288 MEMOIRS ON THE COLEOPTERA 



apical third; hind tarsi short though somewhat longer than in 

 testaceus. Length (cf 9 ) 2.4-3.0 mm.; width o. 8-1.1 mm. Rhode 

 Island and New York to North Carolina. Abundant. .Acupalpus 

 pauperculus Dej.; Ac. consimilis Dej.] pauperculus Dej. 



Form somewhat similar but with a slightly smaller head, elongate, sub- 

 parallel, shining, testaceous, the head black, each elytron with an 

 elongate blackish cloud; under surface of the hind body blackish; 

 legs pale; head two-thirds as wide as the prothorax; antennae fuscous, 

 paler basally, extending distinctly behind the thoracic base; pro- 

 thorax nearly as in indistinctus; two-fifths wider than long, the sides 

 strongly rounded anteriorly, very oblique and nearly straight basally; 

 surface as in the preceding, except that the anterior punctures are 

 very few in number, the latero-basal fewer and coarser; elytra similar 

 in form but only about a sixth wider than the prothorax and with 

 more impressed striae and more convex intervals. Length (cf) 3.0 

 mm.; width i.i mm. New Jersey (Atlantic City). [Acupalpus 

 humilis Dej.] humilis Dej. 



Form nearly as in pauperculus but larger, shining, subparallel, pale tes- 

 taceous in color throughout, the head black; legs pale; head two- 

 thirds as wide as the prothorax, the antennae slender as usual on the 

 thin side, but rather broad on the compressed side, fuscous, paler 

 basally, extending well behind the thoracic base; prothorax two-fifths 

 wider than long, widest near anterior third, the sides there rather 

 broadly rounded, converging and gradually less rounded basally, 

 the other characters as in indistinctus, except that the punctures 

 anteriorly and latero-basally are generally sparser; elytra one-half 

 longer than wide and a fifth wider than the prothorax, less obtuse 

 at apex than in some of the preceding and circularly rounded; striae 

 impressed, the scutellar generally distinct; intervals modeiately 

 convex; hind tarsi three-fifths as long as the tibiae. Length (c? 9 ) 

 3.0-3.5 mm.; width 1.0-1.2 mm. Long Island to Iowa and Texas 

 (Galveston). Abundant. [Trechus partiarius Say; ? Bradycellus 

 nigriceps Lee.] partiarius Say 



Form somewhat as in partiarius but very much smaller in size and with 

 relatively smaller antennae, shining, convex, pale testaceous in color, 

 the head and a long cloud on each elytron infumate; under surface 

 of the hind body blackish; the epipleura and legs very pale; head 

 smooth, three-fourths as wide as the prothorax, with prominent eyes, 

 the vertex without trace of median puncture in the type; antennae 

 relatively smaller than in any other species, fuscous, paler basally, 

 slender and barely as long as the head and prothorax, the latter 

 narrower and more narrowed basally than in testaceus or partiarius 

 but similar in general form and sculpture, about a third wider than 

 long, the arcuate base much narrower than the apex; elytra nearly 

 as in partiarius, the scutellar stria shorter, vestigial; hind tarsi very 

 short and slender, the fifth joint fully as long as the first two com- 

 bined as usual. Length ( 9 ) 2.4 mm.; width 0.78 mm. New Jersey 

 (Atlantic City) fusciceps n. sp. 



A specimen of the true partiarius, from the coast region of 



