'riiK LAiMi':hM(;().v'\ i;i;i;'n,ES. !)21 



ii.-ive been l.ikcii iti lii(li;i)i.i. while tlitise of two dthei's iiiny occur. 

 The folloAviiiii- is Ihc |)i-in('i|);il lilfi'.iturc ti-i'.-itiiii; of Ihc Xortli Amer- 

 ican representatives of the tribe: 



Horn. — "Description of the species of A|»li(Kliiis and Dialytes 

 of the TTnited States," iu Trans. Ainci-. Knt<»ni. Soc, III, 

 1870, ] 10-134. 

 JJorn. — "Synopsis of Ajtliodiini of tlic I'liilcd States," in Trans. 



Amer. Ent. Soc, Til, 1871, 2S4-297. 

 Jforn. — "A ]\Ionojji,rai)li ol' the Apliodiini inhabiting- the United 

 States." in Trans. Aiucr. F.nt. Soc, XTV, 1SS7, 1-110. 



KEY TO INDIAN.V GENERA OF AIMIODIINI. 



a. Mandibles visible beyond the clypens. VI. .Egialia. 



aa. Mandibles concealed beneath the clyitcns. 



1). Hind tarsi with triangular joints. VII. Psammodius. 



bh. Hind tarsi with elongate, usually cylindrical, joints. 



c. Head roughly granulate ; tiiorax transversely grooved. 

 d. Thorax without a marginal fringe of hairs, the grooves short, 

 confined to the sides ; one or more of the ventral segments cari- 

 uate. VIII. Pleueophorus. 



dd. Thorax with scale-like marginal hairs, the grooves entire; ven- 

 tral segments not cariuate. Rhyssemus. 

 cc. Head punctured or slightly rugose; first hve stri.^e of elytra not 

 reaching apical margin. 

 c. Outer apical angle of hind tibife prolonged, spiniform ; color 

 black. IX- At.enius. 

 ee. Outer apical angle of hind tibiae obtuse. 



/. Front tibife with upper teeth of outer margin obsolete. 



Dialytes. 

 //. Front tibijnp strongly tootliod on the outer margin ; elytra sim- 

 ply striate; color usually variegated. X. Aphodixts. 



VI. Ji^GiALiA Lat. 1807. (Or., "shore.") 



In this genus tlie inandibles and Uil)runi arc visible beyond the 

 clypeus when viewed from aliove; iiead mc^re or less granulate or 

 roughened with small tubercles; legs stout and strongly fossorial; 

 front tibiae broad and with large teeth on outer side. 



17.39 (5469). ^gialia confkrta Horn. Trans. Amer. Ent. Soc, III, 1871. 

 294. 

 Oblong, convex, slightly broader Ix'hind. Piceous, the elytra sometimes 

 reddish-brown ; antenn.-e paler. Head with rather coarse, close granules. 

 Thorax twice as wide as long, narrower in front, hind angles very obtuse ; 

 base curved, its marginal line distinct ; surface coarsely and sparsely punc- 

 tured, the sides smoother and with a small rounded pit. Elytra as wide at 



