ROLAND HAYWARD. 37 



been seen from Canada, Maine, the White Mountains of New Hamp- 

 shire, Tyngsboro, Lowell and Boston, Massachusetts, INIichigan and 

 Lake Superior. 



Subgenus LEIOC^V'E.TIIS Zimm. 



Prothorax wider in front of base. Prosternurn margined at tip. 

 Apical spur of anterior tibifie simple. Males with the middle tibiae 

 not dentate on the inner side. Posterior tibiic not pul)escent on the 

 inner side in the males. 



This subgenus seems to lead from Cyrtonotus and Leironotvs 

 toward Bradytus. In our species the prosternum, although mar- 

 gined at tip, is less distinctly so than in Bradytus, Tria;n<t, Amaru 

 and Celia. The males of several exotic species have a punctured 

 area at the middle of the prosternum, but no trace thereof is to be 

 seen in our representative. 



Although the European species are faii-ly numerous, but one 

 occurs within the limits of our fauna. 



21. A. avida Say. — Form oblong, convex, elytiii slightly flattened on the 

 disk. Color dark piceous or nearly black, shining. Head as wide as tlie thorax 

 at apex; eyes moderately large, rather finely granulate; frontal grooves distinct, 

 not extending forward on to the epistonia ; antennse shorter than the head and 

 thorax, rufous; palpi rufous. Prothorax nearly twice as wide as long, subquad- 

 rate, widest in front of middle, as wide at base as apex, sparsely punctate at 

 apex, more densely so at base ; apex emarginate; transverse impressions feeble; 

 median Hue distinct, abbreviated at each end ; basal impressions linear, the inner 

 fovea distinct, the outer obsolete; base truncate; sides with the margin narrowly 

 but distinctly reflexed, arcuate, distinctly sinuate in front of the hind angles, 

 which are rectangular, moderately prominent and not carinate. Elytra scarcely 

 wider than the thorax, deeply striate; humeri rounded; stria; entire, punctate, 

 more feebly toward the apex, the scutellar stria moderately long, the eighth 

 with the row of ocellate punctures broadly interrupted at middle; intervals 

 convex. Body beneath black, shining; sides of prosternum sparsely punctate; 

 meso- and metasternal episterna, sides of metasternum and of the first two 

 ventral segments coarsely punctured; all the femora with two setigerous punc- 

 tures along the inner margin ; tarsi not grooved on the outer side. 



The males have the anterior tarsi rather narrowly dilated and 

 one anal .seta on each side, there being two in the females. 



A moderately common and well known species. In facies it 

 most nearly resembles .1. (Bradytus) exarata Dej., but is quite 

 readily recognizable by the absence of the outer fovea of tlie basal 

 impressions of the thorax, as well as by the subgeneric characters. 

 In well preserved males a few fine hairs are usually to be seen on 

 the inner side of the posterior tibiie, but they are not to be compared 



TRANS. AM. ENT. SOC. XXXIV. FEBRUARY. 190S. 



