302 
XOKTH AMERICAN" GYRIXUS (COLEOPTERa) 
have lieen the color of the feet in the original specimens that 
Dejean catalogued under the name picipes, Aube in his de- 
scriiition specifically states that the feet are ferruginous. 
There are in the LeConte collection three authentic examples 
of opacus from Greenland, and these differ in no respect from 
our Labrador ones. Specimens from the interior of the conti- 
nent (Northern Ontario, iNIanitoba, Alberta) are, as a rule, 
distinctly smoother and more shining, and except for their 
dai’ker legs are very similar to lugens, which occurs in the same 
region. The tarsal claws in lugens are, as in opacus, yellowish 
or pale rufous. 
The confusion of opacus with the uiariiius of Gyllenhall is 
due, as explained by Sharp, to Suffrian’s misinterpretation of 
Sahlberg’s species, an error which persisted until detected l)y 
Seidlitz in 1887, and R.egimbart in 1891. 
I have seen no genuine American examples of luarlnus and 
v(M'y much doubt its occurrence Avith us, allhough Regimbart 
continued to record it in one or another of his Supplements as 
from ‘Ghe United States,” ‘'North America,” “Greenland,” 
and “Hudson Bay.” 
30. Gyrinus wallisi new species 
Form rather broadly oval, more depressed tlian usual; black, sides nar- 
rowly and obscurely bronzed; surface luster rather dull, owing to an extremely 
hue alutaceous sculpture and a rather dense minute punctulation covering 
the entire surface of the eRdra. The elytral striae, especially in the females, 
show a tendency to become feebly impressed, more distinctly so toward 
the apex where the surface is notably uneven; strial punctures not or scarcely 
larger laterally. Body beneath metallic black, anal segment concolorous or 
nearly so; legs rufous, middle and hind femora more or less dusky; tarsal 
claws dark brown or i)iceous. 
Male (leitilalia. — Piceous; middle lobe gradually narrowed to apex, wIh'H' 
il is h^ss than half as wide as t he lateral lobes, flattened above at tij), which 
is narrowly rounded. 
Ijcruilh, .'5.2 to (i.S mm.; width, 2. So to 3.t) mm. 
Type locality . — Pitpiiteiiay River, iManitoba — Type d^, in 
tlie author’s collection. 
The type scries contains specimens also from Le Pas tiiid 
Mile 2.o(), Hudson Ihiy Railway, all collected and sent me by 
Ml'. .L B. Wallis of Winni|)eg, to whom it is a pleasure to dedi- 
cate the si)(‘cies, in recognition of his enthusiastic and success- 
ful (luest of the Gyrini of his region. 
