162 : Trans. Acad. Sci. of St. Louis. 
3—Gular sutures gradually converging as usual, but remaining well sep- 
arated toward the base of the head.ccocesseveresecccevcce -cecccecce & 
Gular sutures becoming so nearly fused as to be inseparable with certainty 
toward the base of the head ...- ccccseccccccccveccceccscccccsceesess OD 
4— Body very slender, pale testaceous, rather shining, the head very large 
as usual, nearly as long as wide, much wider than the prothorax, dis- 
tinctly wider toward base than across the very small anterior eyes, the 
sides broadly arcuate and the basal angles widely rounded; punctures 
small but strong and close-set; prothorax distinctly obtrapezoidal, 
somewhat wider than long, the angles rounded and the sides very feebly 
sinuate toward the middle, more finely and sparsely punctured than the 
head; elytra small, quadrate, only very slightly wider and longer than 
the prothorax, rather closely and rugosely punctate; under surface of 
the head pale rufous, convex, shining, finely and sparsely punctate, the 
gular sutures strongly impressed and distinct. Male unknown. Length 
4.5mm.; width 0.75mm. California (Hoopa Val., Humboldt Co.). 
sinuatocolle Csy. 
Body much less slender and more depressed, dark testaceous in color 
throughout and rather less shining, the head relatively not so large, 
wider than long, the eyes more prominent and the sides behind them 
more nearly parallel and feebly arcuate, the width subbasally scarcely 
perceptibly greater than across the eyes, the angles broadly rounded; 
punctures finer, rather close-set; prothorax nearly as in sinwatocolle 
but without visible sinuation at the sides and less markedly narrower 
than the head; elytra distinctly longer, quadrate, a fifth or sixth wider 
than the prothorax aud nearly a third longer, similarly punctate; under 
surface of the head rather strongly and closely punctate, the gular 
sutures less impressed and with the intervening space longitudinally 
impressed toward base. Sinus at the middle of the sixth male ventral 
of the usual form, deep and broadly rounded at the bottom. Length 
4.5mm.; width 0.85 mm. Idaho (Coeur d’Aléne),— Mr. Wickham. 
helenae n. sp. 
5— Body moderately slender, larger in size and less depressed, dark cas- 
taneous in color throughout, slightly dull in lustre, the punctures — 
particularly of the head — being close-set; head large, not swollen at 
base, the sides behind the small and anterior eyes being parallel and 
broadly, evenly arcuate; basal angles only moderately broadly rounded; 
prothorax much narrower than the head, wider than long, obtrape- 
zoidal with the sides nearly straight, the angles rounded; elytra 
small, quadrate, only very slightly wider, though obviously longer, 
than the prothorax and distinctly narrower than the head; under sur- 
face of the head rather strongly, moderately closely punctate, pale in 
color, the double gular suture deeply impressed. Male sexual char- 
acters of the usual form, the semicircular notch of the sixth ventral 
moderately large. Length 4.7 mm.; width 0.8 mm. California (Sta. 
Clara C0.) ...0cccscvcccccsce woescccesesscccscvces soeessLODIGUm Cay. 
Body rather stout, somewhat depressed, parallel, dark castaneo-testaceous 
in color throughout and moderately shining; head moderately large, 
wider than long, inflated toward base, where it becomes much wider 
than across the eyes, the basal angles-broadly rounded; punctures fine 
