~^-i I wiii.^ \iii.- -sii.i'iiin.i';. 



Thorax Diie-half wider than long, sides feeljly c-urved. liind angles obtusely 

 rounded: disk coarsely and very densely punctate. Elytra as wide at base 

 as rlK.rax. thence feebly tapering to apex, sides nearly straight; disk dense- 

 ly, tincly and rather roughly punctate. Male with Ihree Joints of front 

 tarsi broadly dilated, middle tibia' strongly ciii'ved, iiiud ones straight. 

 Length 'J.'t nnii. 



Clark and Posev counties: scarce. April 21-I\lay 6. Taken by 

 sifting. 



Tribe I\'. A.\1S( )T( ).MIM. 



This tribe cnniprises species of small size, having the body oval, 

 convex, sonietitnes capable of being contracted into a hemispherical 

 ball; front cox:b conical, contiguotis, prominent, with trochantin, 

 the eoxal cavities narrowly closed behitid; hind coxie contiguous: 

 al)domeii with six segnients. Th(\A- live for the most part either in 

 decomposing fungi or under the bark of dead trees. Seven genera 

 are known to be represented in Indiana, while two others may 

 occttr. 



KEY TO IxXDlANA GKNKI5A OF ANISO lO.M 1 M. 



(I. Head without antenual grooves beneath. 



h. Hind tarsi five-jointed: niesusternuni iK.t carinate; antenual club tive- 

 .ioiiited. Hydnoijiis. 



hh. Hind tarsi with less than Hve joints: niesosternuni carinate. 



c. Antenual club live-jointed; length 2. .1-4 mm. VIH. Anisotojia. 

 (■('. Antemial club tliree-joiuted. clurgaU". loose: smaller, not over 1' 

 mm. ; elytra \\ith hue transverse w rinkles. IX. Colenis. 



(/(/. Head with distinctly limited antenual gVK.ves. 

 (/. Antenual club more than three-jointed. 



c. Antenual club five-jointed, elongate. (Fig. 4. Xo. (1.) 



/. l''<.rm l)i-i;a(lly (jval m- hemisijherical, convex: frontal .suture well 

 marked: tarsi unlike in the sexes, i)rosfernum short in front 

 of c-o^!e. ' X. LiouKs. 



//. Fnnn (ibli:ng-elliptical. subdepressed ; fnmtal suture wholly lack- 

 ing: presternum long before the coxa\ XI. Stetholiodes. 

 cc. Antenual club four-jointed; number of tarsal joints the same in 

 both sexes. XII. Cyrtisa. 

 '/'/. .\iitcimal (lull three-jointed; tarsi unlike in tiie sexes. 



//. Autenna' ten-jointed. Isoplastus. 



(/(J- Anfeiuh-e eleven-jointed. 



li. Hind tarsi Inur-jiiiiited ; mesosternum not carinate l)etween the 

 middle coxa-: Ixxly strcmgly contractile. 



XIII. Agatiiidium. 

 ////. Hind tai'si tliree-joiuted; mesosternum strongly carinate. 



XIV. Aglyptus, 



