STAPHYLINID^E 397 



species differing far too much among themselves to warrant their 

 inclusion under a single name, and I would therefore suggest the 

 following subdivisions, based upon North American material. 

 The only difficulty is in estimating the weight or value of these 

 groups and I must confess my inability to come to any decisive 

 conclusion regarding this at present. 



Tribe QUEDIINI 



Hypomera, or inflexed sides of the pronotum, horizontal 2 



Hypomera strongly inflexed 4 



2 Labrum entire; eyes moderate but prominent; sides of the head 

 throughout closely punctured; infra-ocular carina obsolete; antennae 

 long, slender and filiform, not incrassate; prothorax subquadrate, 

 the hind angles evident though rounded; scutellum impunctate; 

 elytra with but few punctures arranged in a subsutural and external 

 discal series, the flanks with numerous fine punctures; abdomen 

 evenly and rather closely, not very finely punctate; hind tarsi slender, 

 sparsely pubescent above. [Type Quediusferox Lee.] . . Hemiquedius 



Labrum bilobed; antennae not filiform; eyes moderate though prominent; 

 prothorax rounded at the sides and base; scutellum impunctate in 

 all known species 3 



3 Front not produced beyond the antennae; head with only four coarse 

 sublateral punctures, the nuchal constriction deep; elytra with only 

 a few small punctures arranged in about three series on each ; abdomen 

 uniformly though sparsely punctate; habits in general subcortical. 

 [Type Q. Icevigatus Gyll.] Quedionuchus 



Front produced medially beyond the line of the antennae; head with 

 numerous punctures laterally and two on the front discally, arranged 

 transversely somewhat as in Distichalius but more widely separated; 

 elytra uniformly but finely and sparsely, the abdomen irregularly, 

 punctate. [Type Q. puncticeps Horn] Paraquedius 



4 Antennae filiform; tarsi smooth above, slender; labrum entire but 

 short, with a median canaliculation; body stout, fusiform; head oval, 

 with large but scarcely prominent eyes and very few coarse punctures, 

 the front sometimes with two minute tubercles arranged transversely, 

 the nuchal constriction very feeble; prothorax continuously rounded 

 at the sides and base; scutellum smooth; elytra very smooth, having 

 only two discal series of small and very remotely separated punctures, 

 the inner subsutural, the flanks punctured; abdomen with strong and 

 peculiarly remote punctures; anterior coxae very asperately punc- 

 tured. [Type Q. vernix Lee.] Anaquedius 



Antennae not filiform, more or less incrassate distally; tarsi more or less 

 pubescent above 5 



5 Labrum entire; infra-ocular ridge very fine but entire; nuchal con- 

 striction fine and feeble 6 



Labrum bilobed 7 



6 Body of rather large size, parallel; head oval, with moderately large 



