UNITED STATES. 77 



dish, sometimes slightly varied with whitish, parti- 

 cularly behind, and the lobate divisions of the pos- 

 terior margin are sometimes whitish above, and 

 the disk is obsoletely lineated with black. 



4. I. *enaticu$. Body oblong-ovate gradually nar- 

 rowed before, sides hardly arquated, with distant 

 punctures, those behind more deeply impressed, pos- 

 terior margin with ten or twelve impressed lines which 

 are abbreviated by a sub marginal impressed line, two 

 abbreviated lines before ; head, posterior edge trans- 

 versely rectilinear, angles extended backward ab- 

 ruptly, and subacute ; rostrum rather short ; palpi 

 oval-orbicular. 



Found in the Southern States ; the colour is red- 

 dish or ferruginous, with acute black lines. 



5. I. ^variabilis. Body oblong-ovate, gradually 

 attenuated before ; sides hardly arquated ; a few re- 

 mote deeply impressed punctures not more numerous 

 behind ; posterior margin with about twelve im- 

 pressed, abbreviated lines ; a lateral, impressed, 

 punctured, submargiual line, obsolete behind ; two 

 deeply indented, abbreviated lines before; head, 

 hind edge rectilinear, angles abruptly a little ex- 

 tended backward, acute ; rostrum rather short ; palpi 

 ovate; colour reddish or ferruginous varied with 

 white, incisures of the feet white. 



"Very much resembles the preceding in form'; the 

 w 7 hite of the back is more or less reticulated, and the 



