ECOLOGY OF ISLE ROYALE. 195 



OeogruqMc Range. Canada; Isle Royale, Michigan. 



'I'i. Rhantus hinotatus Harr. A. Two were found in rock pools on 

 the beach at the entrance to Tonkin Bay (I, 1) on July 13 (G. 73, 74) 

 and at Scovill Point (IV, 1) on July 19 (G. 130). The beetles usually 

 remained on the bottom except when they came to the surface for air. 



Geographic Range. Labrador; Ottawa, Canada; Hudson Bay region; 

 Brit. Columbia; Mt. Washington, X. H.; New York; New Jersey; Mich.; 

 Wisconsin; Kansas; Nebraska; Colorado; New Mexico; So. Arizona; 

 Utah; Nevada; Calif.; Lower Calif.; Mexico; Guatemala. Sharp, '82, 

 p. 614. 



Gyrinidae. 



24. Gyrinus minuttis Fab. A. "In sheltered cores of Si.skowit 

 Lake (V, 6) on August 9, where the water was quiet. Most numerous 

 near the shore under the overhanging alders where they congregated in 

 large flocks (G. 219)." Gleason. 



Geographic Range. Labrador; Canada; Hudson Bay region; Sas- 

 katchewan basin (Evans '03) ; Vermont; W. Penna. ; Michigan; Wiscon- 

 sin; Washington; Oregon; Siberia; Central and Northern Europe. 

 Hamilton, '94a, p. 360. 



25. Gyrinus picipes Aube. A. In large numbers near the shore of 

 Siskowit lake (V, 6) with the preceding species (G. 219). 



Geographic Range. Labrador to Brit. Columbia; Vermont; Michi- 

 jgan; Idaho; Oregon; So. Alaska. Hamilton '94, p. 14. 



Staphylinidae. 



26. Gyrophaena species. "Several specimens (G. 229) were taken 

 from a shelf fungus, Pleurotus ostreatus, on August 11 (V, 4)." Gleason. 



27. Quedius fulgidiis Fab. A. Two were taken from leaf mould or 

 under decayed bark in the maple forest (III, '04) on August 21 (A. 

 142). 



Geographic Range. Greenland to Alaska; south to No. Georgia and 

 La. and Central Calif.; Peru; Mich.; West Siberia; Europe; Asia Minor; 

 No. India; Java; Tasmania; Australia; New Zealand. Hamilton, '94, 

 p. 18, '94a,, p. 3C6. 



28. Phllonthus politus Jjinn.^aeneus Rossi. A. Hamilton, '94a, p. 

 19. One specimen was taken about camp at the Lighthouse (I, 7) on 

 July 7 (G. 26). 



Geographic Range. Isle Eoyale, Mich.; Nova Scotia; Hudson Bay 

 region; British Columbia; New York; Mass.; Penn.; New Jersey; La.; 

 Ohio; Illinois (Wolcott) ; Wisconsin; Iowa; Kansas; Colorado; New 

 Mexico; Queen Charlotte Island; Alaska; Siberia; Amur region; 

 Europe. 



29. LathoMum simplex Lee. A. One specimen (A. 24) was taken 

 July 17 on a jack pine ridge (I, 5). 



Geographic Range. Canada; Mass.; New York; Michigan; Wiscon- 

 sin, Am. But. Soc, '80, p. 176. 



30. Tachinus memnonius Grav. A. One beetle was found under the 

 bark in the hardwoods along the Desor trail (III, '04) on August 24 

 <A. 149). 



