(Page 470) 



Reddish-yellow, glistening; elytra and abdomen sparsely haired; 

 elytra blue; the head and tip of abdomen from, and encluding the fifth 

 free joint, also metasternum, and outer third part of femora black; mid- 

 dle joints of the antennae and tip of maxillary palpi often brownish. 



Head as broad as pronotum, in the O larger than in the Q , on sides 

 with scattered, at middle simple punctation; antennae less slender and 

 shorter than in riparius ; pronotum short oval, strongly convex, anteri- 

 orly as broad as long, and as broad as elytra, posteriorly slightly nar- 

 rowing, on sides with scattered and fine punctation, otherwheres smooth 

 and polished, sides very finely, yet distinctly marginated; elytra as 

 long as pronotum, with coarse and rather dense punctation, abdomen fine- 

 ly and sparsely punctate. L. 8-9 mm. 



In the (S'the head is fully as broad as pronotum, and the abdominal 

 sixth ventral joint like in the preceding specied deeply incised. 



AJ lakes, watercourses and on beaches; with us it is local and rather 



rare. It is distributed mostly in Middle and South Europe, is found in 



Finland, but not in Sweden or Norway. 



(Page 471) 



86. ienus Astenus Steph. 



(Steph. 111. Brit. V, 1832, 275; Uanglb. Kaf. M. II, 539. - Sunius 

 Erichs. Kaf. Mk. Br. I, 1839; Jen. Spec. Staph. 637; Kraatz Ins. D. II, 

 720; Thorns. Skand Col. II, 209; Muls. et Rey Bre'vip. 1878, 269). 



The body (Fig. 142) (in our species) narrow, slender and of uniform 



breadth; head large, elongative-square, with short, narrow neck, and 



rather small, rounded, somewhat protruding eyes, in front of these a 



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