188 Trans. Acad. Sci. of St. Louis. 
American species before me being identifiable by the fol- 
lowing characters : — 
Addomen uniform in coloration and CONCOIOLOUS..ce.esececcccccescessee J 
Abdomen pale, with the tip bDlack....sscecsscerceeccceccceccccccccesrsce 6 
2— Body dark in color, the prothorax more or less distinctly norrower than 
the elytra, the latter fully as long as wide or somewhat longer....... 3 
Body pale red-brown in color throughout, the head a little darker, the pro- 
thorax large, fully as wide as the elytra, the latter not as long as 
WING. wacccrcosnessedee See endsehod shh ebibdnhicn s Vad ub eas eekiuweis ee yniee 
3 — Prothorax pale, dull rufous in color; body more slender, black, the legs 
and antennae pale; dull in lustre throughout from the extremely minute, 
close-set punctules; head as long as wide, about three-fourths as wide 
as the prothorax, the sides behind the well developed eyes parallel and 
feebly arcuate, the basal angles broadly rounded; prothorax fully as 
long as wide, parallel and feebly arcuate at the sides, the angles 
broadly rounded; elytra about as long as wide, distinctly wider and 
longer than the prothorax. Length 4.0 mm.; width0.65mm. North 
Carolina (Asheville), New Jersey, New York and Rhode Island. 
rufieolle n. sp. 
Prothorax dark and concolorous; anterior tarsi of the male very strongly 
UALOG v5 vn ce bu hin hdd baa be Hh oeine an Mee Cabby RUG hob Wine view aes) ou Noe 
4— Body parallel, black, dull in lustre, the prothorax never more than 
faintly piceous, black in maturity; elytra moderate, quadrate, only very 
slightly wider and about a fourth longer than the prothorax; head fully 
four-fifths as wide as the prothorax, rather wider at base than at the 
moderately developed eyes; prothorax relatively larger, but little wider 
than long, parallel. Length3.3 mm.; width0.7mm. Massachusetts. 
thoracicum n. sp. 
Body less parallel, the elytra relatively larger; black and dull throughout, 
the legs dark piceous; head very small, three-fourths as wide as the 
prothorax, nearly as in rujicolle; prothorax slightly wider than long, 
parallel and feebly arcuate at the sides, the angles rounded; elytra 
quadrate, fully a fourth wider and two-fifths longer than the prothorax. 
Length 3.75 mm.; width 0.75 mm. Nevada (Reno), California (Lake 
Tahoe) and Oregon (Albany) ..++ sseecscceeseeesse+eseCapitulum Csy. 
5 — Body, legs and antennae pale testaceous, the head picsous; dull in lustre 
throughout, rather stout and parallel in form; head unusually large, 
as wide as long, of the usual form, about four-fifths as wide as the pro- 
thorax, the latter very large, just visibly wider than long, fully as wide 
as the elytra, parallel, the sides feebly arcuate, the angles broadly 
rounded; elytra depressed, a little shorter than wide, but very slightly 
longer than the prothorax. Male not known but probably still stouter. 
Length 3.2 mm.; width 0.65 mm. Rhode Island (Boston Neck). 
clarescens 2. sp. 
6 — Moderately stout, parallel, alutaceous, the elytra dull; pale testaceous, 
the head, elytra and last two ventral segments black; legs and antennae 
pale, the latter unusually long, half as long as the body; head rather 
well developed, five-sixths as wide as the prothorax, otherwise as in 
AOE alg ee 
