DSS FAMILY L. S('AliAliJEin/1i;. 



confused, especially toward the base. Antennal club as long as stem in 

 female, one-half longer in male. Length 14-17 mm. 



Lake, Laporte and Posey counties; r:irc. June 0- August 10. 

 Occurs in sandy localities. 



Tribe II. DYXASTINI. 



^Icdium-sized to -^-ery large robust forms, having the labrum 

 usually invisible ; mentum narrowed and subacuminate, rarely trun- 

 cate, in front; tarsal claws equal, not toothed. In some genera the 

 males have the head and often the thorax armed with horns. To 

 the tribe belongs our largest Indiana beetle and in the tropics the 

 largest of known beetles. Seven of the eleven i^enera comprising 

 the tribe are represented in Indiana. 



The most available literature relating- to the North American 

 genera is as follows : 



L(('o)ite. — "Notice of three genera of Si'araba^idte found in the 

 I'mted States," hi Proc. Phil. Acad. Nat. Sci., VIII, 1S56, 

 10-24. Treats of the genera Liinniis and Aphonus. 

 Horn. — "Descriptions of New Coleoptera of the United States 

 with Notes on Known Species," in Trans. Amer. Ent. Soc, 

 III, 1871. The o-eniis f'urloccpliahi is treated on pp. 334- 

 337. 



Hayn. — "Synonymical Notes and Descriptions of New Species 

 of North American Coleoptera," in Trans. Amer. Ent. Soc, 

 V, IS'75, 126-156. Synopses of the genera Ligi/rus and .s'/ra- 

 1(V(jus are given on pages 143-117. 



Born. — "Contributions to the Coledi^tera of the United States, 

 III," in Trans. Amer. Ent. Soc. VIII, 1880, 139-1 .i4. This 

 includes a table of species of the genus Phihurux, pp. 

 147-148. 



KEY TO I,\nT.\X.\ GEXER.V OF DTX.VSTIXI. 



u. Body convex, usually more or less oval; labial palpi inserted at the 

 sides of mentum. 

 h. Head and thorax unarmed in both sexes. 



c. Alandibles narrow, scarcely curved; color pale brownish-yellow. 



XXIX. C'YCI.OCECIIAI.V. 



cr. Mandibles broad, rounded on the outer side and curved: color pic- 

 eous or black. XXX. Dyscixinrs. 



W). IIc.Hl ,,r thorax (sometimes both) armed, or at least bearing n tuber- 

 cle, in both sexes. 

 ih Size over :!ii mm.; color piceous „r dark reddish-lirown ; males 

 with the front feet not elongated. 



