Casey — A Revision of the American Paederint. 229 
know at present but one species which may be described as 
follows from the male :— 
Elongate, rather slender, parallel, only moderately convex, dark red-brown 
in color throughout the body and antennae, the legs slightly paler; lus- 
tre dull, the elytra feebly shining; head rather longer than wide, the 
posterior half almost evenly semicircular in form, the eyes rather small, 
only slightly prominent and at about three times their length from the 
base measured longitudinally; antennae scarcely one-half longer than 
the head, somewhat thick, distinctly incrassate distally; punctures 
feebly granuliform and close-set above, obsolete and very sparse on the 
flat under surface; prothorax very densely punctured like the head but 
rather more finely and strongly, the median impunctate line very fine 
and scarcely entire, scarcely visibly longer than wide, three-fourths as 
wide as the head, oblong in form, the sides obtusely angulate androunded 
at apical fourth, thence just visibly converging and straight to the 
broadly rounded basal angles and rapidly converging and feebly sinu- 
ate anteriorly to the narrow neck, which is less than half as wide as 
the broad truncate basal margin; elytra quadrate, parallel, fully as long 
as wide, rather wider than the head andabouta third wider and longer 
than the prothorax, the punctures strongly and granularly asperate but 
less dense than those of the prothorax; abdomen parallel with the sides 
feebly arcuate, distinctly narrower than the elytra, very minutely, 
densely, subasperately punctulate. Male with the fifth ventral aimost 
completely unmodified, the sixth with a very large and deep emargina- 
tion, two-fifths as wide as the segment and somewhat wider than deep, 
the notch transversely and feebly rounded at the bottom, with its sides 
becoming almost parallel posteriorly. Length 5.7 mm.; width 0.95 mm. 
Disttictol Commins eid cicds se vicdeneseicd ea cceescseens CISGE Melab, 
This species does not seem to be at all abundant and most 
of the known examples were taken by Mr. Ulke. 
Omostilicus n. gen. 
' This genus is also represented at present by a single species, 
the largest of the subtribe known to me. It departs strik- 
ingly from Stzlicolina in its much larger head, very small eyes, 
form of the gular sutures, for the greater part non-carinate 
prosternum and structure of the labrum, but resembles it very 
much in sculpture, coloration and sexual characters. In both 
these genera the anterior tarsi are virtually undilated, even in 
the male, and are clothed beneath more or less sparsely with 
short stiff brown hairs, contrasting greatly with the dense 
