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 punctation, ground surface very finely shagreened and with a flat im- 

 pression behind middle on each side of the middle-line; elytra peculi- 

 arly long, i time longer than pronotum, punctated and the surface sha- 

 greened about like same, distinctly uneven, with parallel sides; abdom- 

 en finely and rather densely punctated, rather broadly marginated; tarsi 

 short, their third joint bilobed, the fourth deeply cleft and bilobed. 

 L. 5.5-6 mm. 



In the ff the hind tibiae are distinctly undulated, without tooth 

 at tip; abdominal third and fourth ventral joints are posteriorly semi- 

 circularly impressed, densely haired and feebly emarginate, the fifth 

 impressed at middle and at base, posteriorly haired, the sixth at tip 

 rather deeply incised and posterior margin of the incision slightly el- 

 evated. - in the o the abdominal sixth ventral joint is acutely trian- 

 gularly prolonged. 



In ditches, at rivers and lake shores on water-plants; distributed 

 in North and Middle Europe, not rare in this country. 



39. St. binotatus Ljungh. 



(Ljungh. Web. u. Mohr Arch. I, 66; Erichs. Kaf. Mk. Br. I, 561; Jen. 

 Spec. Staph. 721; Kraatz Ins. D. II, 779; Thorns. •Skand. Col. II, 232; 

 Rey Brevip. 1884, 218; ianglb. Kaf. M. II, 588). 



From pubescens , which it strongly resembles, it is separated espe- 

 cially by the following details: 



It is considerably smaller and narrower, the head is not as broad, 

 pronotum more oblong, elytra a little shorter, 1 '/g times as long as pro- 

 notum, almost smooth, together v.ith pronotum with more robust anc denser 



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