LeConte.] 610 [April 15, 
of appreciation of his success in recovering many local 
species, which would otherwise have remained undeter- 
mined. 
37. ADgialia rufa. Elongate, cylindrical, not very convex, rufous. 
Head finely scabrous, with an obsolete transverse impressed line ; epistoma 
very finely margined, sub-truncate. Prothorax scarcely wider than long, 
sub-quadrate, sides very slightly rounded, fringed with stiff hairs, serrate 
towards the base, which is broadly rounded and distinctly margined ; front 
angles prominent, hind angles rounded, disc coarsely sparsely punc- 
tured with some fine punctures intermixed. Elytral striz deep, distinctly 
punctured, interspaces smooth. Scutellum small, smooth. Front tibiz 
with three large teeth, middle and hind tibize gradually but moderately di- 
lated, transverse ridges short ; spurs of hind tibize long, hind tarsi two- 
thirds as long as the tibie. Length 4.5 mm ; .175 inch. 
Marquette, Lake Superior, two specimens; California, 
( precise locality unknown, probably from the Sierra Nevada), 
one example. The humeri in one Lake Superior specimen 
are prominent and tuberculate, in the other two rounded ; 
in the former the spurs of the hind tibie, though not longer, 
are more slender than in the two with simple humeri. These 
differences are probably sexual, but cannot be fully investi- 
gated without more specimens. 
For the easy recognition of our species of this genus | 
have enlarged the table given by Dr. Horn (Trans, Am. Ent. 
Soe., 1871, 293), as follows : 
Table of species of ALGIALIA. 
Spurs) of hind tibiee lone sandlslemdersmrcni.t< ce lraieies oe etaleteisereraiees 2. 
Spurs of hind tibie flattened and broad ; hind tibiee gradually and mod- 
erately thickened, with two transverse ridges.............2.-.2.- 3. 
Spurs of hind tibiz long, thick, obliquely truncate ; hind tibie grad- 
ually and very strongly thickened......... DoDI SoDOS OOD FOScbobbe 4. 
Spurs of hind tibiz very short, cylindrical, hind tibiz very strongly 
thickened). <.2.¢ vslewni« Jods diasobo conaooe ajo: joie wfelaaiere <fopssstetaier aie eiavae 5. 
2. Cylindrical, rufous, hind tibize with two transverse ridges..1. rufa. n. sp. 
Sub-cylindrical, black, hind tibiz serrate; elytral interspaces punc- 
UUM ays tetra chic ever ayaits Share aubvsuefal aoyeleetiete’ She (red ohsecle oo tiers coaeee 2. cylindrica. 
Sub-cylindrical, black, hind tibiz serrate ; elytral interspaces smooth. . 
3. lacustris. 
3. Prothorax finely punctured ; black, sub-ovate.............. 4. conferta. 
4. Robust, slightly ovate, black ; prothorax coarsely punctured......... 
5. latispina, n. sp. 
Robust-ovate, black ; prothorax coarsely punctured..........6. crassa. 
