Df.c.i8,4.| Liat, \: i;i.r 1 KNMiii.i.KR. Coi.EOPT. N. K. Amf.r. 183 



Elytra with third interspace bii)mict:ite or impunclate, not margined at base. 

 Anterior tibine not or scarcely dentate at the outer side. 

 Bronzed, head smooth, shining; legs rufous. 



.'\pjcal spur of front tibire very short ; epistoma truncate. 



Klyttal stria' coarsely punctured, obliterated behind, brevispinus. 

 Apical spur of front tibia; long. 



Elytral strine deep, entire, clypeus bisinuate, tridentate, 



sphiericollis. 

 Elytral stria: partly abbreviated at base. 



(Mypeus truncate, thorax ova^e transverse truncatus 



Clypeus truncate, thorax oval not transverse, erythrocerus. 

 Testaceous or rufous ; head rugose, opaque, elytra p-de, usually 

 with a dark spot. 

 Thorax not longer than wide. 



Angles of epistoma prominent .... sellatus. 

 Angles of epistoma less prominent ; boily smaller, 



and more slender .... pallipennis. 



Anterior tibiie dentate at the outer side ; Sth stria distinct at tip. 

 Elytral strine abbreviated in front ; black bron/ed, legs rufous. 

 Elytral slri;v not obliterated behind; very elongate; clypeus 



sharply bidentate filiformis. 



Elytral stria; obliterated behind. 



Thorax ovate ; clypeus trunctate .... sneus. 



Elytra with interspaces 3, 5 and 7 furnished with single rows of 

 setigerous punctures. 

 Tiiorax short, ovate ; elytral stria- faintly impressed, obliterated 



behind setOSUS. 



'I'horax globular and longer; elytral stria more coarsely punctureil, hispidus. 



D. nigripes Lee. — Black, shining, sub-elongate ; clyix-iis bi- 

 dentate ; thora.x oval, scarcely longer than wide, very slightly nar- 

 rowed in front ; elytra a little wider than the thorax, sides scarcely 

 rouiided, marginal stria shortened at the humeri, striiii punctured 

 before the middle, 2nd, 7th and Sth stria; deep at the apex ; inter- 

 spaces flattened, 3rd tripunctate ; base of antenn;e and palpi red- 

 dish. Length, .12 inch == 3 mm. 



Habitat, Canada, Lake Superior. 



D. seneolus Lee. — Black, shining, legs and antennx- also 

 black ; thorax sub-globose, not narrowed in front, sides slightly 

 rounded anteriorly ; elytra almost parallel, rounded at apex ; stria; 

 punctate, punctures obliterated externally, sutural stria distinct at 

 apex, the two others shorter and deep, the outer one longer, mar- 

 ginal stria bent at humeri ; third interspace tripunctate. Length. 

 .15 inch = 3.75 mm. 



