Casey — A Revision of the American Paederini. 209 



as deep and scarcely rounded at the bottom. Length 1.9-2.4 mm. Cali- 

 fornia (Palm Springs — on the western border of the Colorado Desert) . 



californicas 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 aud 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) delicatns n. sp. 



Elytra very much shorter than the prothorax 19 



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 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 normal in form. Length 2.6 mm.; width 0.48 mm. Alabama. 



saginellns 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 



