1912] North American Scoliine 319 
The anterior lateral margins of the clypeus are set with short bristle- 
like yellow hair arising from an area which is obscurely yellow. The 
outside of the antenna beyond the third segment is quite ferruginous 
and the prothorax in front is rather thickly punctured and covered with 
long brownish hairs. The rest of the body except the venter of pro- 
thorax, pronotum, ridge of the mesopleuron, legs, and front face of the 
dorsum of the first segment of the abdomen is remarkably free from 
punctures and hairs, the top of the head, centre of the mesonotum and 
the central portion of the scutellum and postscutellum being particu- 
larly free. The abdomen as a whole has a slender appearance being 
narrow and long. At the point where the second segment of the abdo- 
men beneath bends abruptly upward to meet the first segment and on 
either side of the mid line of the body there is a slight tubercular ten- 
dency. The larger spine at the end of the hind tibia is a great deal less 
than half the length of the first tarsal joint. 
The writer has seen no other specimen like the above and no 
description that he has been able to find agrees with it. He has 
therefore described the form as a new species. He believes 
that when the male is studied it will be found to have distinct 
rounded tubercles on the ventral surface of the second abdominal 
segment where the segment bends upward to meet the first. 
This last is because of the slight tubercular tendency spoken of 
above in the female studied and in all species observed by the 
writer having these tubercles the male always has them well 
developed, the females only slightly or not at all. 
Scolia dubia dubia Say. 
Scolia dubia. Say, Boston Jour. Nat. Hist., I, p. 4, 1837, p. 364, n. 2. 
The type of this species is not in existence. 
Say has recorded the length of the species as four-fifths of an inch, 
Saussure and Sichel record the females as 22 to 25 mm. and the males as 
15 to 23 mm. in length. The length of the specimens that the writer 
has had the opportunity to personally examine vary in the female from 
15 to 22 mm. in length and the males from 13 to 19 mm. 
Except for slight variations, the body of this species is black to the 
end of the second segment of the abdomen and the rest of the abdomen 
is reddish brown. ‘The third segment of the abdomen has on each side 
of its dorsal surface, an ovate yellow spot. The wings are uniformly 
fuliginous, with metallic reflections, blue at some angles, delicately 
‘purple at others. The nervures are black. 
