62 Journal New York Entomological Society. [Vol. vm 



4 — Head entirely concealed from above, the prothorax almost evenly rounded ante- 

 riorly and more descending, the margins not distinctly thickened and the hind 

 angles acute and somewhat more posterior than the median parts of the base ; 

 maxillary palpi moderately stout, regularly acuminate Gronevus 



Head partially visible from above, the prothorax sensibly sinuate at apex, the margins 

 with a distinct thickened bead and the hind angles right ; maxillary palpi very 

 stout Rypobius 



5 — Anterior tibia? flattened, the external edge acute, the axial line feebly arcuate 

 throughout ; body larger Eut rilia 



Anterior tibire slender, inwardly bent distally ; body very minute Orthoperus 



I have restored the original spelling of Rypobius, although it may 

 not be etymologically correct. The European Moronillus of Du Val 

 is identical, having similar structure and habits. 



Bathona, gen. nov. 

 In this genus the body is broadly oval, convex, polished and gla- 

 brous, with the edges of the pronotum subexplanate and diaphanous, 

 and the hind angles not posteriorly produced. The tarsi are long and 

 are compressed toward base. The species may be denned as follows : — 



Body moderately convex, the sides and apex of the pronotum widely subexplanate ; 

 antennal club large 2 



Body very strongly, globularly convex, the limb of the pronotum very narrowly sub- 

 explanate ; antennal club rather less developed 3 



2 — Elytral punctures small and sparse but very distinct, impressed, each bearing, as 

 usual, an excessively minute fine decumbent hair, black, the pronotum piceous- 

 black, the edges broadly transparent and hyaline ; under surface paler, the legs 

 and antennte rufescent. Length 1.35 mm. ; width 0.9 mm. North Carolina 

 (Asheville) Carolina?, sp. nov. 



Elytral punctures smaller and almost effaced ; body smaller, black, the pronotal limb 

 broadly transparent and hyaline ; under surface and legs paler. Length I.I mm.; 

 width 0.75 mm. Virginia (Norfolk) \ irginica, sp. nov. 



3 — Impunctuate, piceous in color, the edges of the pronotum narrowly transparent 

 and hyaline, the disk gradually darker toward the middle and base. Length 1.0 

 mm.; width 0.78 mm. North Carolina (Asheville) COnvexa, sp. nov. 



Smaller and with feeble but visible traces of punctuation, piceous or testaceous in color, 

 the under surface and legs more flavate. Length 0.8 mm ; width 0.7 mm. 

 Pennsylvania (near Philadelphia) spha^ricula, sp. nov. 



Individuals are rare, but virginica is represented before me by a 

 number of examples, which exhibit no noteworthy variability. 



Corylophodes Matth. 



As in the preceding, the antennae in this genus have five small com- 

 pacted and gradually wider joints between the third and the first joint 



