Fossorial JTi/menoptera of North America. Ill 



pubescence forming a regular line of long silvery evenly cut hairs; 

 basal joint of tarsi yellow, ferruginous at tip, remaining joints wholly 

 reddish. 



Abdomen broad and flattened, convex beneath, a little longer than 

 the head and thorax together, with five pairs of fasciae, those on basal 

 segment reduced to single square dots ; those on second segment are 

 broader than the others, third pair longer, narrowed, nearly contiguous 

 on the mesial line of the body; those on the fifth rings unite to form 

 a continuous band, more ovate and broader than the others. Beneath 

 black, edges of segments obscurely testaceous. 



Length of body, .54; head and thorax together, .26; abdomen, .28 

 inch. 



Hudson Bay Territory, (Coll. Norton) ; Maine, Brunswick, and head 

 waters of Penobscot, (Packard). 



This is apparently a member of the boreal or Canadian Fauna, as it 

 has not been taken South of the limits of that fauna. It is not un- 

 common, and its broad flattened body, the golden pubescence on the 

 front, the acute and suddenly docked clypeus, the hind femora lined 

 with a linear brush of long, even, silvery minute bristles, and the 

 arrangement of the abdominal fasciae, together with the short, very 

 transverse head, present easy marks for recognition. 



It represents Crabro crphalotes of Europe, though differing from it 

 in many characters of coloration and sculpturing. 



Crabro stirpicola, n. sp. 



% . Head broad and short, punctured confluently, being one half as 

 long as broad. Eyes small, remote, so that the front is very broad 

 above ; surface of the head convex ; ocelli slightly raised, situated in 

 a low triangle ; a hardly perceptible broad depression leading from the 

 anterior ocellus to the antennal groove, on each side of which the 

 orbits are lined with silvery pubescence, the head narrowing rapidly to- 

 wards the insertion of the mandibles, usually more than the width of 

 this region being a little more than one-half that of the head itself; 

 clypeus itself two-thirds as long as broad, acutely produced in front, 

 flat, no carina seen through the silvery pubescence. Mandibles 

 acutely bideutate, black, highly polished, with a mesial yellow spot. 

 Antennas stout, scape dilated, clavate, yellow, stained with brown near 

 the base on the upper side; joints of flagellum thickened in the middle 

 slightly, fifth joint with one larger tooth beneath ; basal joint ferru- 

 ginous. Head coarsely punctured. 



Prothorax deeply notched mesially, each side convex, rounded, not 



