58 PROCEEDINGS OF THE ACADEMY OP 



globose, punctate, striate, with a thick flavous pubescence con- 

 cealing the striiie. L. 1 line. Pennsylvania (Chevrolat). 



3. H. Mellyi, sp. n. 



Oblong parallel, clothed throughout with a cinereous pubescence, 

 and with sparse erect pale hairs ; antennae nearl}' contiguous, 

 long, second joint short, 3-11 elongate, not thickened ; thorax 

 subtransverse, faintly constricted towards the base; elytra parallel, 

 punctate striate, punctures hardly distinct. L. .10. Kansas 

 (Melly). Differs from both the preceding b}' the antemedial de- 

 pression of the elytra. 



Pachyonychus, Chev. 

 Differs from au}^ of the genera given in Clark's Catalogue by 

 the antennae Avitli joints 2-3 short, subequal, 4-11 thicker and 

 pubescent ; maxillary palpi inflated, posterior tibiae simple, with 

 one si)ur. 



P. paradoxus (Mels.)i Proc. Acad., iii. p. 163. 



Oblong, parallel, glabrous, shining, bright ferrugineous, elytra 

 deep brown with the suture ferrugineous ; autennai with joints 

 4-11 fuscous ; head smooth, thorax transverse, sparsel}' but rather 

 deeply punctate, front and hind angles acute, prominent, base 

 transversely impressed, excavate between the hind angles ; scu- 

 tellum smooth, tip truncate ; elytra rather deeply punctate striate, 

 interstices plane, smooth. L. .14-.15. Virginia, Pennsylvania. 



This is the first species described by any author under the 

 above generic name, which must thus be kept for it. 



Fhcedromuti Walej-housii, Clk., Cat Halt., p. GG, pi. iii. f. 1, is 

 entirel}^ unknown to me, but must be allied to the species just 

 described, from which it differs in having the posterior tibia' ex- 

 cavate externally, with no terminal spur, maxillary pali)i elon- 

 gate, etc. 



It is described as being black, glabrous, shining; thorax yellow, 

 impunctate ; sides angulate ; elytra punctate-striate, strite obso- 

 lete towards the ai)ex, antennic black, legs pale. L. 3 lin. South 

 Carolina (Waterhouse). 



Pachyonychus \\ paradoxtis, Clk., Cat. Halt., p. 61, t. 2, f. 7, is 

 also unknown to me. It differs by having the elytra coarsely and 

 densely punctate throughout, of a dark olive-green color, antennjB 

 with the base and apex pale, legs pale. Philadelphia (Chevrolat). 



