me 
Horn.] 500 [April 19, 
and rather irregularly punctured, intervals sub muricate, declivity granu- 
late. Body beneath sparsely punctate. Length .14-.16 inch ; 3.5-4 mm. 
This species differs from the preceding in its rougher sculpture, and 
denser punctuation, the declivity in the former species being punctured, in 
this granulate. 
Occurs in the Southern States ; also, in Michigan. 
D. pusillus Fab. (Sinodendron) Ent. Syst. Suppl, p. 156; Stephens 
Illust. Brit. Ent. III, p. 854; Duval Gen. Col. Eur. II], pl. 57, fig. 281. 
Cylindrical, brownish or castaneous, shining. Head very sparsely punc- 
tate. Thorax as broad as long, margin scarcely serrate, surface asperato- 
granulate in front, less roughly granulate posteriorly. Elytra with rows of 
coarse, deeply impressed, closely placed punctures. Body beneath moder- 
ately coarsely but sparsely punctate. Length .12 inch; 3 mm. 
This insect appears to be cosmopolite, having probably been distributed 
in articles of commerce. Numerous specimens were observed in the wheat 
at the Centennial Exposition. It probably occurs over our entire country, 
as I have specimens from Arizona. 
D. punctatus Say, (Apate) Journ. Acad. V, p. 258. 
Piceous, sparsely pubescent. Front sparsely punctured. Antenne with 
moderately long hairs in front, the second joint as slender as the third and 
moderately long. Thorax a little longer than wide, narrowed in front, 
margin very feebly serrate, disc in front with spiniform tubercles, poste- 
riorly indistinctly granulate, and more shining. Elytra densely and irregu- 
larly coarsely punctate, intervals not elevated, declivity feebly convex, 
suture slightly elevated, on each side a more prominent but small denti- 
form tubercle, at sides of apex acutely margined. Body beneath moder- 
ately densely punctate. Length .18 inch; 4.5 mm. 
This species is abundantly distinct in the structure of the antenni. 
Occurs from Pennsylvania westward. 
D. truncatus, n. sp. 
Rufo-piceous, moderately shining, surface sparsely clothed with very 
short hair. Front moderately, densely punctate. Thorax as wide as long, 
gradually arcuately narrowed from base to apex, margin very finely serrate, 
disc anteriorly, roughly granulate, posteriorly, feebly but densely muricate. 
Elytra with coarse, deep, closely placed punctures, arranged in moder- 
ately regular striz, except near the scutellum, intervals not elevated, de- 
clivity abrupt, flat, densely punctate, acutely margined. Body beneath 
opaque, obsoletely punctate. Length .14 inch; 3.5 mm. 
The marginal ridge of the declivity encloses an exact semi-circle, while 
the face of the declivity is nearly vertical to the axis of the body. 
Two mutilated specimens from California. 
D. brevis, n. sp. 
Cylindrical, robust, brownish, shining, sparsely hairy. Thorax as broad 
as long, slightly narrowed to the apex, base truncate, margin not serrate, 
disc anteriorly with short dentiform asperities arranged in four or five 
