APPENDIX. 209 



rim on each side : petiole very short: abdomen elliptical, smooth 

 (that is, comparatively, for in this and several other species of Ptero- 

 malus, it appears slightly shagreened when highly magnified), dark 

 purplish bronze, brassy at the base and at the tip, depressed above, 

 hardly keeled beneath, very little longer and broader than the chest ; 

 metapodeon as long as the octoon, hind-border slightly convex with 

 anotch in the middle ; octoon and four following segments of mode- 

 rate and nearly equal size; telum very small: legs tawny ; hips green; 

 tips of the feet brown : wings colourless, rather short ; veins pale 

 tawny ; ulna rather less than half the length of the humerus ; radius 

 a little shorter than the ulna ; cubitus shorter than the radius ; 

 wing-brand extremely small. Length of the body 1 line ; of the 

 wings 1^ line. 



PTEROMALUS Orthagus. Fern. Cyaneo-viridis, abdomine cu- 

 preo-purpureo, antennis nigris, tibiis piceis, tarsis fulvis, alis 

 limpidis. Page 126. 



Head and chest bluish green, convex, finely shagreened : head 

 as broad as the chest : eyes and eyelets red : feelers black, shorter 

 and more clavate than those of P. Priansos ; first joint green, long, 

 slender ; second cup-shaped ; third and fourth very small ; the fol- 

 lowing joints to the tenth short, transverse ; club nearly oval, 

 broader than the tenth joint and more than twice its length : chest 

 oval : fore-chest very short ; its length not more than one-tenth of 

 its breadth : shield of the middle-chest rather large ; sutures of the 

 parapsides very indistinct; axilla parted by one-fourth of the 

 breadth of the chest ; scutcheon subrhomboidal, with a suture along 

 each side : hind-chest transverse, rather short, with a slight ridge 

 along the middle and a rim on each side : petiole very short : abdo- 

 men spindle-shaped, smooth, blue, coppery purple on the disk, 

 bright green at the base, depressed above, slightly keeled beneath, 

 longer and much narrower than the chest ; most of the segments of 

 moderate and nearly equal length : hips and thighs green ; shanks 

 piceous ; knees and feet tawny ; tips of four hinder- feet piceous : 

 wings colourless ; veins pale tawny ; ulna hardly half the length of 

 the humerus ; radius as long as the ulna ; cubitus much shorter 

 than the radius ; wing-brand very small. Length of the body 1 J 

 line ; of the wings 2 lines. 



PTEROMALUS Diomedon. Fern. Purpureo-viridis, abdomine 

 viridi-cyaneo, antennis nigris, pedibus flavo-piceis, femoribus 

 viridibus, alis limpidis. Page 126. 



Head and chest dark green tinged with purple : head very little 



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