(Page 482) 



feebly bilobed, cleft to the middle 3. 



Tarsal fourth joint deeply cleft and bilobed, broader than the third, 

 which occasionally also is bilobed 4. 



3. Hind tarsi slender and long, almost as long as the tibiae; their 



first joint longer than the claw-joint. The abdominal first 

 three free dorsal joints with a fine carina at base in the mid- 

 dle-line or without carinae: . 1. . Subgenus Stenus s. str 6. 



Hind tarsi rather short, much shorter than tibiae, their first joint 

 not longer than the claw-joint. Abdominal first three free dor- 

 sal joints at base most often with 1-4 short or very short long- 

 itudinal carinae, occasionally without carinae: 2. Subgenus 

 Nestus Fey 22. 



4. Hind tarsi rather broad ana short, only about half as long as the 



tibiae, their first joint hardly longer than the claw-joint: 



3. Subgenus Hemistenus Rey 42. 



Hind tarsi rather slender, distinctly more than half as long as the 



tibiae, their first joint much longer than the claw-joint: 



4. Subgenus ",e so stenus Fey 50. 



5. Hind tarsal fourth joint entire or only very feebly bilobed, and 



not or scarcely broader than the third: 5. Subgenus Tesnus Fey.:55. 

 Hind tarsal fourth joint very deeply cleft and bilobed, distinctly 



broader than the third: 6. Subgenus Hypostenus Rey 59. 



1. Subgenus Stenus s. str. 



6. Elytra each with a small, round reddish-yellow spot behind middle. :7. 



-7- 



