Casey — A Revision of the American Paederini. 209 
as deep and scarcely rounded at the bottom. Length 1.9-2.4mm. Cali- 
fornia (Palm Springs — on the western border of the Colorado Desert). 
ealifornicus Fall 
18—Elytra only slightly shorter than the prothorax. Body slender, 
parallel, small in size, colored as in exiguus and similarly sculptured, 
the punctures of the rather convex under surface of the head less 
evident; head well developed, distinctly elongate, parallel at the sides, 
the convex eyes at twice their length from the base; antennae shorter 
than the head and prothorax, rather stout and only very feebly and 
gradually incrassate distally; prothorax much longer than wide, only 
just visibly narrower than the head, the sides subparallel behind the 
obtuse and slightly rounded angles at apical fifth; elytra scarcely 
visibly wider than the head, parallel, slightly elongate, distinctly wider | 
and only very slightly shorter than the prothorax; gular sutures well 
separated. Length 2.0 mm.; width 0.32 mm. New York, Virginia 
(Fort Monroe) and Mississippi (Vicksburg)...... .----delicatus n. sp. 
Elytra very much shorter than the prothorax......-ssessessssesecs iveawsue 
19 — Body extremely slender, pale ochreo-testaceous in color throughout; 
parallel in form, the lustre rather shining and only moderately aluta- 
ceous; abdomen faintly dusky except toward tip; head large, but little 
longer than wide, rather wider near the base than across the eyes, which 
are convex and at about twice their length from the base as usual; an- 
tennae rather thick, much shorter than the head and prothorax, dis- 
tinctly incrassate distally; prothorax evidently elongate, much narrower 
than the head, the sides feebly convergent behind the obtuse and some- 
what rounded angles, the latter near apical fourth; elytra very small, 
much narrower than the head, barely as long as wide, scarcely visibly 
wider than the prothorax and only about three-fourths as long, the 
sides feebly diverging from the basal angles; abdomen subequal in 
width to the elytra; gular sutures well separated. Notch of the sixth 
ventral in the male of the usual form though less deep than in exiguus. 
Length 2.4 mm.; width 0.38 mm. Iowa (Iowa City),—Mr. Wickham. 
brachypterus n. sp. 
Body notably stout, parallel, strongly alutaceous, the pronotum more 
Shining. ..+..- soos cece seeee ecccces ee eceeecesecceces rrerrrr reer rs +20 
20—Color dark piceous, the abdomen blackish, the prothorax, legs and 
antennae dusky-testaceous; head large, not longer than wide, parallel, 
the eyes moderate and at fully twice their length from the base; 
antennae well developed, subequal in length to the head and prothorax, 
distinctly incrassate distally; prothorax stout and but little longer than 
wide though obviously narrower than the head, the sides feebly con- 
verging and somewhat arcuate behind the obtusely rounded angles at 
apical fourth; elytra about as long as wide, not quite as wide as the 
head, very slightly wider than the prothorax and about four-fifths as 
long; gular sutures well separated. Notch of the sixth ventral of the 
male normalinform. Length 2.6 mm.; width 0.48 mm. Alabama. 
saginellus n. sp. 
Color and general form nearly as in saginellus, the anterior parts and legs 
paler, the pronotum pale testaceous; head large, not longer than wide, 
the eyes well developed and at barely twice their own length from the 
