THE CANADIAN ENTOMOLOGIST. 219 



Described from a single male captured with the species of 

 Gonatocems noted above. Respectfully dedicated to Hugo De 

 Vries, the author of the mutation theory in biology. 



Habitat: Australia — Nelson (Cairns), N. Q. 



Type: No. Hy 1296, Queensland Museum, Brisbane, the 

 above specimen in balsam (mounted with the types of Gonatocems 

 fasciativentris Girault). 

 2. Polynema mendeli, new species. 



Male: Length 1.20 mm. 



Like devriesi, but the discal cilia of the fore wing is finer, the 

 marginal cilia shorter, not quite as long as the greatest width of the 

 blade, subfuscous, not as slender proximad before venation; in this 

 species the proximal funicle joint is much shorter than the next 

 joint, not half its length, while also joints 5 distad of the flagellum 

 are all short, more or less subequal to 1, flagellar joint 2 longest, 3 

 and 4 next in succession. This antennal structure easily separates 

 this species from draperi and romanesi. Ferrugineous, the 

 abdomen (exclusive of pedicel) black, as are also the distal tarsal 

 joints and the flagellum; proximal funicle joint yellowish, head 

 blackish. Fore wings with about 10 lines of fine but rather long 

 discal cilia. 



(From one specimen, enlarged as in previous descriptions.) 



Female: Not known. 



Described from one male, captured with the preceding species. 

 Dedicated to Abbe Gregor Mendel, who established the Mendelian 

 principle of inheritance. 



Habitat: Australia — Nelson (Cairns), Queensland. 

 Type: No. Hy 1297, Queensland Museum, Brisbane, the 

 above specimen in balsam (mounted with specimens of Gonatocems 

 spinozai and the type of Polynema nardaui, described beyond). 



3. Polynema nordaui, new species. 



Female: Length 0.60 mm. Small for the genus. 



Black, the first three antennal joints, abdominal pedicel, legs 

 except distal half of posterior femur and distal tarsal joints, orange 

 yellow. Like the North American longipes Ashmead, being 

 about the same size and habitus, but differing in that the wings of 

 longipes are much narrower and slender and the antennal segmen- 

 tation entirelv different, since in this Australian species the second 



