216 APPENDIX. 



breadth from the base till near the tip, shorter and much narrower 

 than the chest ; metapodeon not occupying more than one-sixth 

 of the hack ; octoon and following segments of nearly equal size : 

 legs tawny ; hips green ; thighs piceous towards the base ; four 

 hinder feet yellow with brown tips : wings colourless ; veins tawny ; 

 ulna more than half the length of thehumerus ; radius much longer 

 than the ulna ; cubitus much shorter than the ulna ; wing-brand 

 large. 



Female. Feelers black, a little longer than the cbest ; first joint 

 tawny : abdomen long spindle-shaped, smooth, bluish green, pur- 

 plish bronze on the disk, concave above, slightly keeled beneath, 

 much longer and narrower than the chest, hairy towards the tip ; 

 metapodeon not occupying more than one-eighth of the back : oc- 

 toon and ennaton short ; decaton and three following segments 

 longer. Length of the body 1 If line ; of the wings 2 2| 

 lines. 



TRIGONODERUS Lappa. Mas. Cyaneo-mridis, abdomine pur- 

 pureo-cupreo, antennis nigris, pedibus piceis, tarsis flams, alis 

 limpidis. Page 128. 



Body narrow : head and chest convex, finely shagreened, dark 

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

 dark red : feelers black, filiform, rather broad, shorter than the 

 chest ; first joint long, spindle-shaped; second cup-shaped; third 

 and fourth very short; the following joints to the tenth successively 

 decreasing in length ; club spindle-shaped, rather more than twice 

 the length of the tenth joint : chest long-elliptical : fore-chest long ; 

 its length more than one-half of its breadth : shield of the mid-chest 

 short and rather flat ; sutures of the parapsides strongly marked ; 

 axillce parted by one-fourth of the breadth of the chest ; scutcheon 

 subrhomboidal, rather flat, with a suture along each side, and 

 a slight transverse channel near the tip : hind-chest large, obconical, 

 slightly declining, with no ridge nor rim : petiole very short : abdo- 

 men depressed, smooth, dark purplish bronze-colour, slightly in- 

 creasing in breadth from the base till near the tip, much shorter and 

 narrower than the chest ; metapodeon long : legs piceous ; hips 

 green ; fore-feet pale tawny ; four hinder-feet yellow with brown 

 tips : wings colourless, rather short ; veins pale tawny ; ulna full 

 half the length of the humerus ; radius much longer than the ulna; 

 cubitus a little more than half the length of the ulna ; wing-brand 

 very small. Length of the body J 1 line ; of the wings 1 J 1 

 line. 



Var. /3. Aut species distincta. Thighs and shanks dull tawny ; 

 veins of the wings dark tawny. 



