OP PHILADELPHIA. 239 



Taken near tlie village of the Konza Indians. When dry, the 

 head and thorax assume a light ferruginous color. 



TRIDACTYLUS Oliv. 



T. APICALIS. — Black, varied with white ; wings edged and 

 tipped with blackish. 



Inhabits Southern and Western States. 



Body deep black : head with a line each side, passing over the 

 eyes, two spots at the superior base, and a line on the vertex fur- 

 cate before, whitish : thorax margin and several abbreviated lines 

 on the disk, white ; feet banded and spotted with white, posterior 

 thighs trifasciate with white ; posterior tibiae nearly rectilinear : 

 elytra, exterior margin and common spot behind the middle, 

 white: tergum fasciate with white. [311] 



Length more than one-fifth of an inch. 



This species is numerous on St. John's river, in East Florida 

 and on the Missouri, as far as Council Blufi". It is always found 

 on the moist shores not far distant from the water's edge. 



[This is Xya apicalis Burm. Handb. 2, 2, 741. — Uhler.] 



PENTATOMA Oliv. Latr. 



1. P. ARBOREA. — Brownish-cinereous, punctured ; clypeus 

 emarginate and bidentate ; thorax dentate and with a prominent 

 truncated spine behind each side ; feet annulate. 



Inhabits Missouri. 



Body brownish-cinereous, with numerous black punctures ; 

 head with a longitudinal obsolete elevated line, and an abbreviated 

 one each side of its middle : clypeus emarginate at tip, lateral 

 edge terminating in an angle near the tip : antennae, base of the 

 second joint pale : thorax unequal before, dentated each side ; 

 teeth irregular, unequal, acute; posterior angles extended into a 

 prominent, dilated, slightly reflected, truncated projection, which 

 has two or three small teeth : hemelytra with the central nervure 

 conspicuous ; nervures of the membranaceous tip black, and with 

 black arborescent lines in the interstitial spaces : wings dusky ^ 

 iridescent ; nervures black : feet black : thighs pale at base and 

 annulate with pale near the tip : tibia annulate with pale : tarsi 

 second joint pale : tergum deep purple, black impunctured ; [312] 

 margin brownish cinereous, punctured, varied with transverse 

 1825,] 



