258 ACADEMY OF NATURAL SCIENCES 



Near Engineer Cantonment on the Missouri. 



T. LIMBATA. — Body deep black ; side edged with white. 



Inhabits Missouri. 



Body deep black, punctured : a white lateral line from the eye 

 to the tail : head before and beneath with minute white points : 

 eyes whitish beneath : thorax with a transverse series of four 

 [341] larger impressed punctures, the exterior ones with a ru- 

 fous spot, and i*esembling stemmata ; a white lateral line inter- 

 rupted by a yellow spot over the interval between the two ante- 

 rior pairs of feet : scutel impunctured, two rather large impressed 

 dots, and a transverse impressed line on the middle ; posterior 

 portion transversely rugulose : hemelytra with large distinct, 

 impressed punctures : wings whitish ; nervures and base black : 

 feet, spines of the posterior tibiae not very prominent or rigid. 



Length more than a quarter of an inch. 



Near Engineer Cantonment on the Missouri. 



3. T. MIXTA. — Dull blackish-brown ; elytra with obsolete 

 minute pale punctures ; tergum deep black ; feet annulate with 

 pale spots. 



Inhabits Missouri. 



Head rugose, the lines somewhat longitudinal : stemmata 

 rufous, placed on the anterior margin ; first joint of the antennae 

 pale at tip : labrum irrorate with pale, and two larger spots at 

 base : thorax transversely rugose and with an anterior series of 

 punctures, lateral edge behind the eye white : hemelytra densely 

 rugose, with a few pale, minute spots on the nervures, and rather 

 larger ones on the inner and terminal margin ; two abbreviated 

 whitish lines on the humeral origin of the nervures ; (when 

 viewed towards the light, the whole wing is irrorate with pale 

 hyaline points :) wings blackish, emarginate at tip ; nervures 

 fuscous : [342] tergum deep black, edge of the segments pice- 

 ous : pectus deep black, segments generally edged with whitish : 

 feet, anterior pairs annulate near the tip of the thighs with 

 whitish spots ; tibiae with two or three whitish spots ; posterior 

 pair of feet paler beneath: venter irrorate with pale points, lateral 

 segments with a longitudinal pale line on each, and pale inferior 

 edge ; caudal segment with large, dense, pale spots. 



Length less than three-tenths of an inch. 



[Vol. IV. 



