288 BKACHELYTRA — STENIDAE. 



than in Stcmis, with hist joint double as long. Antennae 

 inserted at inner margin of eyes, which are larger. 



Dianous, Leach. 



b, Paraglossae free. 



Labrum three times as broad as long, margin entire ; 

 maxillary palpi slender, second joint half as long again as 

 first, third joint about one-third longer than second, gradu- 

 ally thickened toward apex ; fourth joint extremely small ; 

 ligula bilobed, small ; labial palpi with first joint long and 

 narrow, second shorter and thicker, third very small ; men- 

 turn with middle of anterior margin produced. Antennae 

 inserted at inner margin of eyes, which are large. 



Stenus, Latr. 



Mvaesthetiis, 



A. Thorax w^ith two fine, straight, longitudinal furrows 

 behind middle of disc. 



a. Punctuation extremely close. 



Pitchy, rather dull ; head, antennae, and legs red. L. 

 I — 1 1. Common. K scaler, Gr. 



h. Punctuation close. 



Keddish-pitchy, slightly shiny ; head, antennae and legs 

 red. L. f 1. Piather common. E. lacviu!iculus,Mix\\\\ 



B. Thorax with two deep, slightly curved, longitudinal 

 furrows behind middle of disc. 



Pitch-brown, slightly shiny ; head, antennae, and legs 

 red; apical margin of abdominal segments reddish. Punctua- 

 tion extremely close, fine. L. \ 1. Ptather common. 



E. ruficapilliis, Lac. 



Dianous, 



Blackish-blue, moderately shiny, with fine whitish 

 pubescence ; elytra with a round, red spot behind middle, 

 half as long again as thorax. L. 2| 1. Ptather common. 



E. coerulescens, Gyll. 



jStenus. 



A. Fourth tarsal joint simple or bifid, not broader than 

 third ioint. 



