52 ENTOMOLOGICAL NEWS. [Feb., '04 



Notes on Colcoptera. 



By Charles Dury, Cincinnati, Ohio. 

 On Melasini. 



I have taken here from time to time specimens of a Nema- 

 todes that was locally associated with N.atropos and N. pene- 

 trans. Its elytra and body beneath are black. Head and 

 thorax reddish brown covered with golden hairs. Body shorter 

 and stouter than atropos, with the thoracic fovese round and 

 much deeper. Antennal joints 4 and 5 short, not longer than 

 wide. Joints 6, 7, 8, 9, 10 and 11 longer than wide. It has 

 quite a different facies from either atropos or pe7ietrans, and 

 will come between them in Dr. Horn's table, given in his ex- 

 cellent monograph of the North American species of Eucnemini 

 (Trans. Amer. Ent. Soc. 1886, p. 5.) In this paper Dr. Horn 

 makes mention of such a species. Mr. Fleutiaux of Paris has 

 suggested that it might be Bonvouloir's Nematodes collaris. 

 After a comparison of the specimens with his ( Bon v. 's) descrip- 

 tion of collaris, I am satisfied that it is that species. Bonvouloir 

 gives Brazil and ' ''I^a. ' ' as the localities, though mentions La. as 

 doubtful. The three species of Nematodes we find here, have 

 the same habits. They run rapidly on the trunks of dead 

 Beech, Elm and Maple trees, hiding under the bark and in 

 crevices. When disturbed they drop to the ground. They 

 emerge from round holes which they cut through the wood. 

 In his classification of this sub-family (Societe Entomologique 

 de France, LXX, 1901), Mr. Fleutiaux uses MelasbKz in- 

 stead of Eucnemi7icB. In revised list of Coleoptera observed 

 near Cincinnati, Ohio (Journal Cin. Soc. Nat. Hist. XX No. 

 3), I have enumerated twenty-five species of this sub-family, 

 the result of over twenty-five years' collecting. I thought I 

 had taken all the local species, but was surprised June 10, 

 1903, to find a large well-marked species that had hitherto 

 escaped observation. It proved to be Hylochares nigricornis 

 Say. They were cutting their way out of the trunk of a 

 huge dead White Elm, ( Ulniiis americana~) making round holes. 

 The area of emergence was about 6 x 24 inches, and from this 

 spot I secured 107 fine specimens. The species is well de- 

 scribed in Horn's paper referred to, but the extreme of size in 



