426 REVISION OF THE ELATERID.i: 



subangustato, dense punctato, carina angulari obliqua, elytris striis punctatis, interstitiis vix convexis, 

 parce punctatis, antennis pedibusque flavis. Long. - 4 — - 5. 



Mater cucullatus Say, Ann. Lye. 1, 264; Trans. Am. Phil. Soc. 6, 177. 



Athous hypoleucus Mclsheimer, Proc. Acad. Nat. Sc. 2, 155. 



Athous procericollis Melsheimcr, Proc. Acad. Nat. Sc. 2, 156. 



Athous strigatus Melsheinier, Proc. Acad. Nat. Sc. 2, 154. 



Pennsylvania, Maryland, and Ohio. The sides of the thorax in the female are broadly 

 rounded in front, while in the male, they are entirely straight. 



Say's original description does not appear to be sufficient entirely to identify the species, 

 but his subsequent remarks refer to a species having carinatcd thoracic angles; the type 

 in Dr. Harris' collection is a male of this species. The antennae in both sexes are longer 

 than the thorax. 



Mclsheimer's Athous strigatus is merely a very large female (*69 unc.) of this species, 

 showing no specific difference. 



6. P. fossularis, nigro-piceus, tenuiter cinereo-pubescens, tborace latitudine longiore, lateribus 

 parallelis antice rotundatis, confertim grossius punctato, pone medium utrinque profunde transversim 

 foveato, angulis posticis subrectis, carina angulari margini approximata fere indistincta, elytris striis 

 profunde imprcssis, punctulatis, interstitiis subconvexis vage scabro-punctulatis. Long. -45. 



One specimen, New Jersey, Mr. Guex. Easily distinguished by the rounded sides and 

 the coarser punctuation of the thorax, as well as by the two deep impressions half way 

 between the middle and the base. The specimen is apparently a female, as the antenna^ 

 do not extend beyond the base of the thorax, The form is more robust than the pre- 

 ceding or next species. 



7. P. equestris, atcr, subtiliter cinereo-pubescens, opacus, capite tboraceque dense punctatis, 

 rubris, hoc latitudine vix longiore, lateribus rectis, antice rotundatis, angulis posticis nigris, subrectis, 

 carina angulari margini approximata, basi medio nigricante, elytris striis punctatis, interstitiis scab- 

 ris. Long. - 57. 



One specimen, Georgia. The lobes of the tarsi are very narrow and short; the upper 

 surface of the head is red, but the mouth and organs are entirely black. The antenna' 

 are not longer than the thorax, and strongly serrate. 



** Antenna articulis 2 et 3 parvis cequalibus. 



X. P. posticus, piceus, fusco-pubescens, thoracc elongato, minus convexo, antice vix angustato, 

 lateribus rectis fortius marginatis, diaphanis, apice breviter rotundatis, disco dense punctato, postice 

 canaliculate-, basi tota testacca angulis posticis inflexis rotundatis, carina obliqua valde distincta, 

 elytris striis punctulatis, interstitiis planis confertim rugose punctatis, antennis basi pedibusque tcs- 

 taceis. Long. "48. 



Limonius posticus Melsheimcr, Proc. Acad. Nat. Sc. 2, 158. 



Pennsylvania. I have seen only the typical specimen in Dr. Mclsheiiner's collection. 

 The antennae arc a little longer than the thorax, tolerably strongly serrate, fuscous black, 

 with the first joint testaceous. Has very much the form and general appearance of Cam- 

 pylus productus; the lobes of the tarsi are very short. 



