THE SITIXrxn rCINGUS BEETLES. 493 



,.,il;i ri^vd. I'uniiiim' ;i ioosc. slciKici' i-!iil»: simiI rl luiii usually wniit iiii^ 

 but when pi-('scii1 l»ro;i(lly I i-i<iii^iil;ir. 'riiirtccii noiniiKil sixM-iiiS 

 from the rnitod States are recognized 1)\- Casey. Of these six are 

 known I'l-oiu [ndiana. 



Ki:v lo iMiiA.NA sri:( MIS OK i;,i;(i( i.KA. 



(/. Sculelhiiii uul visible. 



I). Larger species, not less than l! iniii. in IniL^lii. 



c. Sides of (lidrax fei'My and evenly cnrved when vlewi'd fi-oni (lie 

 side; basal marginal stria (if elytra entire. 

 <l. Third anlennal Jeint very Inng. slender, snbe(|nal to fourth; ely- 

 fra sparsely but distinctly punctate. 1>4;?. ( oncolor. 



(/(/. Third joint nuicli shorter and liiicker; form less broadly oval; 

 elytra smooth. *>-ti- congknek. 



cc. Sides of thorax strongly bent downward behind the middle; basal 

 stria of elytra broadly interruiited ; third anteiuial joint loug and 

 slender. 94.-). deflexa. 



hh. Smaller species, never nuich e.\c(H'ding l.r. nun. in length: narrowly 

 oval; third autenual Joint not longer than fourth, 

 e. Elytra not punctate. 



f. Length 1.6 nnn. ; epiniera of nii'sosteruuni extending two-thirds 



to coxa'. SI'ECl- LIFER. 



ff. Length not over LR mm.; mesosternal e|iiniera longer and nar- 

 rower. •'"^*'- Al'ICALIS. 



ce. Elytra sparsely, coarsely and shallowdy punctate. 



947. PUNCTIPENNIS. 



iKi. Scutellum visible, very minute and transverse; length less than 1.3 mm. 



a. Hind angles of thorax noianally acute; color reddish-brown to pic- 



eous. 9^8- Pit^EA. 



g<j. Hind angles of thorax obtusely truncate; color deep black. nana. 



1>43 (2978). B.EOCERA concolor Fab., Syst. Eleut., II, 1S01. ~u(l 

 Oblong-oval, broad, strongly convex. Black, high- /^ 



ly polished; legs, antenna? and tips of elytra and ab- 

 domen reddish-piceous. Thorax three-fourths wider 



than long, apex one-third as wide as base. Scutellum 



wanting. Elytra barely as loug as wide, scarcely 



twice as long as thorax, broadly truncate at apex; 



sparsely and coarsely punctate. Length 2.7 nun. (Fig. 



175.) 



Thronghotit the State; frequent. March 25- 



Septeniber 25. Occurs on fungi. ,,i^ 1-5 x "10. (OriginaU 



944 (98r>4). li.KOCERA congener Casey, Ann. N. Y. Acad. Sci.. VII, 1893. 

 517. 

 Rather stout, oval. Black; legs and anteniue pale reddish-brown. An- 

 tenuiB shorter than head and thorax, third joint much sliorter than second, 

 three-fourths the length of fourth. Thorax and elytra much as in concolor, 

 from which it differs chiefly by its smaller size and antennal structure. 

 Tjength 2 mm. 



