552 FAMILY XIX, COLYDIID.K. 



slightly iiiUToxNOv than apex. Elytra eciarsely granulate with traces of 

 strife lietwccii the rows of granules ; s])arsely iiubcsct'iit on the sides. I.eugtU 

 4 mm. 



Posey County; rare. April 12. Taken beneath bark of honey 

 loenst. Oeenrs from I^fissouri to Pennsylvania and Georgia. 



IT. Er'cicoNES Sharp. 1S04. (Gr., "beautiful + Hieones.") 



Differs fi-oni Si/ncJiifa unly in po.ssessing distinet, deep antennal 

 grooves along the lower margins of the eyes. One species is known 

 {'i-()m the State. 



lOfi") (.'ili.^jl). I'^reicoNKs MARGiNAHs Melsh., Proc. Phil. Acad. Nat. Sci., II, 

 1S44, 112. 

 Oblong-oval, de])ressed. Piceous, opaque; anteniue, legs and margin of 

 thorax reddish-brown ; elytra each with three or four small spots and a nar- 

 row undulate crossbar at apical third, also reddish-brown. Thorax more 

 than twice as wide as long, sides curved; ninrgins wide and flat, edges 

 finely serrate; disk granulate and linely pulicsi-ent. lOlytra with indistinct 

 rows ol' puiiclurcs: intervals flat, witli two irregular rows of punctures, 

 each puncture bearing a slini't, semi-crec1 bristly hair. Length 2..")-.3.5 mm. 



Marion -and ■\hmr( e counties; ,scai'(>e, Mai'cli 28-June 9. Taken 

 from lieiieath the barls of old ma|)le and heei'li slumps. 



III. DiTdMA 111. 1807. (Gr., "two -h joint.") 



Oblong flattened beetles having the antenna' 11-jointed, inserted 

 under the margin of the front, the last two .joints forming an abrupt 

 club. E.ves rather large and convex, coarsely granulated. One of 

 the six kno^xTi North American species has been taken in Indiana, 

 while another is hercAvith described for the first time. 



1056 (^2.^4). DiTOurA quadrtgitttata Say, .Tourn. Phil. Acnd. Nat. Sci,, V, 



1S2(;, 200; ibid. II, ;»;, 



Oblong-clongatc. deiiressed. Blaclvish-brown, subo|)aque; elytra eai-h 

 vs'ith three dull reddish sixits; one oblique, elongate, extending from humerus 

 to suture, a round one behind middle and a smaller snbsutural one near 

 apex; antennie and legs reddish-brown, 'riinrax broader than long, sides 

 nearly straight, disk flnely granulate and with four elevated lines, each 

 curved inwards in front, tlie two median ones united. lorraing an arch. 

 Elytra slightly wider than thorax, each with four discal ridges, the broader 

 intervals with two rows of coarse punctures. Length 2.,"i-:; mm. 



Throughout the State; frequent. ,\pril f)-June ."). Occurs be- 

 neath bark and logs. 



1057 ( ). DiTOMA GBANULATA Sp. nov. 



Elongate-oblong, subdepressed. Tiniform jiieeous brown; antennaj anil 

 margins of llioi'ax reddish-brown. Ninth ,1oint of antennie not wider than 



