- . 
- {December 1882. BULLETIN BROOKLYN ENTOM. SOC. VOL. VY. 59 
LO: punctatus, Lec, Ann, and Mag. Nat. Hist. London 1869. p. 377. 
Differs from s/7a/us by the much larger and broader triangular excavation 
of the front; the thorax much more strongly punctured and especially by 
the elytral strize very fine, the outer ones obsolete, and the intervals per- 
fectly flat and coarsely punctured. Col., Wash. Terr.—13 mm. 
eoeriauusylecc. Prog.Ac. Phila. 185omps 65. ©. Head and thorax 
with large, but sparse punctures; elytral striz deep, at middle more dense- 
ly, at the sides less broadly punctured; the thorax is more convex and the 
elytra more deeply striate and much moré punctured than in prveus. 
Wash. Terr., Or., Cal. (Shoalwater Bay.)—16-—17 mm. 
13. piceus, Weber, Obs, Entom. p, 84, Badbz Casteln. Hist. Nat. II, 
174. t. 17, f 3-4. ‘Thisis the most common species of the present ge- 
mus and always found in great numbers. N. Y., Pa, Ohio, D.C.,— 
10-15 mm. 
The pupee of this species were found by Prof. Schaupp in large num- 
bers in an old beech-stump, in fact so plentiful were they that he fed his 
carabidous larvee with them——they are 14 inch in length, perfectly white, — 
stout, with free wings and closely appressed legs, abdominal segments 
strongly marked and the head folded downward upon the sternum. . 
The sexes are readily distinguished by the relative size of the mandi- 
bles, the form of which can be perfectly distinguished through the trans- 
parent membrane enveloping them. 
/ In the three species of this genus the antennze seem to be alike: 
> they differ from all the preceeding in being straight instead of geni- 
culate though the first joint is still nearly } as long as the entire an- 
tennze: like the foregoing they are 10 jointed, not counting the 
small base-like joint which fitted into the socket in the head gives 
a range of motion in every direction, but unlike them none of the 
12. joints are opaque or pubescent. ‘There are never more than 3 joints 
prolonged, and the prolongations are never slender; all three 
of them have the tip more or less excavated, and they are some- 
what securiform, the figure (12) shows the form peculiar to this 
genus. 
SINODENDRON, ellwig. 
(sino=to hurt, dendron=tree. ) 
13. rugosum, Mann. Bull. Mosc. 1843, H, 262; americanum, Beauv. 
inswaAre et Amp. 192, t: 1, D. £ 1-2) “Black, thorax rugose, variolose, 
