144 Trans. Acad. Sei. of St. Louis. 
very sparse, forming a widely-set series along the median smooth 
space; elytra subparallel, distinctly longer than wide, a fourth longer 
and fullya fourth wider than the prothorax, the punctures small and 
sparse but arranged in widely and feebly impressed series; abdomen 
distinctly narrower than the elytra, subparallel, finely, not densely 
punctulate. Male unknown; female with the sixth ventral evenly and 
rather strongly rounded behind. Length4.1mm.; width0.66 mm. Penn- 
BylVanias. os. s seis cease shane pu bene veneer ns ceceeeee sees FUtiIANS 0. Sp. 
Neither of these species seems to be at all common and I 
have but four examples altogether. 
Dacnochilus Lec. 
The general habitus of this genus is similar to that of L- 
nolathra and the coloration of the body also reminds us of the 
small slender species so named above. There are many 
structural features, also, that prove the very close relation- 
ship existing between the two genera, such as the hind tarsi, 
gular sutures and disposition of the elytral punctures. Dac-. 
nochilus differs especially in the form of the labrum, in the 
short obtrapezoidal form of the prothorax and presence of 
long stiff tactile setae bristling at the sides of the body —so 
greatly developed in Acalophaena. We have, as far as 
known, but a single species as described below: — 
Form slender, convex and parallel, polished, pale testaceous throughout, 
except about basal half of the elytra, which is abruptly black; head 
well developed, wider than long, with a few coarse impressed punctures 
near the sides, the latter feebly diverging behind the eyes and slightly 
arcuate, the angles narrowly rounded; eyes large, prominent, at about 
a third more than their own length from the base; antennae distinctly 
longer than the head and prothorax, rather slender basally but gradually 
strongly incrassate distally, the medial joints less than one-half longer 
than wide; prothorax obtrapezoidal, distinctly wider than long, equal 
in width to the head, the sides very feebly arcuate, the anterior angles 
narrowly rounded, the basal more broadly, the punctures rather small, 
very widely scattered toward the sides anteriorly and widely spaced in a 
single series at each side of the median smooth area, elsewhere wanting; 
elytra not quite as long as wide, parallel, the sides feebly arcuate 
posteriorly, slightly wider and longer than the prothorax, the punctures 
fine and feeble, widely spaced in a very few widely separated series, 
each puncture bearing a stiff hair; abdomen behind the middle as wide 
as the elytra, slightly narrower at base, finely, very sparsely punctulate 
and polished. Male with the fifth ventral unmodified, except a small 
