Tue PsELAPHIDA OF NortTH AMERICA. 269 
22 Pronotum impunctate. 
Abdominal carine long, color ferruginous, ¢ last ventral concave, 
with a median longitudinal elevation. Length, 1.5 mm. 
Illinois. - - - - - - - - radians, 289 
Abdominal carine short, elytra punctured, color piceous, antennz 
and legs yellowish-red. Length, 1.2 mm. Massachusetts. 
diver gens. 288 
Abdominal carine somewhat farther apart, not very short, median 
fovea of pronotum very small, occiput slightly impressed in 
the middle. Color ferruginous. Length, 1.3mm. Florida, 
South Carolina near the coast. - - - atlantica. 289 
12 Pubescent pad at the base between the abdominal carine transverse, not 
broader than one-fifth of the abdominal width. 
31 Pubescence very long, pronotum and elytra longitudinally very convex, 
nearly gibbous, median fovea very small. 
Prothorax not punctured, abdominal carine very long, parallel, 
slightly divergent at the end and fully one-fifth of the abdom- 
inal width apart. Length, 1.33 mm. Louisiana, IIlinois, 
Towa. - - - - . 
= - - gracilis. 299 
Varieties of this species from Louisiana, with traces of punctures 
on the pronotum, are called gvracilicornis, Casey. Others from 
Iowa, with shorter carinz, constitute the typical gracilis. 
3” Pubescence short, pronotum and elytra normal, not so convex, 
41 Pronotum decidedly punctate. 
Head and pronotum with closely placed, large, deep punctures, 
abdominal carine including one-fifth of the segmental width. 
Color black, elytra piceous, legs yellow. Length, 1.0 mm. 
New York, Long Island. - - - - - scabra. 29% 
Head punctulate, pronotum polished, with deep, evenly-distrib- 
uted, abundant punctures; abdominal carinz long, parallel, 
slightly divergent posteriorly, including one-fifth of the 
abdominal width. Length, 1.5 mm. Illinois, Iowa. 
cribricollis. 29 
(Varies slightly in the strength of puncture). ° 
4” Head and pronotum impunctate, or with a few irregular, minute punc- 
tures. Abdominal carine divergent from the base onward. 
Pale ferruginous or lighter, abdominal carine including one-sixth 
of the abdominal width. Length,o.9 mm. New York, Vir- 
ginia. - - - - - - - : congener. 292 
Piceous-black or dark-brown, with red or darker elytra, legs and 
antenne yellowish-red or brown. Abdominal carinz includ- 
ing from one-sixth to one-fifth of the segmental width, 
strongly divergent, disk of pronotum and elytra with a few 
minute, scattered punctures, or impunctate. Pubescence 
short, suberect. Length, 1.2-1.4 mm. Atlantic region, 
Illinois, Kansas. - - - - - - rubicunda. B33 
