110 (iEO. H. HORN, M. I». 



A. viridicornis Gory. — Oblong, moderately depressed, black, beneath bluish, 



above slightly purple, sides of thorax broadly shining cupreous. Front slightly 

 depressed at middle, surface reticulate and cupreous or brassy. Thorax broad, 

 sides feebly and irregularly arcuate, disc slightly convex, on each side a transverse 

 depression, surface very regularly reticulate. Elytra narrowed at apical third, the 

 apices obtuse, surface opaque finely wrinkled. Body beneath more shining than 

 above, the thorax reticulate, abdomen sparsely punctate. Claws slender, broader 

 at base. Length .20— .26 inch ; 5—6.5 mm. 



This species resembles cyanella in form but is less shining and with 

 the thorax differently colored. The form of the claws will enable the 

 two to be easily separated. 



Occurs in the Middle and Southern States. 



A. cyanella Gory. — Oblong, parallel, elytra narrowing at apical third, color 

 bluish or purple, shining. Front flat, impressed at middle, surface coarsely 

 punctured somewhat reticulate at the sides. Thorax broad, sides nearly straight 

 at middle, arcuate at either end, disc moderately convex with a deep triangular 

 impression on each side behind the middle extending to the hind angle, surface 

 distinctly reticulate at the sideSj smoother at middle. Elytra obtuse at tip, disc 

 with a vague oblique impression in front of middle, the surface moderately shining, 

 obsoletely scabrous at base and indistinctly punctured and much smoother near 

 the apex. BV>dy beneath black with a purplish tinge, the prothorax indistinctly 

 reticulate, the abdomen obsoletely punctate and nearly smooth. Tarsal claws with 

 a broad tooth, acute at its free angle. Length .16 — .22 inch ; 4—5.5 mm. 



It appears to have escaped notice that this species and quercata have 

 the claws distinctly toothed. This distinguishes these two from any others 

 at present known in our fauna, while the broader form, more shining and 

 less sculptured surface distinguish the present from quercata. 



Occurs in the Middle, Southern and Western States, extending as far 

 as Texas, also one specimen from California, (Ulke). 



A. quercata Fab. — Oblong, slightly narrowed posteriorly, color usually 

 bright green with the middle of the thorax and a broad vitta on each elytron 

 brown. Front flat without depression, densely punctured. Thorax broad, the 

 sides usually straight at middle, arcuate at the front angle and slightly sinuate 

 near the posterior, disc feebly convex, with a moderate depression each side behind 

 the middle composed of two continent transverse impressions, surface reticulate, 

 but less distinctly at middle. Elytra gradually narrowed to the tips which are 

 obtuse, surface feebly granulate at base, somewhat less rugous posteriorly. Body 

 beneath green, the thorax distinctly reticulate, the abdomen nearly smooth. Claws 

 toothed at base. Length .16— .24 inch ; 4—6 mm. 



There is a tendency in this species to vary in color, the bright green 

 giving place to brownish. A. bivittata Gory, seems merely a form of 

 this species with the brown elytral vitta well marked. 



The attention of collectors should be directed to this species and 

 cyanella. They are so often sent together, and even placed side by side 

 that I am inclined to suspect a closer relationship than that of allied 

 species, in other words may they not be sexes of one? 



