456 Coleopterological Notices, V. 



tuberosities. Tlie fiftii segment is deeply emarginate at its ante- 

 rior edge, the emargination broadly parabolic, one-fifth as wide as 

 the segment and extending to apical third of its length, the emar- 

 gination bearing two or three short porrect and anteriorly project- 

 ing setae. Sixth segment with two deep discal fovese, distant by 

 one-third the width and each siibcarinate along its anterior edge ; 

 pygidium tumid, rhomboidal, finely carinate and indistinctly punc- 

 tate. In some of ray previous descriptions of the species of Euplec- 

 tus I seem to have designated the true fourth ventral as the third. 



In the male of linearis, to which this species is allied, the fourth 

 ventral has two large transverse and much more distant tubercles, 

 and the anterior emargination of the fifth is much smaller. 



E. iowensis n. sp. — Linear, parallel, rather depressed, dark rufo-ferru- 

 ginous and polished throughout ; pubescence fine, short, subappressed, not 

 very abundant ; head coarsely, sparsely punctured above, more densely and 

 deeply beneath, the pronotum finely and sparsely punctulate, the elytra and 

 abdomen subioipunctate. Head large, wider than the prothorax, but slightly 

 wider than long ; eyes small, slightly prominent, the tempora behind them 

 largely developed, straight, subparallel and longer than the eye, the basal 

 angles nearly right and slightly rounded ; fovese small, feeble, distant by 

 one-third of the interocular width, the connecting sulcus becoming broadly 

 expanded and deep behind the frontal margin ; antennal tubercles small, 

 prominent, each with a deep nude fovea ; antennae not quite as long as the 

 head and prothorax, normal ; under surface without erect setae. Prothorax 

 slightly wider than long, widest near apical third where the sides are strongly 

 rounded, thence convergent and broadly, just visibly sinuate to the base; 

 disk with a large transverse median pit at basal third and two lateral fovea 

 not connected, also with an oval discal fovea feebly connected with the sub- 

 basal pit. Elytra one-half longer and two-fifths wider than the prothorax, a 

 little wider than the head, the discal stria extending to the middle. Length 

 1.2 mm. ; width 0.3 mm. 



Iowa. 



The male sexual characters are complex ; the fourth ventral is 

 feebly but abruptly emarginate in middle third, the bottom of the 

 emargination broadly arcuate, with the apex of the lobe projecting 

 as far as the sides and bearing two approximate porrect tufts of 

 everted setae ; fifth transversely excavated anteriorly to receive the 

 tufts ; sixth transversely impressed and receiving the large rhom- 

 boidal subirapunctate and feebly carinate pygidium. 



This species is allied to confluens, but differs in its smaller size, 

 narrower and more depressed form and longer tempora. The 

 appendage of the tarsal claw is distinct but very small. 



