82 Memoirs on the Coleoptera 



finer, grooved and impunctate posteriad; scutellar stria as in 

 qnadrulum, the ninth close to the edge; intervals convex, becoming 

 flat behind, especially in the female; anterior male tarsi very feebly 

 dilated. Length (c^ 9) 6.8-7.0 mm.; width 2.4-2.75 mm. New- 

 York, Pennsylvania and District of Columbia ferreum Hald. 



Body nearly as in ferreum but rather more elongate, similar in color and 

 lustre; head broader, less elongate and with slightly more prominent 

 eyes, nearly four-fifths as wide as the prothorax; antennae very 

 slender, piceous, scarcely paler basally, much longer than in ferreum, 

 as shown especially by the individual joints; prothorax only a fifth 

 or sixth wider than long, similar in outline, except that the oblique 

 sides basally are merely straight, the angles being broadly rounded; 

 surface convex- as in ferreum, but with the basal punctures much 

 more close-set throughout the width; stria similar, the transverse 

 impressions both obsolete, the foveae similarly large, rounded and 

 deep; scutellum triangular, a little smaller; elytra one-half longer 

 than wide, scarcely more than one-half wider than the prothorax, 

 gradually rounded behind; striae very coarse, deep and sulciform 

 almost throughout the length, though less coarse and smoother 

 posteriad, the punctures very coarse and conspicuous; intervals 

 convex, feebly so apically; scutellar stria similar; met-episterna 

 about twice as long as wide; anterior male tarsi rather long, evi- 

 dently though feebly dilated. Length (cf 9) 6.5-7.3 num.; width 

 2.4-2.8 mm. Northern Illinois (Highland Park); also Kansas, — ■ 

 Knaus. Rather abundant; the male is rarer than the female. 



solidulum n. sp. 



These species constitute a rather peculiar type in the Agonum 

 series; they are rather closely allied or hold well to a common 

 facies, but I believe them to be specifically distinct as described 

 above. We have here another instance of a common stock forming 

 distinct species in the course of time to the east and west of the 

 Appalachian system, as shown before in Anchomenus extensicollis 

 and elongatulus and Circinalia punctiformis and rufipes. 



Group II — nutans 

 Subgenus Micragonum in sp. 

 In the more elongate body and finer sculpture, this group is 

 always distinguishable easily from the preceding, and by the 

 shining elytra, finely reflexed lateral margins and uniform distal 

 coloration of the antennae, it may be known at once from the third 

 group. The species, which are more essentially southern in range, 

 are somewhat numerous, those at hand being the following: 



Elytra with three dorsal punctures 2 



Elytra with more than three punctures 3 



