(Page 232) 

 Dull black, with extremely fine and short, rather dense hair vestit'irej 

 the legs black or pitch-brown with reddish-yellow inner femora, knees and 



tarsi. 



The body is extremely finely and densely punctated or shagreened and 

 therefore with dull shine; the head nearly as broad as pronotum, posterJ- 

 orly feebly constricted; antennae long, filiform and not thickened distal- 

 ly, their third joint longer than the second, and all the following con- 

 siderably longer than broad. Pronotum fully as long as broad, much nar- 

 rower then elytra, with anteriorly rounded, posteriorly almost straight 

 sides, scarcely narrowing posteriorly, slightly convex and with a lon^'- 

 itudinal groove in middle-line, which is most distinct posteriorly; the 

 elytra a little longer than pronotum, slightly convex; abdomen posterior- 

 ly distinctly tapering, scarcely narrowing toward base, its third free 

 dorsal joint less distinctly depressed at base than the two first. L. 2. 

 5-3 mm. 



In the O the sixth ventral joint of abdomen somewhat longer than in 

 the Q and the pronotal groove deeper. 



Common everywhere at the brim of ponds, lakes and brooks, especially 



on muddy ground. 



2. Subgenus Ischnopoda Thoms. 



2. T. leucopus Marsh. 



(r/.arsh. Ent. Brit. 506; Cianglb. Kaf. M. II, 244. - flavitarsis Sahib. 

 Kraatz Ins. C. II, 153; f.luls. et Hey Bre'vip. 1875, 365. - chalybaea Srichs. 

 5en. Spec. Staph. 916; Thoms. Skand. Col. Ill, 5). 



Our largest species, easily identified by evenly broad abdomen and the 

 bluish color of the forebody. 



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