NOKTH AMKKrCAN C( )Li:oi>TEKA. 
307 
sliglitly flattened with a vague costa, sutural edge elevated behind the middle, 
basal depre-ssions moderate, surface closely imbricate-granulate ; body beneath 
more shining than above and more greenish ; pi'osternal lobe distinctly emar- 
ginate at middle, the intercoxal process moderately broad, acute at tip, propleurse 
not closely punctate, very little pubescent, sides of metasternum densely, not 
coarsely, asperate. Abdomen moderately closely punctate, less so at middle, 
dense at sides of first segment; last segment truncate, vertical portion of ventral 
segments sparsely ptibescent; pygidium coarsely punctate, the median carina 
produced at apex; claws dissimilar on the feet. Length .30 — .45 inch. ; 7.5 — 
11.5 mm. 
Male . — Front more densely punctured, usually greenish. Proster- 
nnni densely punctured between the coxse, more sparsely in front, 
not hairy ; fir.st ventral segment vaguely depressed along its middle, 
but not smooth, the second with a smooth, deep impression extending 
two-thirds to the suture; anterior tibise feebly mucronate, middle 
and posterior tibite simple; claws of anterior and middle feet cleft 
at apex, apparently bifid, posterior claws cleft near base, forming a 
short, acute tooth. 
Female . — Head somewhat' cupreous, less densely punctate. Ven- 
tral segments simple; tibiie not mucronate; claws broadly toothed 
at basal half. ■ 
The color of this species is remarkably constant, varying but little 
from olivaceous, becoming but slightly green or plumbeous, resem- 
bling closely both pensus and Blanchardi, from either of which ref- 
erence must be had to the male characters for separation, although 
the carina of the hind angles of the thorax is, in both sexes, stronger 
and more arcuate than in any species related here. In my cabinet 
a male specimen from an unknown locality agrees in all particulars, 
except that the hind claws have the same form as on the middle and 
front feet, and the angular carina is much less distinct. While it 
may represent a different species, it seems preferable to allow it to 
pass with mere mention. 
A careful examination of the types of torpidus and gravis })rove 
them identical with the present species. Both were founded on 
female specimens. 
Hab . — Massachusetts and New Hampshire; westward to Colorado. 
.4, itciitipeiiiiis Mann. — Form moderately robu.st, color variable from blue, 
or blue-black to olivaceous; surface feebly sbining. Anteuiife slightly passing 
tbe middle of tbe tborax, bluisb or greenisb. serrate from tbe fourtb joint. 
Head densely coarsely puii(;tured. front ratber flat, with a vague crescentic de- 
]iression, occiput ratber concave, tbe median iinpre.ssed line extending to tbe 
middle of tbe front. Tborax one-fourtb wider than long, not narrowed at base. 
