I can't find this available anywhere. But, a comment on page 110 of the Canadian pub
(1) states:
"Comments. Agronus contains three species in North America, one of which occurs in Canada. A key to the three species is given in Buchanan (1929b)."
It would be nice to see this key because the Canadian pub
(1) only has the description of the only Agronus in Canada and no key.