inhabiting the Arctic Region. 337 



than the thorax ; metapodeon slightly concave, occupying more than 

 one-third of the dorsum ; octoon not half the length of the metapo- 

 deon ; ennaton shorter than the octoon ; decaton still shorter ; pro- 

 telum short ; paratelum and telum very short : legs fulvous ; thighs 

 green, their tips fulvous ; tips of the tarsi fuscous. 

 Alten. 



Lamprotatus Icelos. mas. Viridis, abdomine ceneo, antennis piceis, 

 pedibus fulvis, femoribus viridibus, mesotibiis apice et mesotarsis 

 fuscis, alis limpidis. Fern. ? Antennis nigris, abdomine viridi, 

 femoribus fulvis basi fuscis. (Corp. long. lin. 1 ; alar. lin. 2.) 



Male. — Head and thorax green, convex, finely squameous : head 

 a little broader than the thorax : antennae piceous, filiform, as long 

 as the thorax ; first joint long, stout ; second cyathiform ; third and 

 fourth very minute ; fifth and following joints long, linear, suc- 

 cessively decreasing in length ; club fusiform, twice the length of 

 the tenth joint : thorax elliptical: prothorax transverse, rounded in 

 front, its breadth much more than twice its length : scutum of the 

 mesothorax large ; sutures of the parapsides very distinct ; axillae 

 large, triangular, approaching each other; scutellum rhomboidal, 

 having a transverse suture near its hind border : metathorax trans- 

 verse, very short : propodeon large, obconic, decumbent : podeon 

 stout, short : abdomen aeneous, oval, flat, smooth, shining, shorter 

 than the thorax ; metapodeon large ; octoon, ennaton, decaton and 

 protelum of moderate size ; paratelum and telum very short : legs 

 fulvous ; coxae and thighs green ; tips of the tarsi fuscous ; tarsi and 

 tips of the tibiae of the middle legs piceous : wings limpid ; ner- 

 vures piceous ; humerus much less than half the length of the wing ; 

 ulna rather more than half the length of the humerus ; radius much 

 longer than the ulna ; cubitus much shorter than the ulna ; stigma 

 large, emitting a short branch. 



Female ? — Antennae black, clavate, as long as the thorax ; first 

 joint long, slender, green ; second cyathiform ; third and fourth very 

 minute ; fifth and following joints to the tenth successively shorter 

 and broader ; club elliptical, broader than the tenth joint, and more 

 than twice its length : abdomen oval, green, convex, keeled beneath, 

 much shorter than the thorax ; metapodeon large ; octoon and fol- 

 lowing segments short : legs fulvous ; coxae green ; thighs fuscous 

 towards the base ; tarsi yellow, their tips fuscous. 



Alten. 



Seladerma Mazares, mas et fern. Viride, cupreo varium, antennis 

 nigris, pedibus fulvis, femoribus basi viridibus, alis limpidis. 

 (Corp. long. lin. If— 2 ; alar. lin. 2|— 3.) 



Male. — Body slender : head and thorax convex, bright green, 

 finely squameous : head large, broader than the thorax : antennae 

 black, stout, filiform, longer than the thorax ; first joint long, sub- 

 clavate ; second cyathiform ; third and fourth very minute ; fifth and 

 following joints to the tenth long, linear, successively decreasing in 

 length : thorax fusiform : prothorax transverse, narrower in front ; 



