38 GEO. H. HORN, M. D. 



erately closely placed punctures substriately arranged, the intervals with finer 

 punctures ; body beneath rather coarsely and closely punctate ; prosternuni nar- 

 row between the coxae, prolonged and acute ; metasternal episterna narrow ; hind 

 coxse much dilated internally; fourth tarsal joint dilated and slightly lobed be- 

 neath, claws slightly dilated at base. Length .16 inch ; 4 mm. 



Ill its form this species resembles Mier. triangular^, but the color 

 is pale ferruuinous. 



Occurs in Canada, Illinois and Tennessee, but seems very rare. 



X\I.OBIl S Latr. 



Form elongate, cylindrical ; antenna? a little shorter than half the body, joints 

 four to ten quadrate, equal, joint eleven narrower at apex, a little shorter than 

 the two preceding together ; head deeply inserted, eyes small, round and feebly 

 convex ; clypeus trisinuate along the apical margin, base narrow, less than half 

 the distance to the eyes; thorax narrower only at apical third, lateral margin 

 line entire ; scutellum oval ; prosternal sutures straight, but divergent, under 

 side of prothorax without trace of antennal grooves ; metasternal episterna ])ar- 

 allel, the epimera concealed ; hind coxal plates neai-ly parallel, the posterior 

 margin slightly sinuous ; legs rather short, tarsi compressed, gradually attenuate 

 toward the axiex, the first joint of the posterior pair as long as the next two, the 

 fourth obliquely truncate and slightly excavate above so as to appear lobed be- 

 neath, claws slightly broader at base. 



One species is known in our fauna. 



X. eyllndrirorinis Horn. — Elongate, cylindrical, narrower at apical third ; 

 color variable ; antenuie ferruginous, fourth joint longer than third or fifth, third 

 longer than that portion of the second seen from the front ; head coarsely, closely 

 and deeply punctured, fourth slightly impressed ; thorax a little wider than long, 

 sides parallel, arcuately narrowing at apical third, hind angles acute, very slightly 

 divergent, carinate, disc convex, coarsely, deeply and rather clo.sely punctate ; 

 elytra very indistinctly striate, with coarse, deep punctures closely placed, the 

 intervals very narrow, with a few finer punctures ; prothorax beneath with very 

 large punctures, not closely placed ; metasternum less coarsely but more densely 

 punctured, abdominal punctures still less coarse, but more sparsely placed ; legs 

 ferruginous. Length .18 - .26 inch ; 4.5-5 mm. 



The two specimens before me vary in color in the following man- 

 ner : " Head piceous, anterior margin ferruginous ; thorax piceous, 

 apical and basal margins rather broadly, the lateral margin narrowly 

 red ; elytra piceous, entire limb, base and suture paler ; body beneath 

 browuiish red, the metasternum piceous (typical specimen). 



" Above and beneath almost entirely piceous, the base, hpex and 

 sides of thorax narrowly paler." 



This species resembles the two European forms, but is more robust 

 than either, with the thorax more densely and coarsely pujictate. 



Occurs in California and Nevada. 



