18 Randalls New Species of 
tracted, almost at right angles with the margin, which is 
almost level or slightly recurved. 
Length about six twentieths of an inch. 
Nearly allied to the above, but sufficiently distinct, no 
less by its size, than by its single rows of punctures. 
96. NITIDULA TRUNCATA. 
N. — depresso; capite nigro; antennis piceis ; thorace nigro 
aut elytris fusco-testaceis, posticd abrupté truncatis, angulis 
eie indi nigris. 
Body very flat: head black: antenne piceous; club 
elongate, pyriform : thorax blackish or brownish: elytra 
brownish, sometimes testaceous, nearly quadrate, on ac- 
count of their being abruptly truncated behind throughout 
their whole width, leaving nearly one half the abdomen 
exposed ; posterior angles generally blackish: feet pice- 
ous. 
Length considerably less than one tenth of an inch. 
Occurred abundantly in the spring, upon the sap of 
prostrate trees of the sugar maple (Acer saccharinum). 
Probably referable to the genus Cercus, and seems 
to be closely allied to the Cercus niger of Say. 
27. NITIDULA AVARA. 
N. corpore sub-elongato, sub-depresso, duplo — huge lato, 
marginibus sub-parallelis, fusco-fulvo; margine thoracis curvato, an- 
gulis posticis sub-acutis ; elytris sub-planis, singulis ad pium rotun- 
datis, nigro-bimaculatis. 
Body somewhat elongated, rather depressed, margins 
somewhat parallel, and a little dilated; color entirely 
brownish yellow: club of the antenne rather stout: 
