THE lejVP beetles. 1219 



LXTX. Mantuka Stephens. 1831. (A mythological name.) 



To this genus belongs a single small, elongate-oval, brownish 

 species, having the antennae slender, half as long as body, the outer 

 five joints abruptly broader; thorax with a deep longitudinal basal 

 impression each side opposite the middle of each elytron and ex- 

 tending nearly half way to apex; first ventral segment nearly as 

 long as all the others ; tibiae each with a small terminal spur ; claws 

 simple. 



2256 (7032). Mantuka floeida^-a Crotch, Proc. Phil. Acad. Nat. Sci., 

 1873, 73. 

 Elongate-oval, moderately convex. Brownish, with a bronzed lustre; 

 elytra indefinitely paler on apical third ; antennae brownish, the basal joints 

 paler ; legs reddish-yellow, the hind femora darker. Thorax nearly twice 

 as wide as long, widest at base, gradually narrowed in front; surface 

 coarsely, deeply and rather closely punctate, more sparsely between the 

 basal depressions. Elytra scarcely wider at base than thorax, umbone not 

 prominent, disk with ten rows of rather fine, deep punctures; intervals 

 broader than stri®, smooth. Length 2 mm. 



Steuben, Llarion, Putnam, Orange and Posey 

 counties; scarce. April 22-July 14. Taken by 

 sifting and s^veeping. 



LXX. Systena Chev. 1834. (Gr., "com- 

 pressed.") 

 Small elongate, usually subdepressed species, 

 having the antennse slender, half as long as body, 

 slightly thicker toward the tip, the fourth joint 

 longer than the third or fifth. Thorax broader 

 than long, very little narrowed in front, margins 3^^^* f/°- ^^'^ ^^^^ 

 very narrow, hind angles acute, disk but vaguely CMtteDden m Buii. 43, u. s. 

 impressed in front of base ; front coxs narrowly ^'"^ ^"''^ 

 separated, the cavities closed behind; hind tibiae grooved on the 

 outer edge and carinate, terminated by a single spur ; claws appen- 

 diculate. Five species have been taken in the State. 



KET TO INDIANA SPECIES OF SYSTENA. 



a. Elytra wholly piceous or dark brown, slightly bronzed. 



6. Head entirely black. 2257. hudsonias. 



66. Head dull reddish-yellow. 2258. frontalis. 



aa. Elytra dull yellow or with yellowish stripes. 



c. Elytra piceous, with a yellow stripe reaching nearly to apex ; gense 

 (cheeks) very coarsely punctate. 2259. elongata. 



cc. Elytra pale, dull yellow, sometimes with a paler median stripe; genae 

 smooth. 



