142 H. C. FALL. 



5. Hind angles of prothorax undefined, tbe sides broadly rounding into the base. 



21. gentilis. 

 Hind angles of protborax distinct and a little prominent; sides nearly straight 

 and convergent from the base, the margin ill defined. 



22. trapezoideus. 



1. E. mollis Linn. — Rather robust, brown, not very strongly shining, clothed 

 with short, fine, recumbent, cinereous or fulvo-cinereous hair. Head granulate- 

 punctate, eyes separated on the front by about twice their vertical diameter, only 

 slightly larger in tbe male. Antenna half the length of the body ( 9 ) or a little 

 longer ( % ), all the joints longer than wide; joints 2-4 nearly equal and slightly 

 narrower than those following; 5 and 7 longer than 4, 6 and 8; 9 filiform and a 

 little longer than 7 and 8 united ( % ), or a little wider apically and barely equal 

 to 7 and 8(9); 10 a »d 11 each subequal to 9, the three united slightly longer 

 than all the preceding {%), or barely as long (9 )• Prothorax as wide as the 

 elytra, strongly transverse; sides rather strongly arcuate and broadly margined, 

 front angles rounded, hind angles not defined; surface quite closely granulate- 

 punctate, disk a little uneven but without distinct transverse impression. Elytra 

 parallel, about twice as long as wide, punctuation nearly as dense but slightly 

 finer than that of the prothorax, scarcely granulate, except near the base. Meta- 

 sternum at sides closely, at middle more sparsely punctate, the episterua densely 

 so; abdomen rather finely and sparsely punctured ; presternum short before the 

 coxae, being about one-fourth the coxal length; basal joint of tarsi subequal in 

 length to the next two together. Length 4-5i mm. 



This common European species has been introduced into the 

 Atlantic States where it occurs in the coast region from Maine to 

 Virginia. I have seen no specimens from west of the Alleghanies, 

 and do not know how far into the interior the species has penetrated. 

 In the Michigan list Hubbard and Schwarz record this species from 

 Marquette, but this is an error of identification, the form found 

 being the one described in the present paper as cpicus. Hamilton 

 speaks of it in his List of the Coleoptera common to Europe and 

 North America as being found near Pittsburg, but does not give it 

 in his Southwestern Pennsylvania List published six years later. 

 Drury records it in his Cincinnati List, but this may also be in 

 error. It is not rare in eastern New England on or about pine 

 trees. 



2. E. social is n. sp. — Similar in form and color to mollis and punctulatus, but 

 more shining than either, because of the finer, sparser, elytral punctuation which 

 is not at all granulate, or only at the extreme base. Head distinctly granulate ; 

 eyes large, the width of the front between them not more than one and three- 

 fourths times their vertical diameter. Antennae more slender than in mollis or 

 punctulatus, joints 6-8 each fully two and one-half times as long as wide, the fifth 

 evidently, the seventh slightly longer as usual ; ninth a little longer than seventh 

 and eighth united and fully five times as long as wide. Prothorax granulate- 



