APPENDIX. . 157 



than the chest ; metapodeon long ; octoon and following segments 

 shorter : legs bright yellow ; tips of feet brown : wings colourless ; 

 fore-wings broader ; veins yellow ; ulna about half the length of the 

 humerus; radius shorter than the ulna; cubitus still shorter ; wing- 

 brand small. Length of body J line ; of the wings \\ line. 



Gastrancistrus Geganius. Mas. Purpureus, abdomine basi 

 viridi, anlennis femoribusque fuscis, pedibus flavis, alis Urn- 

 pidis. Page 105. 



Purple : head and chest broad, convex, finely shagreened ; 

 head a little broader than the chest, inclining to bronze colour : 

 eyes and eyelets or ocelli dark red : feelers 13-joipted, brown, clavate, 

 much shorter than the chest ; first joint spindle-shaped, long, yellow ; 

 second cup-shaped, pale brown ; third and fourth very small ; fifth 

 and following joints transverse, slightly cup-shaped, successively 

 decreasing in length; club oval, broader than the tenth joint, and 

 more than twice its length : chest oval, thick, broader in front than 

 behind; fore-chest very short, just visible above; shield of the 

 middle-chest broad; sutures of the parapsides rather indistinct ; ax- 

 illae separated by less than one-third of the breadth of the chest ; 

 scutcheon rhomboidal ; hind-chest small, short-obconic, slightly de- 

 clining, nearly smooth, with a brassy tinge, having a slight ridge 

 along the middle; petiole very short: abdomen flat, linear, smooth, 

 shining, green towards the base, hairy at the tip, a little longer than 

 the chest, but not more than half its breadth ; metapodeon long ; 

 octoon shorter ; ennaton and following segments still shorter : legs 

 yellow ; thighs and shanks rather stout, the former brown : wings 

 colourless ; veins yellow ; ulna not half the length of the humerus ; 

 radius a little longer than the ulna ; cubitus as long as the ulna ; 

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

 1J line. 



Gastrancistrus Fidenas. Mas. Niger, antennis piceis, pe- 

 dibus flavis, alis limpidis. Page 105. 



Black : head and chest black, convex, shagreened, dull ; head 

 large, broader than the chest: eyes piceous: eyelets red: feelers 

 piceous,submoniliform, as long as the chest ; first joint yellow r , long 

 and slender ; second cup-shaped ; third and fourth very minute ; 

 fifth and following joints to the tenth of moderate size, subquadrate; 

 club ovate-conical, a little broader than the tenth joint and more 

 than twice its length : chest nearly elliptical : fore-chest short, just 

 visible above ; shield of the middle-chest broad ; sutures of the pa- 

 rapsides not very distinct, approaching each other behind ; scutcheon 



