420 Coleopterological Notices. 



5. — Elytra! strise more or less interrupted ; pubescence ratlier easily remova- 

 ble but distinct in the normal state U 



Elytral strise not interrupted ; pubescence generally quite persistent 7 



6. — Surface lustre strongly aeneous ; elytral striae generally coarsely punc- 

 tured and very widely and frequently interrupted ; pronotal punctures 



sparser 3 metallicus 



Surface lustre rarely seneous ; color generally piceous-black, with the elytra 

 very slightly paler ; pubescence denser ; elytral strise generally more 

 finely punctured and less widely and repeatedly interrupted, sometimes 

 very slightly interrupted ; pronotal punctures denser ; size larger ; form 

 more robust, with the prothorax less strongly narrowed from base to apex. 



4 interruptus 

 7. — Elytral strise coarsely punctured ; hind wings generally well developed ; 



upper lobe of the eyes unusually large 8 



Elytral striae strongly impressed, finely punctured toward the suture but 

 rapidly coarsely so laterally ; form robust, very convex ; pubescence 

 rather short and coarse ; wings very rudimentary, the elytra subconnate. 



13 prateitsis 

 Elytral strise finely punctured, usually feebly impressed ; wings generally more 



or less rudimentary 9 



S. — Pronotum sparsely punctate, at least toward the middle. 



Castaneous-brown, the anterior portions sometimes darker, piceous ; size 



much smaller (4.5-5.0 mm.) 5 flisctis 



Black or piceous-black throughout ; size large, never much less than 6 mm. 

 in length. 

 Rather depressed, the pubescence short, sparse and stiff; abdominal 



punctures very coarse 6 loilglllllS 



More convex, larger ; pubescence long. 



Elytral stria? feebly impressed and distantly punctured ; body much 



more elongate and parallel 7 validus 



Elytral strise very strongly impressed and closely punctured... 8 fortis 

 Pronotum very densely punctate throughout. 



Form robust, oblong ; elytral strise moderately impressed. 



Pronotum rather coarsely punctate, the punctures strongly longitudinally 

 confluent throughout, the sides very strongly arcuate, the disk widest 

 at basal third ; elytral pubescence longer but finer, consisting of yellow 

 and piceous hairs confusedly intermingled ; intervals about five times 



as wide as the strial punctures 9 dila.ta.tus 



Pronotum rather finely punctate, the punctures not tending to coalesce 

 longitudinally ; sides much less strongly arcuate, the disk widest at 

 base ; elytral pubescence uniform, bright ochreous-yellow, short, dense, 

 very coarse and conspicuous ; intervals very wide and flat, from six to 



seven times as wide as the strial punctures 10 sonoraB 



Form elongate-oval, much narrower ; pubescence fine, rather long, sparse, 



dark and inconspicuous. 



Eyes rather smaller ; pronotal punctures coarser and generally strongly, 



longitudinally rugulose toward the sides which are more strongly 



arcuate ; elytral striae rather strongly impressed 11 castaiieilS 



