Coleopterous Insects of Maine. 31 
usually the largest; margin testaceous, broadest above, 
and bounded on the inner side by an impressed stria : 
underneath black, polished : thighs white, black in the 
middle: tibie and feet testaceous. 
Length two fifths, breadth one fourth of an inch. 
After death, the body in general loses its color, be- 
coming nearly of a pale testaceous, except the three 
black spots on the thorax, which are increased in dis- 
tinctness. This insect is so nearly allied to the C. uni- 
punctata of Say, that from an inspection of the mutilated 
remains of that species, in his cabinet, it would seem to 
be only a variety ; but the three black spots on the 
thorax of the present species, apparently a constant char- 
acter, may serve sufficiently to distingush it. 
Say's species is described with only one spot, from 
which circumstance it has derived its name. 
Many specimens of our species occurred in Farming- 
ton, near the margin of the Sandy River, on a species 
of Helianthus; a great many of these plants were al- 
most wholly deprived of leaves, by their ravages. 
49. GaLLERUCA Saricis. 
G. capite nigro, sub-rugoso, canaliculato ; labro testaceo ; thorace 
nigro, rugoso, canaliculato; elytris sub-fuscis, densé sdntiulatis 
aureo-sericeis, sub-sulcatis ; pedibus fuscis. 
Head black, somewhat rough, canaliculate: antenne 
fuscous, hairy; basal joint paler: labrum testaceous : 
thorax black, rugose, narrowly margined with fuscous, 
with a concavity on each side: elytra blackish, some- 
times paler toward the apex, somewhat pale golden se- 
Ticeous, with two indistinct, very broad, shallow sulci, 
besides the marginal one ; margin considerably dilated. 
Length hardly two twentieths of an inch. 
