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 Elytra scarcely longer than pronotum. L. 3.5mm. :44. St. foveicollis Kr. 



49. Legs reddish yellow with dark knees. Elytra very uneven. L. 4-4.5 



mm 45. St. nitidlusculus Steph. 



Legs clearly and entirely reddish-yellow. Elytra smooth. Body nar- 

 row. L. 3-3.5 mm 46. St. flavipes Steph. 



4. Subgenus Mesostenus Rey. 



50. Abdomen rather thickly marginated 51. 



Abdomen peculiarly finely marginated, almost round. L. 3-3.5 mm... 



52. St. pallipes Jravh. 



51. Elytra at suture noticeably longer than pronotum 52. 



Elytra at suture not longer than pronotum, distinctly broadened 



posteriorly. L. 3-3.5 mm 51. St. Erlchsoni Fye. 



52. Legs entirely reddish-yellow or only the knees narrowly brownish. ;53. 

 Legs predominatingly pitch-brown or yellowish-brown, only the inner 



half of femora reddish-yellow. L. 3.5 mm 47. St. palustris Er. 



53. Dorsal side of body rather glistening with ore- or bronze-reflec- 



tion 54. 



Body dull or feebly glistening, without metallic reflection. L. 4-4.5 

 mm 48. St. geniculatus iravh. 



54. Pronotum at middle not grooved, but smoothed. Abdomen with dense and 



rather robust punctation. L. 4 mm 49. St. flavipalpis Thoes. 



Pronotum at middle flatly grooved, the groove punctated. Abdomen 

 less densely and especially posteriorly very finely punctated. 

 L. 3.5-4 mm 50. St. impressus Derm. 



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