136 FAMILY II. — OAEABiaqC. 



iiiijircssiiiis loiiu. <-\irv(Ml riiii shalluw, not i)Uiicture(i. Elytral stride very 

 lint', iml iniiictmvd; iiilci'vals Hal ; dorsal punctures four, the first and sec- 

 ond on third siria, the olhcrs on second stria. Length T-T.n nun. 



Lake County; scarce. About twenty specimens taken by Wol- 

 cott neai- Wolf Lake. :\raTeh 26. 



XXXIIL Olistiiopi'S Dej. 1825. (Gr., "slippery + foot.") 



Small piceoiis or Ijrownisli beetles of the tribe Platynini, having 

 the claws of the tarsi entii'e and tlie mentnm Avithout a tooth. But 

 two species are as yet known in the United States, one of which oc- 

 cni'S in In.dijnui. They are lirierly treated by 



LeCoNfc.—Vroc. Phil. Acad. Nat. Sci., 1854, 58. 



//or».- Bnll, Brook. Entom. Soc. V. 1882. 63. 



■=L':'.7 (S:i!l). Oi.isTiioin s I'AKM.v'iis Say. Trans. Anier. I'hil. Soc, II. 1S2.">. 

 4!>: ihid. II, 474, 537. 

 Kather broad, sulidejiressed. Head and th(.rax bhick ; base of an- 

 tenna'. ed.LTe of thorax. Ic,u:s and liasal iialt of elyt^ra dull browuish-yellow ; 

 a|iical portioii of elytra darker, 'i'hora.v I'ounded. onedialf wider than long, 

 sides broadly rounded in!;> l)ase, inar,L;in very narrow, basal impressions 

 small and narrow. Klytral stria' rather tine, not jtunctured; intervals 

 sli^^dilly convex, liie tliii'd with lliree vei'y small dorsal punctures. Length 

 7-7..") nun. 



Southern lialf of State, scarce: Lake ('(mnty only in the north. 

 January (i Xovember 7. The elytra are sometimes almost wholly 

 brownish-yellow. 



XXXIV. Pp:rigona La}). 1837. (Gr., "around f- angle.") 



Very small piceous or i)rownish beetles, having the labrum 

 scpiare and f1a1 ; ineiituin deeply etnaroiiiate and without a tooth; 

 antenna" rather slont beyonc' the third joint, which is of the same 

 length as the se:-ond. I'lie ovpus is ttcaled liy 



J/oni.—Tvnus. Aiiier. Ent. Soc.. XIX. 18!)2, 14. 



One sjx'cies has bi'eii takc'i in Indiana, while another may occur. 



KEY TO SPECIES OF PEKIGONA. 



II- Head alone piceous; elytra slightly olijong. nigkiceps. 



"". He;i(l and thoi-a.\ piceous; elytra oval and more convex. 



238. PALLIPENNJS. 



/'. iiu/ncfjts Dej.. length 2.5 mm., is recorded from Cincinnati. 



L'.'l.s (;i2S(t). I'KHirio.XA 1' A I I i ri;,\ .M s Lee. '!'r;Mis. .V r. I'hil. Soc, X, 1853, 



38(j. 

 Oblong-oval. lle;id and tlieiax piceous; elytra dull reddish-brown; aJi- 

 lennu' and legs i)ale yellow. '|'h..ra\ sub<|uadi-ate. slightly wider than long; 



