iiir; I'l^i'Mi Aciions divinu ui:1':ti,I':s. 221 



L;ike. J.;i.p(»rle iiii.l St.ii-kc counties; scarce. May 28-Aiigust 2(.). 



//. l())i'lir(isHS Lee., is; known from N'cw .IcrscN- and Lake Su- 

 jici'ioi". 



Tribe II. COIA'MBETINI. 



This Irihe includes divinu' beetles of incdiiun size or above, hav- 

 iuii- tilt' l;iisi dislinclly n-jointed, those of the males with tlie dihited 

 joints oblong. Nine o-euera are known to be represented in the 

 State, while a sintrh^ species of another may occur. 



KEY TO INDIANA GENERA OF COIA'MBETINI. 



(/. Seniiiueiulii-:ninus side pieces of first dorsal segment smooth; smnller, 

 rarely 11 mm. 

 h. Hind tarsi willi nne(|nal claws. 



c. Spine of pvosrernum not sulcate: elytra with a pale imliescoiit si)ot 

 on the inner face at apex. X. Ir.Yinxis. 



cc. Spine of prosternum deeply snlcate: elytra without pale spnt. 



XI. Matus. 

 Iif). Hind tai-si with claws eqnal or nearly so. 



(1. Last joint of paliii emari;-inate : prosternal iirocess much swollen 

 along the middle. XII. Coctotomus. 



(1(1. Last .ioint of palpi normal, not dilated or emarginate. 



c. Elytra deeply striate; prosternal spine but little swollen at mid- 

 dle. XIII. COPEIATUS. 



ee. Elytra not distinctly striate. 



/. Thorax not margined; elytra l)enoath the lens slmwing nuiner- 

 ons very tine elongate stria-: prosternum n-it snlcate. 



XIV. AGABET! s. 

 ff. Thorax margined at sides. 



//. Elytra with very fine longitudinal impressions; hind legs 



short and stout; wing of metastenmra linear, strongly 



cuiwed. XV. Ita'biosoma. 



(J!/. Elytra without fine stritie ; hind legs of medium length and 



size; wing of metasternnm wedge-shaped. XVI. Agabts. 



11(1. Semimembranous side pieces of first dorsal segment rugose ; larger. 



usually 12 or more nun. 



//. I'liper surface consi)icii(insly reticulale: thoi-ax not margined on sides. 



SCUTOPTERCS. 



////. TTpjier surface not reticulate. 



/. Elytra smooth, or in the female witli short coarse lines; metas- 

 ternnm witli a broad, dee]' gro<.ve: thorax margined. 



XVII. KiiA.xns. 



//. Elytra with fine transverse wrinkles; metasternnm wilh a narruw 



indistinct groove; thorax not margined. XVIII. ( "oi vMrnri is. 



The rni;-ositics rercned to urder (/a in Ihc aboxc table are near 



the lii-sl spii-ach'. and Itie .'Ivlr nnsi be i-aised to see llieni |)rop- 



erly. 



