Some Soil-Inhabiting, Freshwater, and Plant-Parasitic Nematodes from the Canadian Arctic and Alaska

Résumé

Lists nematode genera (and the number of species in each) collected on the Canadian Arctic Expedition in 1915-1916, and at Lake Hazen, Ellesmere Island, in 1962. The former collection, identified by N.A. Cobb, but not hitherto reported (cf. No. 2817 pt. F), comprises 22 genera containing 47 species, about half of which are cosmopolitan. The Lake Hazen collection is the first the the High Arctic; it contains at least 30 described and several undescribed genera, comprising 60 or more species. Gen. Plectus is abundant in both collections.