A carina i:;n 



Lebertia porosa Thorell. 



Bernard harbour, Northwest Territories, October 6-8, 1915; in stomach of 



Salvelinus marstoni Garni. 



Laminipes torris Mullet. 



Herschel island, Yukon Territory, July 30, 1916, in pond; although do male 



is present, I feel sure it is this species. 



Curvipes reighardi Wolcott. 



Pond on Chantry island, Northwest Territories, June 17, 1916; pond at 

 Herschel island, Yukon Territory, July 30, 1916; lake inland from Bernard 

 harbour, Northwest Territories, August 10, 1915; pond at Bernard harbour, 

 Northwest Territories, June 28, 1915: pond at Collinson point, Alaska, June 23, 

 1914; lake at Konganevik, Alaska, June 26, 1914. 



PARASITID^. 



Parasitus bomborum Oudemans. 



Bernard harbour, Northwest Territories, on Bombus, June 16. 1916: June 

 25, 1915; July 2, 6. 9, 11, 1915; and on the catkins of Salix, July 2, 1915. 



ORIBATID^. 



Galumna lucens Koch. 



Barnard harbour, Northwest Territories, May 25, 1916, on surface of pond; 

 Pikumalerksiak island, near Cockburn point, Dolphin and Union strait. North- 

 west Territories, July 15, 1916, in moss. 



Scu to vertex nigrofemoratus Koch. 



Bernard harbour, Northwest Territories. June 30, 1916. with spider cocoon 

 under a stone. 



Scutovertex lineatus Thorell. 



Cockburn point, Northwest Territories, September 7, l'.Ml. in colonics in 

 depressions on under sides of flat stones near the seashore: not moving. 



