OF PHILADELPHIA. 2G9 



Fariuly 5. — Body flattened, oval ; intermediate and posterior 

 pairs of tibia with but a single series of spines. [44] 



17. H. SORDIDUS. — Thorax impunctured; marginal stria) of 

 the elytra none ; inner striae abbreviated. 



Body polished : head concave in front; transverse line very 

 obvious : thorax impunctured, marginal line .single : elytra desti- 

 tute of a marginal line; first, second, and third strise entire; 

 fourth, fifth, and sutural strise anteriorly abbreviated at the mid- 

 dle, subequal ; the sutural one often rather longest : anterior and 

 intermediate pairs of tibia3 five-toothed, of which the superior 

 tooth is very small, and with the appearance of a still smaller 

 one above : posterior tibiae with several spines. 



Length less than three-twentieths of an inch. 



This is very similar to H. fhpreasus of P]urope, but there is no 

 appearance of punctures on the thorax. 



[This is H. carolinns Payk., and belongs to Pfnti/wma. — Lec] 



18. H. ^QUALis. — Elytra destitute of obvious striae, minutely 

 punctured. 



Hister sequalis Melsh. Catal. 



Body much flattened, black : head slightly convex, very min- 

 utely punctured ; transverse line marginal, much arcuated : an- 

 tennae, capitulum rufous : thorax with very minute lateral punc- 

 tures, lateral line narrow : elytra punctured, punctures small, nu- 

 merous ; a very slight appearance of a marginal stria, and of one 

 or two oblique abbreviated ones at base: anterior tibiae somewhat 

 dilated, teeth four, obsolete; posterior tibiae unarmed. 



Length three-twentieths of an inch. 



To the unassisted eye, the elytra appear perfectly smooth, and 

 it is only on a close examination, aided [45] by a particular in- 

 cidence of light, that the strise we have described are at all visi- 

 ble. In some specimens, the anterior tibiae are hardly crenate, 

 in others they appear armed with four very short spine-like 

 teeth. 



[A species of Paromalus. — Lec] 



Family 6. — Punctured, convex ; sutural striae none. 



19. H. PUNCTULATUS. — Dorsal striae four, the inner ones ab- 

 breviated near the tip. 



Hister pmictulatus Melsh. Catal. 

 1825.] 



