Casey — A Revision of the American Paederint. 185 
8.4-3.6 mm.; width 0.52-0.62 mm. California (Lake and Humboldt 
COS.) .ccrccccsccccceccccccvccsccscccccscsccccessoo sss cuienta Csy. 
Body narrower and more parallel, more slender and rather smaller in size; 
head nearly as in luculenta; prothorax but slightly wider than long, 
rather distinctly obtrapezoidal in form, the apical angles but little 
rounded; elytra relatively smaller and narrower than in luculenta, but 
very slightly wider and one-half longer than the prothorax. Length 
3.2 mm.; width 0.6 mm. Nevada (Reno), California (Truckee), Wash- 
ington State (Spokane) and Idaho (Coeur d’Aléne)....peregrina n. sp. 
10 — Body relatively rather stout, parallel, black and somewhat shining, the 
elytra, legs and antennae castaneous-brown; punctures minute and 
close- set, coarser and more widely separated on the head, the latter 
well developed, as long as wide, but slightly narrower than the pro- 
thorax, parallel and straight at the sides as usual, the basal angles nar- 
rowly rounded; prothorax much wider than long, slightly obtrapezoidal, 
the angles distinct; elytra well developed, nearly a fourth wider and 
three-fifths longer than the prothorax. Length 3.3 mm.; width 0.62 
mm. Nevada (Carson City),— Mr. Wickham.............conjux D. sp. 
il — Sides of the prothorax parallel, broadly and feebly arcuate. Body 
rather slender, parallel, moderately shining, black, the prothorax piceo- 
castaneous, the elytra still paler, especially so broadly toward tip; head 
noticeably narrower than the prothorax, rather strongly and closely 
punctured as usual, fully as long as wide, parallel and straight at the 
sides; prothorax but very little wider than long, minutely punctate, the 
angles less rounded than in mobdilis; elytra about a fifth wider and 
three-fourths longer than the prothorax, parallel. Length 3.5 mm.; 
width 0.68 mm. California (middle coast regions).....contracta Csy. 
Sides of the prothorax more or less feebly convergent from the apical 
angles to the base; head as wide as the prothorax or somewhat wider; 
species smallest of the genus, Slender... cece cecccecesesecccsessccecels 
12 — Body black, the pronotum and elytra uniform and pale castaneous- 
brown, the latter only slightly paler at the extreme tip, the legs and 
antennae still paler; integuments shining; head as wide as the prothorax 
or just visibly narrower, as long as wide, shining, the punctures dis- 
tinctly separated; prothorax almost as long as wide, the angles all well 
rounded; elytra but little longer than wide, nearly a fourth wider and 
barely one-half longer than the prothorax; abdomen somewhat wider 
than the prothorax. Length 3.0 mm.; width 0.6 mm. California 
(Humboldt Co.) to Washington State (Spokane)........discolor nu. sp. 
Body black, the pronotum piceous, the elytra blackish-piceous, paler at the 
apices especially toward the sides; surface feebly shining; head large 
for the present genus, somewhat wider than the prothorax, coarsely 
and not very densely punctate, fully as wide as long, parallel and 
straight at the sides; prothorax small, almost as long as wide, the angles 
rounded, the sides only just visibly convergent; elytra distinctly longer 
than wide, fully a fourth wider and three-fifths longer than the pro- 
thorax, finely but strongly, not very densely punctured. Length 2.75 
mm.; width 0.55mm. California (Sta, Clara Co,)........tantilla Csy. 
Body pale testaceous throughout, the elytra still paler and more flavate and 
the abdomen piceous; surface rather shining; head well developed, 
