THE CANADIAN ENTOMOLOGIST. DS 
joint securiform ; mentum obtriangular ; antennae filiform, eleven-jointed ;. 
scape short, incrassated ; pedicel short, incrassated at the apex ; joints 
3—8 obconical, nearly twice the length of the pedicel ; last joint cylin- 
drical, downy, as long as the five antecedent ones taken together. 
Body long and slender; head triangular; eyes kidney-shaped; pro- 
thorax cylindrical, not wider than the head ; scutellum rounded ; elytra 
wider than the thorax, linear ; legs slender ; tarsi very long. 
[239.] 324. ARTHROMACRA DONACIOIDES A7rdy.—Length of body 
5 lines. Taken in Canada, near Lake St. Clair, by Dr. Bigsby.  Speci- 
mens also from Massachusetts. 
Body black-bronzed with a greenish tint, glossy, with the whole upper 
surface thickly aud irregularly punctured ; underneath, except the sides. 
of the trunk, impunctured. Antennae much longer than the head and 
prothorax, scape and pedicel dusky, 3—8 joints tawny-yellow : last joint 
black, downy ; prothorax nearly cylindrical; elytra wider than the pro- 
thorax, obtuse at the apex ; thighs a little incrassated ; apex of the cubit 
and tarsi tawny-yellow ; two last joints of the latter dusky. 
This singular insect, at first sight, looks very like a Donacia, a 
resemblance merely given by its colour. 
[Belongs to Statyra Latr.; previously described as Zagria aenea by 
Say (Am. Ent.i, 191) ; not uncommon in Canada. | 
FAMILY CISTELIDÆ. 
325. CISTELA ERYTHROPA K7rby.—Length of body 5 lines. Taken 
in Canada by Dr. Bigsby. 
Body elliptical, gloss obscured, especially on the elytra, by very short 
decumbent hairs. Head longitudinally and slightly impressed between 
the eyes; antennae longer than the prothorax, reddish brown, with the 
three first joints rufous: prothorax transverse, anteriorly not wider than 
the head, posteriorly obsoletely trilobed, and nearly as wide as the elytra ; 
lateral angles acute ; elytra slightly furrowed ; furrows scarcely punctured ; 
legs pale rufous ; posterior tarsi long, embrowned. 
