Casey — A Revision of the American Paederint. 239 
11— Head large, nearly as wide as the elytra and not very much longer 
than wide. Body rather stout, parallel, pale ochreo-testaceous in 
color, the head, a large internally rounded{spot on each elytron extend- 
ing from basal fourth to apical sixth and from the side margin to 
inner third, and the last two abdominal segments, black, the legs and 
antennae very pale as asual; head of the usual form, but little narrower 
before than behind the eyes, the latter moderate in size and promi- 
nence; prothorax three-fourths to four-fifths as wide as _ the 
head, longer than wide, of the usual form, the sides rather strongly 
rounded at apical fourth, thence moderately converging and straight to 
the broadly rounded basal angles; elytra large, only slightly elongate, 
feebly narrowed at tip, a third wider and longer than the prothorax; 
abdomen rather wide, gradually broader behind. Male unknown. 
Length 3.5 mm.; width 0.6 mm. I[owa...--..+...- .--- Simulans nD. sp. 
Head smaller, much narrower and more elongate, distinctly narrower than 
the C1Ytra.-coscesscsecrseccersesccees voce eeee seen eseeeevee seve ee sene 12 
12— Form slender, rather shining, pale ochreo-testaceous, with the head, a 
large internally rounded spot on each{elytron from basal fourth to apical 
eighth and from the side margin to inner fifth, and the last three 
abdominal segments, black, varying to completely black, with the 
elytral suture feebly and narrowly rufescent, the legs and antennae always 
pale honey-yellow throughout; eyes strongly convex and prominent, at 
their own length from the base; prothorax short though longer than 
wide, the sides strongly rounded at’apical fourth, thence strongly con- 
verging and straight to the basal angles, the side margins bristling 
with several long stiff black setae; elytra distinctly elongate, feebly 
narrowed at tip, two-fifths wider and longer than the prothorax; 
abdomen at base slender, distinctly narrower than the tip of the elytra, 
gradually slightly wider behind. Male with the fifth ventral feebly flat- 
tened along the middle, the acute cusp-like incisure of the sixth large, 
as deep as wide, with its sides broadly rounding outward posteriorly, 
the edge only anteriorly and finely beaded, the opening fully half as 
wide as the segmental apex. Length 3.3-3.7 mm.; width 0.5-0.55 mm. 
Texas (Galveston) .coccesccccccccccccccecccccecceecs INCONStAaNs D. sp. 
Form slender, nearly as in the preceding, pale testaceous in color, the head, 
a larger but less elongate, internally rounded spot on each elytron, ex- 
tending from basal third or two-fifths to apical eighth and from the 
side margin to inner fifth or sixth, and the last two abdominal seg- 
ments, black; head relatively still narrower and more elongate, the 3 
eyes somewhat larger but less prominent and at rather more than their 
own length from the base, the sides behind them rather less converging 
to the broadly arcuato-truncate base; prothorax much more elongate, 
the sides at apical fourth more broadly rounded and thence only feebly 
converging to the basal angles, the side margins with only about two 
stiff setae, one anterior and the other near the base; elytra nearly sim- 
ilar but still more elongate, a third or fourth wider and longer than 
the prothorax; abdomen very slender, still more notably narrower at 
base than the apex of the elytra, gradually perceptibly wider behind. 
Male with the fifth ventral narrowly and feebly impressed along the © 
median line, the notch of the sixth very wide, the widely diverging 
