1878. | 595 {LeConte. 
spaces flat, 3d with two dorsal punctures; color brown with metallic lus- 
tre, with large ill-defined testaceous markings arranged as in B. indistinc- 
tum, epipleure testaceous edged with black. Length 4.3 mm.; .17 inch. 
Marquette, Lake Superior. Smaller and less convex than 
the preceding, with the prothorax wider and not polished. 
This species resembles the Californian B. approximatum and 
indistinctum in form and markings, but differs by the sides 
of the prothorax more strongly sinuate towards the base, 
and by the head and prothorax being less shining, and of a 
brown-bronze, not green-bronze color. 
5. Hydroporus fuscatus Crofch. Oblong-oval, elongate, pointed 
behind, shining brown above, mottled with darker; antenne with the 
outer joints blackish. Prothorax slightly rounded on the sides finely and 
distinctly punctured, basal plica extending a short distance upon the ely- 
tra, which are more strongly and not densely punctured. Metasternum 
with a few scattered punctures, and three striz behind. Length 1.7 mm.; 
.065 inch. 
Detroit and Lake Superior. Allied to affinis, but the elytra 
are more strongly and sparsely punctured; the continuation 
of the stria upon the elytra is very short, and forms an angle 
with the thoracic stria. Among 14 specimens examined I 
find no sexual difference worthy of note, and I have redes- 
cribed this species in order to correct an error made by Mr. 
Crotch, who (Trans. Am. Ent. Soc. 1873, 391,) considered as 
the 2 a different species, in which the stria is not continued 
upon the elytra. 
6. Hydroporus laccophilinus. Ovate, depressed, pointed be- 
hind, brown, paler in front, darker behind; epistoma not margined, head 
finely punctulate ; prothorax (¥‘) rugose and finely punctured, narrower in 
front, sides oblique, finely margined. Elytra (<j) strongly punctured, 
shining, (2) opaque, finely sparsely punctulate. Metasternum channeled 
for the posterior half of its length ; sparsely punctured in front ; abdomen 
coarsely punctured in both sexes. Length 2.6 mm.; .10 inch. 
Detroit; rare. The form is exactly that of a Laccophilus 
in miniature. The head and prothorax of the ¥ are opaque 
and very finely and sparsely punctulate. 
7. Suphis semipunctatus. Elongate-oval, not pointed behind, 
moderately convex, yellow-brown, shining, smooth ; elytra darker, covered 
from the middle to the tip with scattered coarse punctures ; of which one 
series extends to the base half way between the margin and suture. Pros- 
