OF NATURAL HISTORY. 6o9 



Body pale yellowish : antenniB blackish; three basal joints 

 honey-yellow, with a black line above : vertex with a black spot 

 thorax with two small dots, and an abbreviated line arranged tri- 

 angularly, black, and a lateral, somewhat larger, oblique, oval, 

 indented black dot : scutel black : elytra impunctured, destitute 

 of strias ; a common sutural black vitta, another in the middle, 

 somewhat narrower than the intervening portion, and a submar- 

 ginal one : pectus yellowish : postpectus and venter black, the 

 latter with yellowish margins to the segments : feet honey-yellow : 

 tibice and anterior and intermediate thighs with a black line. 



Length one-fifth of an inch. 



Very closely allied to A. alternata IHig-, the form and proper- 

 portion of the elytral vitta being the same, but that species is 

 somewhat larger, and is altogether destitute of the lateral thora- 

 cic impressed dots. 



3. A. CERACOLLIS. — White ; head black, elytra violaceous. 



Inhabits Mexico. 



Body white, impunctured ; head black, with an elevated line 

 below the antennse : antennae black, second and third joints white, 

 with a black line above : thorax immaculate : elytra violaceous, 

 burnished ; tarsi and tips of the tibiae black. 



Length less than one-fifth of an inch. 



Resembles the A. collaris IHig., (xanthomela/t Dalman,) but 

 is much more closely allied to A. collata Fabr. It is somewhat 

 doubtful if it be a distinct species ; but as I possess specimens 

 uf the latter from Pennsylvania, Missouri [201] and Florida, all 

 correspond in having green elytra, white front, and other dis- 

 tinguishing traits, I have ventured to assign it a distinct name. 



EROTYLUS Fab. 



E. 4-PUNCTATUS.— Testaceous, beneath black : thorax with 

 four black dots: elytra trifisciate with black. 



Inhabits Missouri. 



Erotylus A-pnnctatus? Oliv. Enc. Meth. 



Head black : thorax testaceous, with an arcuated series of four 

 subequal black dots : scutel black : elytra testaceous, with regu- 

 lar series of impressed punctures, an interrupted band at base 

 composed of a large common spot, and a smaller longitudinally ob- 

 1835.] 



