244 MEMOIRS ON THE COLEOPTERA 



Myllaena scobinella n. sp. Form and convexity as in the preceding, 

 piceous-black throughout, the abdomen pale at tip, the legs pale; lustre 

 rather shining, the minute punctures not very dense, distinctly asperate 

 on the elytra, the pubescence not very pale and scarcely concealing the 

 surface, moderately short; head half as wide as the prothorax, the an- 

 tennae missing in the type; prothorax as in umbra throughout; elytra 

 shorter, parallel, equal in width to the prothorax, the suture three-fourths 

 as long as the latter, the apical sinuses small and very feeble, much less 

 distinct than usual; abdomen at base not quite as wide as the elytra, 

 evenly and moderately tapering, with straight sides and thin margins, 

 the fifth tergite three-fifths as wide as the base, as long as the two pre- 

 ceding combined. Length 1.62 mm.; width 0.63 mm. British Columbia 

 (Metlakatla), J. H. Keen. 



Readily distinguishable from umbra, which alone it resembles in 

 any way, by its much shorter elytra, with the apical sinuses un- 

 usually small and feeble; also by its less strongly tapering and less 

 acute abdomen. 



Myllaena molesta n. sp. Large, stout, convex, piceous-black, paler 

 at the tip of the abdomen, rather dull in lustre, the minute palish de- 

 cumbent hairs dense throughout, mingled, except on the abdomen, 

 with more erect and sparser hairs; head half as wide as the prothorax. 

 the antennae (cT ) long, slender, very feebly incrassate, dark brown, the 

 last joint paler, long and slender and nearly as long as the two preceding, 

 the tenth more than one-half longer than wide, feebly obconical; pro- 

 thorax fully one-half wider than long, generally paler apically and basally, 

 the sides parallel, broadly rounding and converging from near the base 

 to the much narrowed apex, the base very feebly arcuate, the angles 

 feebly prominent posteriorly and distinct; elytra well developed, fully 

 as wide as the prothorax, parallel, the suture very slightly shorter than 

 the pronotum, the apical sinuses large and deep; abdomen at base 

 narrower than the elytra, rapidly and evenly tapering, the fifth tergite 

 about half as wide as the first, the sixth (cf) angulate, the sixth ventral 

 plate prominently parabolic at tip. Length 2.35 mm.; width 0.8 mm. 

 California (coast regions north of San Francisco). 



Very distinct from any of the preceding species in its larger 

 size, slender and longer antennae, coloration and other characters. 



Myllaena dissimulans n. sp. Form and coloration nearly as in molesta 

 but not so stout and with the fine, dense and palish decumbent hairs not 

 mingled with longer erect hairs; head larger, somewhat more than half 

 as wide as the prothorax, the antennae relatively not quite so long, dark 

 though as usual pale at apex and basally, rather more evidently in- 

 crassate distally, the tenth joint obconic, scarcely one-half longer than 

 wide, the eleventh much shorter than the two preceding; prothorax 

 similar in form, the elytra also similar, except that the suture is nearly 

 as long as the pronotum; abdomen narrower and rather more rapidly 



