1912] North American Scolune 331 
At the end of the above description Cameron says: ‘It is obvious 
' that the insect is nearly related to Scolia azteca; the latter, however, 
differs from Scolia monticola in having”’ (from this point to the end of 
the paragraph is a translation) an obtuse median tubercle at the base of 
the second ventral segment which is subtruncate. In the female this 
tubercle is minute almost disappearing. In the male it is larger, some- 
what broader transversely emarginate in the middle and subcarinate 
on either side. 
The writer has but two specimens which he could consider as this 
species. They measure about 13 mm. in length and agree well with the 
above description. The point of difference in the presence or absence 
of the tubercle on the venter of the second abdominal segment is borne 
out. These specimens do not have it. The whole specimen is 
black and the body except the front of the head is thickly punctured 
and haired. A part of the frons starting just below the bases of the 
antenne and continuing upward between them, then gradually widening 
to a straight transverse line which if continued would intercept the eyes 
at the upper edges of their emarginations, is raised above the rest of the 
face enough to allow for the insertion of the antennz in its sides instead 
of in the usual depressed space. The part of this raised portion posterior 
to the bases of the antennz is closely and deeply punctured. The rest 
of the face is sparsely indented with rather deep punctures. Starting 
at a point just posterior to the larger ocellus a continuous ridge passes 
downward and outward across the frons to a point within the emargina- 
tion of the eyes. The wings are fuliginous with a darker area along the 
costal border, and they have conspicuous metallic reflections, blue at 
some angles, green at some and bright purple at others with perhaps a 
slight tendency toward magenta in places. 
This species is easily distinguished from others in this sub- 
family by the peculiar elevation of the portion of the frons 
spoken of above. This is not referred to by Cameron and there- 
fore possibly the insect here described is not monticola. If it 
should prove not to be monticola it may be given the name 
N1grescens. 
The two specimens are now in the American Museum at 
New York City. Locality unknown. They agree quite closely 
with a specimen in the American Entomological Society col- 
lection at Philadelphia marked nigrescens type, undoubtedly a 
manuscript name. More material should throw needed light 
on this species. 
