Dyschirius.^ adephaga. 23 



impressions ; legs stouter than in the other species ; external teeth of 

 anterior tibiae small or entirely wanting. L. 4|-5|- mm. 



Very local ; maritime ; Norfolk and Lincolnshire coasts ; Wallasey, near Liverpool ; 

 Deal ; Sliorehani ; Thames and Humher (Stephens). Scotland, very local, Moray 

 and Sohvay. It is the largest of our indigenous Dyschirii. 



D. extensus, Putz. (elongatidus, Daws.). Shining bronze, mouth 

 parts, antennce, and legs red; thorax half as long again as broad, as broad 

 as elytra, with a fine but distinct central furrow ; elytra very elongate, 

 cylindrical, parallel-sided, with strong punctured striae ; the anterior tibiae 

 present hardly any trace of teeth, or are quite simple. This species is 

 easily distinguished from all the others by its narrow and quite cylindri- 

 cal form, elongate elytra, and very long thorax. L. 3| mm. 



Very local and rare ; maritime ; Deal ; Shoreham ; Lancing ; near Folkestone ; 

 found by Mr. A. C. Ilorner in company with Bledius tricornis, not molesting the 

 Bledius, but devouring ants which abounded in the vicinity. 



D. ang-ustatus, Putz. {Jejunus, Daws.). Head and thorax brassy 

 black, elytra brassy ; head rugose ; antennae red, ligliter at base ; thorax 

 rather long, hardly narrower in front than behind, where it is widest, 

 with sides slightly rounded, central furrow distinct, but rather fine, 

 disc moderately strongly striated ; elytra elongate, with well-marked 

 shouklors, with sides somewhat parallel, striae distinct and jilainly punc- 

 tured, feebler towards apex ; legs red ; anterior tibiae armed externally with 

 two distinct strong obtuse teeth, the lower one largest. L. 2^-3 mm. 



Very local and rare ; banks of the Irthing, Northumberland (Bold) ; Hayling 

 Island (E. Saunders) . Easily distinguished by its narrow cylindrical form, rugose head, 

 and the external denticulatiou of the anterior tibiae. 



D. salinus, Schaum. Dark bronze, sometimes bluish or greenish ; 

 palpi, and antennae except base pitchy ; thorax short hardly longer than 

 broad, broadest behind the middle, somewhat globose, with distinct 

 central furrow ; elytra broader than the thorax, somewhat cylindrical, 

 rather flat, with strong striae which are coarsely and deeply punctured 

 towards base, but more feebly towards apex and at sides ; legs pitchy or 

 pitchy red ; anterior tibiae armed with two teeth, the one nearest the 

 apex being very large and distinct. L. 3|^ mm. 



Maritime; salt marshes and banks of ditches near the sea; also banks of tidal 

 rivers ; widely distributed and very abundant where it occurs. Scotland local, mari- 

 time. Forth, Solway. Ireland, near Dublin. This species is easily distinguished 

 from D. polifus, which is its nearest ally, by its shorter thorax, more j)arallel elytra, 

 very distinct punctuation, and the larger teeth on the external side of the anterior 

 tibiae. 



D. eeneus, Dcj. !Much smaller than the preceding, whicli in some 

 point.s it resembles ; the thorax, however, is more rounded tlian in 

 D. fta/inus, and the elytra are oblong ovate, and ratlier strongly rounded at 

 tlie sides ; the striae are strong and coarsely inincturt'd tnwards base, tiner 

 and more fi'cbly punctured behind middle, and the marginal stria ceases 



