface, but they did not enter the water of 

 their own accord. Their position must have rendered them liable 

 to be submerged or washed away by sudden floods." 



47. Forcipula trispinosa, DoJirn. (Fig. 26.) 



Labidura trispinosa, Dohrn, (63) p. 310. 



Forcipula trispinosa, Bonn. (00") p. 30 ; Kirby, (04) p. 9 ; Burr, 



(04) p. 289, (053) p. 27, (07-) p. 207. 

 Labidura moro.>a, Kirby, (91) p. 513 ; Borm. (00") p. 36. 

 Forcipula morosa, Kirby, (04) p. 9. 



Of medium size ; general colour black, with dense yellowish 

 pubescence. Antennae typical, tawny. Head black. Pronotum 

 black, the sides tawny, square. Elytra exceedingly finely punctu- 

 late, neai'ly smooth ; black, with yellowish pubescence. Wings 

 smooth and black, the tips yellowish. Legs uniform tawny. 

 Abdomen deep blackish chestnut, exceedingl}^ finely punctulate, 

 posterior border of each segment milled ; sides of segments three 

 to five in the S with a distinct sharp slender spine ; in the $ with 

 two spines but no tubercles. Last dorsal segment squai'e, smooth, 

 with a deep median impression ; posterior mai'gin truncate in S , 

 simple but milled in $ , with a blunt tubercle over the root of 

 each branch of the forceps. Penultimate ventral segment square. 

 Forceps long, with branches in the S remote at the base, trigonal, 

 straight for about two-thirds of their length, with a long sharp spine 

 on the inner margin about the middle of the straight part ; at two- 

 thirds of their length they are bent in and armed with a second 

 sharp tooth ; beyond this they are sti'aight to the points, which 

 are hooked inwards. In the $ the branches are subcontiguous, 

 stout, trigonal, gradually tapering and 8traight, the inner margin 

 crenulate, and a small sharp tooth just before the apex which is 

 hooked. 



There is a form, occasioned by stunted growth or defective 



