ECOLOGY OF ISLE ROYALE. 207 



Endomychidae. 



43. Lycoperdina ferruyinea Lee. Disl. Columbia; New Jersey west 

 to Colorado; New Hampshire (Mt. Washington); New York; "Middle, 

 and Southern States"; Ohio; Illinois (central and northern) ; Michigan 

 (Bachewanung Bay, Detroit); Canada; Wisconsin; Iowa; Colorado; 

 New Mexico. 



Histeridae. 



44. Hister Ttasalis Lee. Ohio: Michigan (Marquette). 



45. Plegaderus sayi Mars. "Middle States"; Michigan (Sault de Ste. 

 Marie, Marquette); Canada; Wisconsin; Colorado; New Mexico. 



Nitidulidae. 



46. Omosita discoidea Pabr. Canada; Michigan (northern) ; Colo- 

 rado; New Mexico; Europe and the Pacific States, east to Colorado. 



Lathridiidae. 



47. Stephostethus (Lathridiis) Uratus Lee. Dist. Columbia; Ohio; 

 Canada (Ottawa) ; Michigan (Detroit) ; Queen Charlotte Islands, Brit- 

 ish Columbia. 



48. Lathridius minutus Linn. "Nearly all North America"; Dist. 

 Columbia; Michigan (Detroit) ; Wisconsin; Colorado; "Alaska to Louis- 

 iana and to Massachusetts and eastern Canada"; all Europe and north- 

 ern Asia to Kamtsehatka. 



49. Corticaria serricolUs Lee. Michigan (Michipicoton Eiver, De- 

 troit) ; British Columbia. 



ByrrMdae. 



50. Byrrhus geminatus Lee. New Hampshire (summit Mt. Washing- 

 ton) ; Michigan (Isle Royale only). 



Dascyllidae. 



51. Macropogon piceus Lee. Michigan (Isle Royale only). 



52. Eurypogon niger. Michigan f Michipicoton River). 



53. Euscinetus terminalis Lee. New Jersey west to Colorado; New 

 York; Vermont; Ohio; Illinois; Michigan (Escanaba, Marquette, De- 

 troit) ; Canada. 



Elateridae. 



54. Cryptohypniis Mcolor Esch. This species is believed to be merely 

 a variety of no^turnm Esch. which is recorded with the variety from 

 the following localities; — Labrador; Hudson Bay regions; New Hamp- 

 shire (summit and alpine regions Mt. Washington) ; Canada; Michigan 

 (Marquette, Sault de Ste. Marie) ; Dakota; Wisconsin; Utah; Colorado; 

 Montana; Idaho; New Mexico; Oregon; British Columbia; Alaska; 

 Kamtsehatka; eastern Siberia. 



55. Crytohypnus tumescens Lee. Michigan (Sault de Ste. Marie) ; 

 Colorado; New Mexico. 



56. Elater nigrimis Payk. var.? Elater nigrinus occurs in Vermont; 

 Canada (Ottawa); Michigan (Escanaba, Marquette, Detroit); Alaska; 



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