'k. ■* 
liosejabl'os A. if/qjunctivL)Uis. Nob. and A* com' 
munis and vulgaris^ Fabr. but differs from all in 
colour, greater brevity of the thorax, more robust 
form, &c. Viewed in a particular light, a tint of 
blue may be, with some difficulty, detected. 
7. A. sera, Greenish-black ; three basal joints 
or the antennee yellowish. 
Iiihab. Mexico. 
^Intenncs fuscous ; first, second, third and base 
of the fourth joints yellowish : thorax impunctur- 
ed, basal angles rectangular, with the oblique 
line not deeply impressed ; basal lines rather 
deep, abbreviated, definite, impunctured ; dorsal 
line distinct : elytra with the striae impunctured, 
acutely impressed ; basal abbreviated stri» ra- 
ther long ; interstitial lines with a very slight 
convexity, nearly flat ; near the lateral tip slight- 
ly and rather acutely sinuated : tibiae and tarsi 
piceous. 
Length three-tenths of an inch. 
The thorax is longer than that of the preceding 
species and the interstitial lines are a little con- 
vex, which will readily distinguish it from A. 
impimcticollis, N. The colours of the antenna? 
as strongly contrast, as those of A. vulgaris, F. 
8. A. fartiva, Pale ; thorax punctured at base ; 
•elytra w;ith punctured striae. 
Inhab. Indiana. 
Body honey -yellow, more or less tinted with 
dusky : antennee, palpi and all beneath paler : — 
head with the frontal impressed lines dilated, dis- 
tinct : thorax a little contracted at base, the pos- 
terior angles slightly excurved and acute ; dorsal 
line well impressed, particularly behind the mid- 
dle ; basal lines deeply impressed and definite, 
punctured \ impressed lines of the posterior an- 
gles, distinct and rather deep, punctured ; base 
punctured : elytra with punctured stria? ; . the 
punctures orbicular and close set ; near the tip 
obtusely, but not deeply sinuated. 
Length less than two-fifths of an inch. 
Resembles the A. fulva. 111. particularly in 
the form of the thorax. The colour has some- 
times a very slight metallic tinge but never so 
obvious as in the fulva. 
9. A1 grossa. Alternate interstitial spaces 
punctured. 
Inhab. North-West Territory. 
Body short, robust, convex, blackish piceous : 
head : thorax convex, descending much 
each side, transverse, oblong-quadrate ; dorsal 
line almost obsolete ; anterior transverse line 
hardly obvious ; basal margin depressed and 
somewhat rough ; lateral margin depressed, but 
not elevated except near the posterior angles 
lightly : elytra with a sinus near the tip ; stri® 
well impressed, impunctured ; interstitial spaces 
with from five to eight distinct punctures on the 
third, fifth and seventh spaces i marginal series 
of punctures small, almost indistinct. 
Length of thorax and abdomen nine twentieths 
of an inch. 
