LeConte.] 624 [April 18, 
Marquette; not rare. The club is transversely annulated, 
and it therefore belongs to Pityophthorus; the sexual differ- 
ences indicate that Xyleborus hamatus Lec., Am. Ent. Soc. 
1874, 72, isthe 2 of carinulatus Lee. ibid. (Pityophthorus car. 
Lec., Rhynch. 352). 
72. Pityophthorus sparsus. Xyleborus sparsus Lec., Tr. Am. Ent. 
Soc. 1868, 160. 
Marquette, Lake Superior; rare. This species, as is shown 
by the examination of well preserved specimens, has the club 
transversely annulated,and therefore belongs to Pityophthorus. 
There seems to be no sexual differences in the declivity of 
the elytra, but the & has the head fringed with very long 
hair. 
73. Xyleborus punctipennis. Slender, cylindrical, piceous, 
shining, thinly clothed with long erect yellow hair, granulato-asperate for 
more than one-half the length, sides and behind densely and coarsely punc- 
tured; smooth median line rather wide, very distinct. Elytra coarsely 
punctured, though not in altogether regular rows, suture elevated, and su- 
tural stria deep for the whole length; declivity oblique, retuse, concave 
part coarsely punctured ; there are two acute discoidal cusps, and several 
small indistinct marginal ones, the most anterior of which is near the su- 
ture and more prominent. Front tibiz moderately dilated, bidentate. 
Length 2.5 mm.; .10 inch. 
Marquette, Lake Superior; one 2 specimen. This species 
might be easily confounded with Pityophthorus sparsus, but 
on comparison the difference in the antennal club is quite 
obvious; in the present case it is thicker, and obliquely 
truneate at tip, so that the proximal half at least is smooth 
and shining, and limited by a curved line. The punctures of 
the prothorax and elytra are coarser and more numerous, and 
the apical declivity is also punctured. 
74. Xylocleptes decipiens. Slender, cylindrical, brown, shining, 
sparsely clothed with erect yellow hairs ; antennz and Jegs yellow. Pro- 
thorax longer than wide, slightly asperate in front with transverse rugosi- 
ties; sides and behind coarsely but not densely punctured ; median line 
and a smooth space each side well defined. Elytra <j coarsely punctured, 
punctures not arranged in rows; declivity nearly perpendicular, scarcely 
retuse, slightly impressed along the suture, which is feebly elevated. Head 
convex, finely punctured ; front tibiee moderately dilated, serrate with four 
or five very small teeth. Length 1.8 mm.; .05 inch. 
Detroit; one specimen. This species greatly resembles in 
sculpture Pityophthorus pulicarius, but is more slender, and the 
