250 Memoirs on the Coleoptera 



prothorax somewhat shorter than usual in this section, rather more 

 than one-half wider than long, the parallel and feebly arcuate sides 

 becoming broadly and rather deeply sinuate basally, the angles 

 sharp and prominent, the other characters as in quadrata; elytra a 

 fourth longer than wide, widest and with the sides more arcuate 

 near apical third, much more than twice as wide as the prothorax; 

 stri^ very fine, sometimes barely visible, the intervals flat; dorsal 

 punctures fine. Length 3.2 mm.; width 1.3 rnm. Lake Superior 

 (Bayfield, Wisconsin), — Wickham fnigalis n. sp. 



24 — Under surface and legs in great part pale 25 



Under surface and legs black or nearly so, the prosternum sometimes red 

 in cyanipennis 27 



25 — Thoracic sides with a short deep abrupt sinus before the basal 

 angles, the sides of the base oblique and rounded. Polished, the 

 head obscure green, the prothorax rufous, the elytra bright green; 

 under surface pale testaceous, the epipleura black; femora testa- 

 ceous, blackish at apex; tibiae more obscure, rufous, the tips and 

 the tarsi blackish; head four-fifths as wide as the prothorax, with 

 large and somewhat prominent eyes and short, strongly converging 

 tempora, the front finely, feebly punctulate and rugulose, smooth 

 medially; antennae slender, somewhat more than half as long as 

 the body, the first three joints testaceous, the remainder black; 

 prothorax two-thirds wider than long, the sides evenly, subcircularly 

 rounded to the basal sinus and rather widely reflexed; basal lobe 

 and impression well marked; surface finely, feebly and not closely 

 rugulose, the median stria fine, feebly impressed; elytra oblong, 

 feebly inflated behind, slightly over a third longer than wide, barely 

 twice as wide as the prothorax; striae feeble, composed of unim- 

 pressed series of small punctures; intervals flat, the two dorsal 

 punctures remotely separated and moderate; tarsi notably stout. 

 Length 5.5 mm.; width 2.6 mm. Indiana abrupta n. sp. 



Thoracic sides not sinuate at the basal angles, which however are minutely 

 prominent as a rule; prothorax much shorter and more transverse, 

 the base transverse at the sides 26 



26 — Coloration and lustre nearly as in the preceding; head but little 

 more than three-fourths as wide as the prothorax, the eyes promi- 

 nent, nearly as in abrupta, the front finely punctulate, smooth 

 medially; antennae similarly long, the first two joints pale testaceous, 

 the third not quite so pale, the remainder black; prothorax shorter, 

 very nearly twice as wide as long, the sides subevenly rounded and 

 well reflexed, straighter basally, gradually more widely reflexed 

 from apex to base; basal lobe strong, the sulcus deep, the surface 

 finely and more closely rugulose, the median stria very fine; elytra 

 narrower, two-fifths longer than wide, fully twice as wide as the 

 prothorax, rather rapidly arcuately narrowed apically; striae very 

 fine and feeble, less distinctly punctured than in the preceding, the 

 flat intervals less evidently micro-reticulate, the dorsal punctures 

 similar; tarsi more slender. Length 5.0-5.8 mm.; width 2.5 mm, 



Rhode Island (Boston Neck) to Indiana viridipennis Dej. 



A — Similar in almost every way to viridipennis but with the pro- 



