27 
of the front segments, dark brown ; last segment black, with a semi¬ 
circular notch at the tip. Resides in rotten wood, as logs, stumps, etc. 
Orthostethus infuseatus —Germ. 
Length from one inch to an inch and a quarter, narrowing and ta¬ 
pering behind to a point; each posterior angle of the thorax extend¬ 
ing backward in a sharp spine ; elytra not striated. Uniform dark 
brown covered with minute, closely pressed, yellow hairs ; underside 
black or very dark brown. 
Adelocera impressicollis —Say. 
A small species not exceeding three-eighths of an inch in length ; 
width about one-fourth the length ; hind angles of the thorax acute ; 
but not extending backward in the form of a spine ; elytra finely stri¬ 
ated, the raised intermediate spaces punctured. Color almost uniform 
reddish-brown, head and thorax slightly paler than the elytra ; sparse¬ 
ly covered with golden hairs. 
Adelocera discoidea —Web. 
Length about the same as the preceding species, but a shade nar¬ 
rower; thorax near the hind margin slightly narrowed, posterior an¬ 
gles scarcely acute. Black, with a broad golden^ border along the 
sides and front of the thorax ; elytra uniform dull black, striae min¬ 
ute and indistinct, sutural margin raised so as to form a ridge when 
closed. 
Cryptohypnus abbreviatus —Say. 
This is a small species not exceeding a quarter of an inch in length ; 
width about one-third the length ; thorax with very shallow, scarcely 
perceptible, punctures, and a median, impressed, longitudinal line. 
Elytra striate, the grooves very slender and not, or very indistinctly, 
punctured, interspaces flat and smooth ; tapering bu slightly on the 
basal half, rounded at the tip. Head and thorax black ; rest brown. 
Elater linteus —Say. 
Length varies from five-sixteenths to slightly more than three- 
eighths of an inch ; width about one-fourth tne length , the posterior 
tapering more directly to a point than the two preceding species. 
Elytra very distinctly striate, punctured in the stria? but not in the 
intermediate spaces ; without hairs or nearly so; posterior angles of 
the thorax extending back ward in the form ot sharp spines. Head 
and thorax deep black ; elytra ochre-yellow, with the sutures and im¬ 
mediate tips black. 
Elater sanguinipennis —Say. 
Similar to the preceding in size, form and carvings, except that the 
thoracic spines are slightly shorter, and the stria? of the elytra are 
finer; interstitial lines punctured. Body smooth, without hairs. 
