Horn. |} 586 [April 19, 
nearly as long as the second and third together. Abdomen with first seg- 
ment as long asthe next three together, joints two to five gradually shorter. 
Thorax and elytra costate, the former with a deep, transverse impression 
posteriorly. 
This genus was described by Mr. Pascoe in the Journal of 
Entomology I, p. 36, for certain East Indian species allied 
to Bothrideres, to which must be added our B. exaratus. 
Closely allied to this genus is Hmmagleus Fairm., which 
differs in the presence of a distinct groove on the under side 
of the thorax indicating the suture between the pronotum, 
and the prosternal side pieces, and also in the structure of 
the antenne, and sculpture of the surface. Both genera have 
the side of the front incised at the end of the frontal suture 
over the insertion of the antenne, and there are distinct 
coxal lines on the first abdominai segment as in several of 
the genera of Monotomide. 
M. exaratus Mels. (Bothrideres) Proc. Acad. II, p. 111; geminatus 
Hald. Proc. Acad. I, p. 104. 
Form oblong, black, opaque. Head coarsely and moderately densely 
punctured. Thorax broader than long, apex emarginate, angles slightly 
prominent in front, base feebly arcuate, sides gradually arcuate and slightly 
narrowed to base, disc feebly convex, on each side three carin, the outer 
entire, the inner extending two-thirds slightly sinuate and converging 
toward the middle of the apical margin; posteriorly, at basal third is a 
deep, transverse impression, from which less deep impressions proceed to 
the hind angles and toward the scutellum ; in front of the deep impression 
are two oval tubercles not elevated above the surface of the disc, sur- 
rounded by a deep groove; intervals moderately, coarsely punctured. 
Elytra wider than the thorax, elongate oval, humeri oblique, each elytron 
with four cost, and margin acutely elevated, and a distinct sutural stria, 
intervals obsoletely punctulate. Prothorax coarsely punctured beneath, 
body less coarsely. Abdomen sparsely and rather finely punctate, first seg- 
ment with two parallel coxal lines nearly attaining the posterior margin, 
the first three segments in addition a fine sub-marginal line at the sides. 
Length .16—.26 inch ; 4-6.5 mm. 
This insect occurs especially in the Southern States. 
BOTHRIDERES Erichs. 
Antenne eleven-jointed, last two forming an oval club, received in re- 
pose in oblique antennal grooves, insertion exposed by an incision of the 
sides of the front. Head prominent, horizontal, eyes oval, prominent, 
coarsely granulated. 'Trochanters of anterior legs distinct, those of middle 
and posterior connate, with the femora without suture. Thorax more or 
