Casey — A Revision of the American Paederini. 197 
throughout, the legs and antennae brown, alutaceous because of very 
minute reticulation, the elytra shining; head well developed, scarcely 
longer than wide, parallel and broadly arcuate at the sides, the angles 
broadly rounded, the base truncate; surface very finely and closely punc- 
tate throughout; antennae not as long as the head and prothorax, with 
joints two to four decreasing slightly in length; prothorax much longer 
than wide, distinctly narrower than the head, the obtuse rounded anterior 
angles situated at apical fourth or fifth; surface more coarsely and un- 
usually closely punctured throughout, the median line feebly elevated 
toward base; elytra but little longer than wide and only about a fifth 
longer than the prothorax, though fully two-fifths wider, parallel, finely 
but strongly, asperately punctate; abdomen parallel and elongate, wider 
than the head; gular sutures fine but evident,somewhat widely separated, 
the intervening space more strongly and coarsely micro-reticulate than 
the remainder of the surface. Male unknown. Length 3.5 mm.; width 
0.5mm. California (Lake Tahoe).........+++++++++-Longicollis n. sp. 
Sides of the prothorax parallel or not distinctly converging, nearly straight, 
the obtusely rounded apical angles more anterior, at about apical fifth 
OF BERG ons hed cose ee tu cecedcc dinebacees Geet we sesedacoeccesosemteses & 
4— Larger species, parallel in form, dark rufo-piceous in color, except the 
head and abdomen which are blackish; surface moderately shining, the 
micro-reticulation of the anterior parts evident but feeble; head well 
developed, slightly longer than wide, throughout nearly as in longicollis, 
the antennae nearly as long as the head and prothorax, with joints two 
and three equal in length, the fourth shorter; prothorax unusually large, 
but little, though evidently, narrower than the head, a third longer than 
wide, the punctures rather coarse and unusually close-set throughout 
but not very deep; elytra but little longer than wide, parallel, very 
finely and rather closely punctate, barely a fifth longer than the protho- 
rax and nearly one-half wider; abdomen much narrower than the elytra 
though obviously wider than the head; gular sutures nearly as in longi- 
collis. Male unknown. Lg 3.3 mm.; width 0.68 mm. California 
(Napa and Sonoma CoS.) ...sesscese cececces cece - .parallelus Csy. 
Smaller in size, shining, the micro- eptieubation wicaneby ‘waciable: black in 
color throughout, the legs and antennae piceous; head well developed, 
scarcely visibly longer than wide, nearly as in the preceding species in 
form, the minute but deep punctures rather less close-set; antennae 
shorter than in parallelus, distinctly shorter than the head and pro- 
thorax, with joints two to four gradually decreasing in length as usual; 
prothorax relatively smaller, much narrower than the head, the punc- 
tures larger than those of the head as usual but fine, sparse and notably 
feeble; elytra only just visibly longer than wide, with the sides very 
feebly diverging from base to apex, about a fifth longer and two-fifths 
wider than the prothorax, finely, not very densely punctate; abdomen 
but little narrower than the elytra and much wider than the head; gular 
sutures nearly as in the preceding. Male unknown. Length 3.0 mm.; 
width 0.6mm. Idaho (Coeur d’Aléne), — Mr. Wickham. 
boreelius n. sp. 
5 — Prothorax subequal in width to the head, rather larger in size than in 
punctatus, nearly black in color and of rather robust form. Fifth ven- 
