APPENDIX. 155 



Gastrancistrus longicornis. Fern. Nigro-viridis, antennis 

 pedibusque piceis, genubus, tarsis tibiisque apice fulvis, alis 

 limpidis. Page 105. 



Very dark green, almost black : head and chest very finely 

 shagreened : head a little broader than the chest : eyes dark red : 

 feelers clavate, slender, piceous, longer than the chest ; first joint 

 long and slender ; second slightly cup-shaped ; third and following 

 joints to the seventh linear, nearly equal in size ; club spindle- 

 shaped, rather broader than the seventh joint and more than twice 

 its length : chest oval, rather flat : fore-chest extremely short : 

 shield of mid-chest broad ; sutures of the parapsides indistinct; ax- 

 illa? remote from each other ; scutcheon nearly elliptic?.] : hind- 

 chest rather large, obconical, declining : petiole very short : abdo- 

 men very much compressed, knife-shaped, longer than the chest : 

 sheaths of the oviduct about one-sixth of the length of the abdo- 

 men : legs piceous ; knees, feet, and tips of the shanks tawny : 

 wings colourless ; veins tawny ; ulna shorter than the humerus ; 

 radius more than one-third of the length of the ulna ; cubitus 

 shorter than the radius ; wing-brand very small. Length of the 

 body 1 line ; of the wings 1 J line. 



Gastrancistrus Amaboeus. Fern. Cyaneo-viridis, terebra ab- 

 dominis dimidii longitudine, antennis nigris, pedibus Jlavis, 

 alis limpidis. Page 105. 



Very nearly allied to G. Dryas, but the radius is somewhat 

 shorter, and the colour of the legs is somewhat different. Bluish 

 green : head and chest convex, finely shagreened : head as broad as 

 the chest : feelers black, clavate, shorter than the chest ; first joint 

 stout, linear, tawny; second cup-shaped; third and fourth very 

 small ; fifth and following joints short, broad ; club conical, about 

 twice the length of the tenth joint: chest short, elliptical, very 

 broad : fore-chest very short, not visible above : shield of middle- 

 chest veiy large ; sutures of the parapsides strongly marked, ap- 

 proaching each other behind ; scutcheon rhomboidal, rather large ; 

 axillae separated from each other by one-third of the breadth of the 

 shield : hind-chest short, transverse, declining : petiole very short : 

 abdomen spindle-shaped, greenish blue, compressed, smooth, shin- 

 ing, concave above, keeled beneath, a little longer than the chest, 

 but hardly more than half its breadth, rather hairy towards the tip : 

 sheaths of the oviduct black, hairy, full half the length of the ab- 

 domen : legs yellow ; tips of the feet brown : wings colourless ; fore- 

 wings broad ; veins brown ; ulna but little shorter than the hume- 



