240 MEMOIRS ON THE COLEOPTERA 



The type seems to be a male, notwithstanding the unusually 

 short and distinctly incrassate antennae. From the European 

 brevicornis it differs in its more slender form, less abbreviated elytra, 

 relatively shorter fifth tergite and darker coloration. 



Myllaena brevivestis n. sp. Still smaller and more slender, similarly 

 convex, paler brown in color, the head and abdomen blackish, the latter 

 slightly pale at apex; integuments feebly shining, minutely, very closely 

 punctulate and with the palish vestiture composed of extremely small fine 

 decumbent hairs throughout; head nearly as in the preceding, the antennae 

 even somewhat shorter, stouter and more distally incrassate, but with 

 the last joint longer, the tenth distinctly wider than long; prothorax 

 similar throughout but shorter and more transverse; elytra much more 

 abbreviated, strongly transverse, the suture barely two-thirds as long as 

 the shorter prothorax, the apical sinuses distinct; abdomen similarly 

 narrower than the elytra and moderately tapering, the segments two to 

 five gradually increasing in length, the fifth rather abruptly narrower than 

 the fourth, nearly two-thirds as wide as the base. Length 1.28 mm.; 

 width 0.31 mm. Rhode Island (Boston Neck). 



I at first considered the two specimens of this species as females 

 of the preceding male, but on closer observation it proves by no 

 means certain that they are females, as the sixth tergite is almost 

 similarly obtusely angulate and the sixth ventral plate rather 

 strongly rounded. That they represent a distinct species, however, 

 is certain when we view the very different vestiture of extremely 

 small, even and decumbent hairs, as well as the shorter prothorax, 

 much more abbreviated elytra, paler coloration and the very much 

 smaller size. 



Myllaena immunda n. sp. Minute, more parallel than usual, moder- 

 ately convex, piceous-black throughout, somewhat dull, the minute 

 punctures close, asperulate on the elytra and toward the pronotal base, 

 very minute and sparser on the more shining abdomen, the vestiture 

 rather coarse, dark in color, moderately short, longer on the abdomen; 

 head three-fifths as wide as the prothorax, the antennas blackish, rather 

 slender and almost filiform, moderately long, the tenth joint much longer 

 than wide, the last slender, almost as long as the two preceding; prothorax 

 greatly developed, widest behind the middle, more than one-half wider 

 than long, much wider than any part of the elytra, only moderately 

 narrowed toward apex, the latter broadly truncate, the sides rounded, 

 the base feebly arcuate, very slightly sinuate laterally, the angles obtuse, 

 distinct though only slightly prominent posteriorly; elytra very short, 

 the suture only three-fifths as long as the prothorax, the apical sinuses 

 rather shallow; abdomen at base about as wide as the elytra, only moder- 

 ately tapering, the fifth tergite nearly three-fourths as wide as the base, 

 the margins rather thin. Length 1.2-1.5 mm.: width 0.35-0.42 mm. 

 Canada (Ottawa), W. H. Harrington. 



