62 . BULLETIN BROOKLYN. ENTOM, SOC. VOL. VII. August 1884. ] 
ASEMUM. 
The four genera first named above form the group Asem of which 
Asemum is the typical form. The species are moderately stout in form 
with the antennz never very long. The head and mandibles are small 
and inconspicuous. ‘The thorax is rounded or angulated at the sides. 
The elytra are nearly parallel and rounded at the tip. Asemum is dis- 
tinguished from. its companions as indicated above by the eyes and the 
finely pubescent antennz. 
: The ee may be separated by the following 
SYNOPTIC TABLE OF ASEMUM. 
Elytra strongly costate; thorax distinctly angulated at the sides near base. 
Surface opaken ey see OG 8 sae ied oc Ree ettee ee oldie na ae eae ee atrum. 
Elytra barely costate; thorax rounded at sides. 
Surfaceyopakesismallers S004... 3 .. a aneieeses | -lotiel ey see oe ee a eee eS ETT 
Sunfatceylustrouss larger 2 i528 2%.,'6 cs) saunter ere eels atd Se ee eeke cee nitidum. 
A. atrum, Esch. Bull. Mosc. 1830, IT, p. 66. 
_ This species is black densely and ee el pe seenl: elytra ic very 
neue Abteloond. cost, sometimes irregularly interrupted; thorax 
variously sculptured and. obtusely angulated at sides, deeply punctured; 
antenne © about 3 the length of the body, © nearly 3; in both sexes 
serrate. Length 10—17 mm. =.40—.68 inches. Habitat, Western 
See 7A alan a a 
A. moestum, .Hald,.Trans. Am, Phil. X, 1847, p. 35; Lec. J.A.P. ser. 2, II, 
p- 35; Dej. Cat. 3d ed. p. 354; striatum { Kirby, Fn. Bor. Am. IV, 1837, p. 171; 
fuscum,. Hald, lc. p. 36; juvencum, Hald, l.c. p. 36; substriatum, Hald, l.c. p. 36. - 
‘This species is also black and densely pubescent; elytra varying 
from brown to black in color and somewhat in the striations, which are 
sometimes barely visible and sometimes quite distinct. The name sad- 
striatum has been applied to the form having the more distinct striz and 
juvencum to thesmooth form. It seems unnecessary to continue them. 
The thorax in all the forms is-rounded at the sides, punctured at middle 
and variously not deeply sculptured, Antenne asin a/rum, 11-jointed 
and very short. Length 12—15 mm. =.48—.60 inches. Habitat, 
Lake Superior to Florida and eastward, | 
A. nitidum, Lec. New species II, S.M.C. 1873, p. 169. 
This species is larger, more robust than above and is easily known 
by the less densely punctured thorax as well as the characters of the table. 
The coloris black shining, fusco pubescent with short hair; thorax rounded 
