102 . ACADEMY or NATURAL SCIENCES 



TACHTNUS Gravenh. 



T. ATRICAUDATUS. — Rufous, impuiictured ; head and middle 

 of the antennae and postpeetns black j elytra behind, and tip of 

 the abdomen, dark blue. 



Body yellowish-rufous, impunetured, with few hairs ; polished : 

 head black : labrum and mouth testaceous : antennae testaceous ; 

 from the fifth to the tenth joints inclusive, black : thorax with a 

 few indistinct hairs : elytra with a large deep blue spot on each? 

 the anterior edge of which curves from behind the humerus, to 

 behind the middle of the sutural margin ; a subsutural series of 

 remote punctures, and a series exterior to the middle : postpectus 

 black, with large, slightly impressed punctures : feet pale testa- 

 ceous : abdomen with a few hairs, and distant, larger black ones 

 on the posterior margins of the segments; terminal and anal seg- 

 ments deep blue. 



Length nearly one-fifth of an inch. 



Found on the Konza river. 



[Belongs to Boletohins ; previously described as T. cinctus 

 Grrav. — ^Lec] 



ANTHOPHAGUS Gravenh. 



A. BRUNNEUS. — Reddish-brown ; feet and abdomen paler ; an 

 impressed thoracic line and dot at base. 



Body reddish-brown, punctured, with numerous short hairs : 

 head inequal, indented between the eyes and between the anten- 

 nae : antennae, palpi, and feet testaceous : mandibles piceous at 

 tip: thorax [159] densely punctured, subrotund ; posterior an- 

 gles rectangular ; a dorsal impressed line, terminated on the pos- 

 terior submargin by an impressed dot : elytra densely punctured, 

 posterior lateral angles rounded, sutural tip acute : abdomen pale 

 reddish-brown, segments margined round with dusky, a dusky 

 spot near the tip of the tergum. 



Length less than one-fourth of an inch. 



On the banks of the Missouri above the confluence of the Platte 

 river. 



[Vol. III. 



