inhabiting the Arctic Region. 333 



cyathiform ; third and fourth very minute ; fifth and following joints 

 to the tenth long, linear, successively decreasing in length ; club 

 fusiform, more than twice the length of the tenth joint : thorax fusi- 

 form : prothorax transverse, narrower and rounded in front ; its 

 breadth much more than twice its length : scutum of the mesothorax 

 very long; sutures of the parapsides distinct ; axillae large, triangular, 

 approaching near to each other ; scutellum rhomboidal, having a 

 transverse suture near its hind border : metathorax transverse, very 

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

 short : abdomen nearly linear, flat, smooth, shining, narrower and a 

 little shorter than the thorax; metapodeon large ; octoon, ennaton, de- 

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

 legs fuscous ; coxae green ; knees and tarsi fulvous, the latter darker 

 towards their tips : wings limpid ; nervures fuscous ; humerus much 

 less than half the length of the wing ; ulna not more than half the 

 length of the humerus ; radius very much longer than the ulna ; cu- 

 bitus much shorter than the ulna ; stigma of moderate size, emitting 

 a short branch. 

 Alten. 



Lamprotatus Mazceus, fem . JEneus, antennis piceis, pedibus fulvis, 

 alis limpidis. (Corp. long. lin. 1^; alar. lin. 2^.) 



Body convex, aeneous : head and thorax finely squameous ; head a 

 little broader than the thorax : antennae slender, subclavate, piceous, 

 a little longer than the thorax ; first and second joints green ; first 

 long, slender ; second cyathiform ; third and fourth very minute ; fifth 

 and following joints long, linear, successively decreasing in length 

 and very slightly increasing in breadth ; club fusiform, twice the 

 length of the tenth joint : thorax elliptical : prothorax transverse, 

 narrower in front ; its breadth much more than twice its length : 

 scutum of the mesothorax broad ; sutures of the parapsides distinct, 

 approaching each other ; axillae large, triangular ; scutellum rhom- 

 boidal, having a transverse suture near its hind border ? : metathorax 

 transverse, very short : propodeon large, obconic, decumbent : po- 

 deon short, stout : abdomen oval, much shorter than the thorax ; 

 metapodeon occupying nearly one-third of the dorsum ; octoon about 

 half the length of the metapodeon ; ennaton much longer than the 

 octoon ; decaton much shorter than the ennaton ; protelum as long 

 as the decaton ; paratelum and telum very short : legs fulvous ; coxae 

 green : wings limpid, ample ; nervures fuscous ; humerus much 

 shorter than half the length of the wing ; ulna hardly more than 

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

 ulna ; cubitus much shorter than the ulna ; stigma of moderate size, 

 emitting a short branch. 



Alten. 



Lamprotatus Brises, fem. JEneo-viridis, abdomine cyaneo, antennis 

 nigris, pedibus jiavis, femoribus basi viridibus, alls limpidis. 

 (Corp. long. lin. J — 1 ; alar. lin. 1^ — 1±.) 



Body convex : head and thorax aeneous-green, finely squameous : 



