124 MISCE'LLA NEOUS FOREST INSEC;YTS.

impression long, shallow, and narrow, and the strial punctures of the elytra deep and coarse.
 There is considerable variation, more especially in size, in the acuteness,-- of (lhe po(sterior angles of the protliorax, in the convergence o)f its side margins posteriorly, and in the elevation of the elvtral iit ersl)aces.
 Matm(ifi erailtfl) d .-A series of 60 specimens. The species is distributed throughout, the eastern United States.
 Lyctus suturalis Faldermann.

 Lyctuis suturalis Faldermann, 1837, p). 225; Reitter, 1878, p. 196; Reitter, 1885,
 p. 99; Reitter, 1906, p. 423.
 Lylqusi dleyrolici Tournier, 1874, p. 411.
 Thiis species is related to lieais Goeze in prothoracic structure, but is wholly different in elvt~ral structure, resembling, in this respect, planiiicollis Le Conte, though quite different in th at f or the most part the strive are made up of but a single row of exceedingly fine punctures.
 The spec(-imiens are quite constant in character, though there is considlerable variation in the prominence and roundness of thie anterior angles of the prothorax.
 ilfatu~ial exantind.--A series o-f four specimens from Mr. Better. Thie species occurs in the Caucas;us. lUp to the present time it hias not been recorded from tbe 11 iitel 'States.
 Lyctus cavicollis Le Conte.
 Lycls car?'ollis Le Conic, ISO;. p). 103; Casey, 1890. p. 324; Casey, 1891, p. 13.
 This species is vr ishc, an sraiysep)arated from the other
spIecies by t he shinig narw Iuq alrt e, subconvex protlhorax within the si(les, parallel, the po~steior angles sharply rectanguldar, an(l the form general' ly stout. It is not closely allied to any other specRis. It. resembles jdiMM icl Le Conite i el'Nt ral struct ure, but the prothiorax is totally different. There is son)ii variation in size, but, tHie stnit~Utuul (h'ails are quite (015t anit
 Material CUuid-Aseries of 25 specimens, till from California.
 Lyctus planicolis Le Omte.
 LycI pfioihs Le (Conte, 158, 1). *74; L e Conte. IS8;(, p. 103; Igs,1883,
 pp. .-) 58); Ca .-:y, 1890, p., 324;., 'ae,189)1, 1). 13.
 (?)Ly1iu8 Wutiuis\all, 1832, 1). 1(1.
 Ibissp~e.-cis (xtrmlN Nni1)l('; perh-1aps Ifl()I'C So thlan anly others of t lie grenus. I iivd1l-aneinlng i ro 2..5 to 5.5 mm11. Th'le
protliorax v-aries fon broader tHan1 long(, wN11ithte side mar11ginls !sI roughJ vsIlua Ie ant fJuVre tps eiry to stubqu1adrate and( tHie sides paale ,hw(Vawasa widle an1te(riorly as H ie elyt ma1
 at ll"1e, lieat ior mlesalas ouddIhepoti'o mevm S