DESCRIPTIONS OF NEW SPECIES. 135 



HYMEMORUS MULS. 



419. H. f omnium is. Elongato-ovalis, piceus nitidus helvo-pubes- 

 cens, capite thoraceque fortiter punctatis, hoc latitudine sesqui breviore, 

 antrorsum angustato, lateribus rotundatis tenuiter marginatis, basi 

 bisinuata tenuissinie marginata, trifoveata ; elytris striis fortiter dense 

 punctatis, interioribus paulo impressis, scutellari distincta, interstitiis 

 parce subtiliter punctatis ; ore antennis pedibusque testaceo-ferrugineis, 

 femoribus paulo infuscatis. Long. -22 '24. 



Not rare in the Middle and Southern States. The species of 

 Hymenorus in my collection may be distinguished by the sub- 

 joined table : 



A. Surface shining, punctuation of thorax not dense ; 



a. Elytra of uniform color ; 



Thorax finely punctured. 1. PUNCTULATUS. 



Thorax not finely punctured, twice as wide as 



long; 



Striae not impressed, punctures distant. 2. PILOSUS. 



Striae scarcely impressed, punctures approximate ; 



Feet entirely rufo-testaceous. 3. OBScr/ojus. 



Thighs nearly yellow, tibise darker (pubes- 

 cence finer and nearly cinereous), 4. NIGRA. 



Thorax not finely punctured, one-half wider 



than long. 5. COMMUJTIS. 



b. Elytra ferruginous at base. 6. HUMEIIALIS. 



B. Surface less shining ; 



Thorax densely and coarsely punctured ; 



Sides parallel behind. 7. RUFIPES. 



Sides narrowed from the base to the tip ; 



Head; thorax, and elytra uniform piceous. 8. CONFERTUS. 



Head and thorax dull red, elytra piceous. 9. DENSOS. 



Thorax very finely and densely punctured. 10. PUNCTATISSIMUS. 



In H. obscurus and communis the males differ from the females 

 by the 3d joint of the antennae being but little longer than the 2d, 

 while in the femalgs the 3d joint is nearly or quite as long as the 

 4th ; in division B the 3d joint is as long as the 4th in both 

 sexes, but the antenna are .more strongly serrated from the 4th 

 joint inclusive, than in the females. In H. punctatissimus the 

 internal angle of the last joint of the maxillary palpi is more 

 rounded than in any of the other species. 



420. H. hlimeralis. Nigro piceus, nitidus, helvo-pubescens, capite 

 thoraceque haud dense punctatis, hoc latitudine sesqui breviore, a basi 



