218 APPENDIX. 



suture along each side, and a slight transverse channel near the tip : 

 hind-chest large, obconical, declining, with a slight ridge along the 

 middle and a rim on each side, and having also a transverse ridge 

 near the tip : petiole very short : abdomen depressed, smooth, nearly 

 linear or rather narrower at the base than at the tip, green, dark 

 purplish copper-colour on the disk, much narrower than the chest, 

 and hardly more than half its length ; metapodeon occupying about 

 half the back ; octoon and following segments successively decreas- 

 ing in length : legs tawny ; hips and thighs green ; four hinder 

 legs with yellow knees and feet, and with piceous shanks and tips of 

 feet : wings colourless ; veins piceous ; ulna hardly half the length 

 of the Immerus ; radius much longer than the ulna ; cubitus more 

 than half the length of the ulna ; wing-brand very small. Length 

 of the body 1 line ; of the wings J line. 



TRIGONODERUS Polichna. Mas. Viridi-cyaneus , antennis ni- 

 gris pedibus Jlavis, mesotibiis fulvis, alls limpidis. Page 

 128. 



Head and chest convex, finely shagreened, very dark bluish 

 green : head much broader than the chest : eyes and eyelets dark 

 red : feelers black, slender, subclavate, hairy, a little shorter than 

 the body ; first joint long, slender; second cup-shaped; third and 

 fourth very small ; the following joints to the tenth long, but suc- 

 cessively decreasing in length ; club spindle-shaped, a little broader 

 than the tenth joint, and nearly twice its length : chest long, spin- 

 dle-shaped : fore-chest narrow and declining in front ; its length 

 above about one-eighth of its breadth : shield of the mid-chest 

 long ; sutures of the parapsides indistinct ; axillae parted by rather 

 less than one-fourth of the breadth of the chest; scutcheon sub- 

 rhomboidal, with a suture along each side, and a transverse indis- 

 tinct channel near the tip : hind-chest large, obconical, declining, 

 with no ridge nor rim : petiole very short : abdomen depressed, 

 finely shagreened, bluish green, very slightly increasing in breadth 

 from the base till near the tip, narrower but not shorter than the 

 chest; metapodeon occupying about one-fifth of the back; octoon 

 and following segments rather shorter and of equal length : legs 

 yellow ; hips green ; fore-shanks and fore-feet dull yellow ; middle 

 shanks and tips of four hinder feet dark tawny : wings colourless ; 

 veins tawny ; ulna rather stout, a little more than half the length of 

 the humerus ; radius a little longer than the ulna ; cubitus not half 

 the length of the ulna ; wing-brand very small. Length of the body 

 1 J line ; of the wings 2 lines. 



