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 with deep angular incision. 



Like the two preceding species on water plants, often in alluvium. 

 Distributed in Europe; rather common in this country. 



41. St. niveus Fauv. 



(Fauv. Bull. Soc. Linn. Norm. IX, 1865, 307; Rey Bre'vip. 1884, 222; 

 Janglb. Kaf. M. II, 589). 



From pallitarsls , to which it is closely allied, it differs in that, 

 it is considerably smaller, narrower and more of even breadth, tarsi dark- 

 er, as a rule brownish-yellow, the grooves of the forehead more distinct, 

 almost foveate, and that abdomen is less tapering, nearly of equal breadth. 

 L. 4-4.5 mm. 



It is known from a few places in Middle Europe and Scotland. In this 

 country it is apparently so far only found in the northern part of Jut- 

 land at Raebild, south of Aalborg, in alluvium (Auth. 3. 18S7). 



42. St. bifoveolatus xiyllh. 



Uyllh. Ins. Suec. IV, 500; Kraatz Ins. D. II, 781; Thorns. Skand. Col. 

 II, 234; Rey Brevip. 1884, 232; Janglb. Kaf. M. II, 590. - plancus Srichs. 

 ien. Spec. Staph. 723). 



From the following closely allied species it is easily separated by: 

 darker legs and middle-carinated abdominal joints. 



Black, rather glistening, very sparse and fine, whitish haired; an- 

 tennae reddish-yellow with black basal joint, and brownish club; maxil- 

 lary palpi yellow, their third joint darkly brownish; legs black, some- 

 times pitch-black with brownish femora. 



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