292 ACADEMY OF NATURAL SCIENCES 



2. E. 4-NOTATUS.— Black ; antennae, two spots on each ely- 

 trum, and tarsi rufous. 



Body black : antenna) entirely rufous ; thorax simple : elytra 

 with striae of punctures ; a large rounded rufous spot at the base 

 of each, chiefly on the humerus, and a rufous elongated, obsolete 

 one on the posterior declivity : tarsi rufous. 



Length less than one-tenth of an inch. 



MACRONYCHUS Mull. 



M. GLABRATUS. — Blackish ; feet slender ; antennae pale ru- 

 fous. 



Macronychm glahratus Knoch, J. F. Melsheimer. 



Body entirely blackish; slightly hairy : thorax [188] with a 

 slightly elevated line each side at base, hardly extending to the 

 middle : elytra with series of large punctures not very deeply 

 impressed ; a more distinct scries of hairs near the suture ; an 

 elevated, crenate, submarginal line extends from the humerus, 

 ))ut is abbreviated before the tip : feet elongated. 



Length rather more than one-tenth of an inch. 



HYDROPHILUS Linn. Fabr. 



1. H. ROTUKDUS. — Very convex, oval; elytra destitute of 

 striae, excepting the sutural one. 



Body black, polished, with very numerous, minute, regular 

 punctures : palpi piceous : thorax with the lateral margin pice- 

 ous ; this color extends a short distance on the basal margin : 

 elytra very obscurely piceous on the lateral margin, without any 

 appearance of striae or large impressed punctures; the sutural 

 striae very obvious, not reaching the base, generally hardly sur- 

 passing the middle. 



Length three-tenths of an inch. 



For this species I am indebted to Dr. J. F. Melsheimer, who 

 informed me that it inhabits " marshy places in forests near the 

 first ridge of the South Mountains, in Adams County, Pennsyl- 

 vania." I also found it in Georgia. It resembles (/foiosMS nob., 

 but is less convex, and is destitute of striae of the elytra. 



[Belongs to PhiUiydriis. — Lee.] 



2. H. STRIATUS. — Dull testaceous; head dark greenish; ely- 

 tra striate, and with small remote black spots. 



[Vol. V- 



