THE FIKKFLJKS OH LKillTMING BlUiS. 



887 



at present unreeoii'nized by eiitDiiHjldijists. 1ml wliidi is jji-ohahly 

 tliis species. He gives the length as less than oiie I'ourth of an iAch 

 and there ai'e s()in(> minor details of color which do not agree with 

 the s]ieciiiiens at hand. 



XXIT. Drri-niNrs Lee. ISIil. (Cr.. "twice + to eut or split." 



Anteninv stout. coni])ressed and serrate; sides of thorax hjl)ed 

 in such a manner as to presiMit two notches, one near the tip formed 

 by the thickened apical mai'gin, the other between two narrow h)bes 

 or processes which extend outward near the base. In our species 

 the base of thorax is strongly mai-gined and its disk excavated. 



KEY TO INDIANA SPECIES OF UITEMNUS. 



a. Hind lobe at side of thorax very little wider than the one before it; 

 sniiillcr. not over 3.5 nun. 150S. bidentatus. 



(1(1. Hind lobe at side of thorax moi-e than twice the width of the one be- 

 fore it; larger, 4.5-5.5 mm. 1599. latilobus. 



1598 (49(')9). DiTEMNUS bidentatus Say, Journ. Phil. Acad. Nat. Sci., V, 



1825, l(i9 ; ibid. II, 278. 



Oblong, sparsely clothed with grayish i)ubescence. Black ; thorax dull 

 .vellow. Second .joint of antennae not dilated, about one-third as long as 

 third, which is e<iual to fourth. Thorax slightly wider than long, the a]>- 

 ical lobe of sides well defined, middle and hind lobes narrow, parallel. 

 Length 3.5 mm. 



Lake, Laporte, Spencer a!id Dubois counties: scarce. Mux 1'2- 

 Jidy 25. Occurs on low herbs along roadsides. 



1599 ( ). Ditemnx's lath-obis sj). nnv. 



Elongate-oblong. Black or ])ic- 



enus. feebl.v shining; tlior.-ix rcddish- 

 .vellow. Second .ioint of antenn;e 

 rounded, not pubescent, less than 

 one-fourth the length of third, the 

 latter eciual to fourth. Thorax one- 

 third wider than hnig. the base more 

 strongly margined than in hidcnta- 

 tus; basal side lobes prominent, the 

 front one narrow, its ai)ical half a 

 little widc^r :ind bent slightl.v down- 

 ward and backward, the tip oblique- 

 ly truncate; the hind one more than 



twice as broad and a little slua-tcr. cunc.ive. its apex rounded and bent for- 

 ward or slightly toothed so as to tou<-h the front lobe, leaving only a small 

 rounded notch between the two, its hind margin overlapped at base by the 

 hind angles of thorax ; median impression of disk distinctly larger than in 

 hidviihitiif!. its limits inarUcd by four sliglit tubercles, its margins indistinct. 

 Elytra finely scal)r(pus, sjiiirscly and very finely pubescent. Length 4.5- 

 5.5 mm. (Fig. 32G.) 



shows natur.il k'ligth. HJiiKiiuil.) 



