LeConte.] 594 [April 18, 
tibia not toothed on the outer edge, terminal digitation long, slender, 
curved ; spur not longer than the first joint of the tarsus. Length 3.4 mm.; 
.135 inch. 
Detroit ; one specimen. This species is very distinet by 
the small size of the lower spur of the front tibize, and may 
be placed as a separate division in B, A,a, of my table 
(Proc. Ac. Nat. Soe. Phila. 1857, 76.) before sphericollis. 
2. Badister obtusus. Piceous, shining ; prothorax, base of antenne, 
palpi and legs testaceous ; elytra piceo-testaceous, lateral margin and base 
testaceous. Prothorax wider than long, narrower behind, hind angles 
rounded, indistinct, side margin not wider towards the base, which is not 
explanate towards the sides, basal impressions rounded, not extended to- 
wards the sides; dorsal line deep, transverse impressions feeble. Elytra 
with well-marked stri, interspaces nearly flat, 3d with two dorsal punc- 
tures contiguous to the 2d stria. Length 5.8 mm.; .23 inch. 
Marquette, Lake Superior; one specimen. More allied to 
the Californian B. ferrugineus than to any other in my col- 
lection, but easily known by the more rounded hind angles 
of the prothorax. 
' 3. Bembidium (Notaphus) arcuatum. Black, with a greenish 
bronzed lustre. Antennal scape, palpi and legs piceo-testaceous. Elytra 
piceous, with ill-defined testaceous markings, viz.: a humeral cloud, lateral 
narrow margin, curved band behind the middle, which is concave back- 
wards, and apex ; epipleuree black and testaceous. Prothorax wider than 
long, rounded on the sides, strongly sinuate behind, base as wide as the 
apex , hind angles rectangular, carinate ; basal impressions deep, dorsal 
line well-impressed, transverse impressions feeble. Elytra elongate-oval, 
humeri rounded, strice distinctly punctured to behind the middle, then finer 
and smoother ; 8th stria deep near the tip ; dorsal punctures two, on the 3d 
interspace. Length 5.4 mm.; .21 inch. 
Marquette, Lake Superior. This species resembles B. flam- 
mulatum of Europe, but is wider and less convex. It also 
greatly resembles B. incrematum Lec. from Cala., Oregon and 
Alaska, but the latter has the elytral markings undefined, 
and the strize finer and less strongly punctured. 
4. Bembidium (Notaphus) versutum. Beneath black, shining ; 
above bronzed ; head and prothorax not polished ; antennz piceous, base, 
palpi and legs testaceous. Prothorax wider than long, narrowed behind, 
sides rounded in front, strongly sinuate behind, base not narrower than the 
apex ;. basal angles rectangular, carinate, basal impression rugose, deep ; 
dorsal line abbreviated at each end, transverse impressions obsolete. Ely- 
tra elongate-oval, wider than the prothorax, humeri rounded, angles slightly 
marked ; strie entire, fine, finely punctulate to behind the middle, inter- 
