238 MEMOIRS ON THE COLEOPTERA 



broadly rounded, the base broadly arcuate, with the lateral sinuses 

 almost obsolete, the angles not projecting posteriorly and decidedly 

 obtuse; elytra as wide as the prothorax and very little shorter, strongly 

 transverse, the lateral sinuses at apex distinct; abdomen moderately 

 tapering, the fifth tergite three-fifths as wide as the base, the sixth (cf) 

 very broadly and obtusely angulate at apex. Length 1.8 mm.; width 

 0.6 mm. Pennsylvania (near Philadelphia). 



A very distinct species in its pale color, very dense and remarkably 

 short pale vestiture and in the conformation of the thoracic base. 

 The basal joint of the antennae is very convex on its lower surface 

 basally, and is attached by the upper angle of the base apparently 

 as usual in this genus. 



Myllaena obscurata n. sp. Rather small but stout, moderately convex, 

 somewhat shining, piceous, the abdomen blackish, pale at apex; minute 

 punctures and the moderately short palish vestiture less dense than usual; 

 head unusually large, nearly two-thirds as wide as the prothorax, the 

 antennae (9) not very slender, distinctly incrassate distally, the joints 

 eight to ten slightly longer than wide; prothorax short, nearly three-fifths 

 wider than long, only moderately narrowed at apex, widest behind the 

 middle, the sides broadly, subevenly rounded, the base broadly, evenly 

 and moderately arcuate from side to side, without trace of lateral sinua- 

 tions, the basal angles obtuse and rather broadly rounded; elytra sub- 

 parallel, with feebly arcuate sides, fully as wide as the prothorax and 

 scarcely visibly shorter, the lateral sinuses at apex distinct and rather 

 deep; abdomen at base not quite as wide as the elytra, much less conical 

 than usual, the sides feebly arcuate, moderately tapering, the fifth 

 tergite three-fifths as wide as the base. Length 1.75 mm. ; width 0.6 mm. 

 New Jersey (Atlantic City). 



The single female type represents a very peculiar species in its 

 large head, evenly arcuate thoracic base, with rounded basal angles, 

 and in the somewhat arcuate sides of the abdomen. 



Myllaena procidua n. sp. Slender, only moderately convex, dull 

 piceous-brown, the elytra gradually pale apically, the abdomen blackish, 

 slightly palish apically, the very minute punctures and excessively 

 minute palish hairs both extremely dense even on the head, as in insipiens; 

 head three-fifths as wide as the prothorax; antennae (c?) very slender 

 and filiform, the basal joints as usual, the tenth more than one-half 

 longer than wide; prothorax rather more than one-half wider than long, 

 but little narrowed anteriorly, with broadly arcuate sides, the base 

 notably arcuate, becoming scarcely visibly sinuate laterally, the basal 

 angles slightly more than right but distinct; elytra rather long, parallel, 

 with nearly straight sides, equal in width to the prothorax, the suture 

 distinctly longer than the latter, the apical sinuses deep; abdomen slender, 

 at base notably narrower than the elytra, very gradually tapering or 

 conical and with straight sides, the fifth tergite but little longer than the 



