156 DESCRIPTIONS OF AND OBSERVATIONS ON 



converging to the middle line, and directed forward : antennx black- 

 ish ; basal joints obscure piceous : palpi dull j^ellowish : thorax with 

 the hairs converging to the middle line and directed forwards : elytra 

 dull yellowish, darker on the base, suture and outer margin ; the hairs 

 somewhat arranged so as to resemble striae : feet honey -yellow. — 

 Length about one tenth of an inch. 



11. A. verna. Black ; distinctly punctured ; inner top of the elytra 

 dull yellowish. — Inhab. Missouri. 



Body with scattered hairs : head polished, with sparse irregularly 

 arranged, rather large punctures : antennae of the basal joints hardly 

 tinged with piceous: thorax polished, with numerous, rather large, 

 unequal and irregularly scattered punctures ; middle line destitute of 

 punctures : feet black-piceous. — Length about one tenth of an inch. 



The more conspicuous and irregular puncturing will distinguish 

 this species from the above described. 



12. A. exigua. Black; punctured; antennae and feet hardly tinged 

 with piceous — Inhab. Indiana. 



Body black, a little ipolished, with short hair; punctures numerous, 

 somewhat regular : antennse at base, and palpi very slightly tinged with 

 piceous : elytra a little indented at the scutel ; at tip the common eraar- 

 gination obtuse, not profound: feet black-piceous. — Length one-twen- 

 tieth of an inch. 



13. A. minima. Black; elytra and feet dull yellowish. — Inhab. 

 Indiana. 



-Borfy black, with numerous prostrate hairs: antennx towards the 

 base with a very slight tinge of piceous: elytra dull yellowish: tergum 

 dirty yellowish at tip: feet whitish-yellow, dull. — Length nearly one 

 tenth of an inch. 



Var. a. Thorax nearly the colour of the elytra. 



14. A. biiohata. Dark reddish brown; thorax subcordate, canali- 

 culate, feet pale. — Inhab. Missouri and Indiana. 



Body very dark reddish brown, with numerous regular punctures : 

 antennse, two basal joints paler : mouth beneath, excepting the termi- 

 nal joints of the maxillary palpi, pale testaceous : thorax rounded be- 

 fore and narrower behind ; very deeply canaliculate ; groove abruptly 

 abbreviated on the basal margin : elytra at tip and sides with smaller 



