DISTRIBUTION OF COLKOPTERA. lOo 



83. Eretes Sh., 628 ( Eunectes) , sticticus Limi. 



This species is more extensively distributed tlian any known Dy- 

 tiscide. Sharp gives its distribution as folh)\vs: " France, Corsica, 

 Sardinia. Spain. Africa. Siberia. Japan. Formosa. China. 

 Phili|ipines. Timor. Sumatra. Java. Pulo Penang. Siani. India. 

 Arabia. Mesopotamia. Canary Islands. Madeira. Cape Verde 

 Islands. U. S. N. A. Mexico. Peru. Guadaloupe. Galapagos." 

 Australia may, perhaps, be added. It is not known at many places 

 in the IT. S. A., but occurs in Kansas (Siioiv), Texas and at Vallecitas, 

 California. T. iv, 386 ; Sh., 699 ; Turcomania, Heyden, 58. 



84. Hydaticus stagnalis Fab., cinctipennis Aube, modestus Sliarp, americnnus 



Sh. (T. X 280) 



As thus constructed this species varies in color ornamentation. 

 It occurs in New York, Michigan, Illinois. My specimens (modestus) 

 are from Wisconsin, Red River, Sharp. Northern Europe. Western 

 Siberia. T. iv, 404 ; Sh., 650-52 ; Heyden, 59. 



8.5. H. Isevipennis Thomp. 



Comparing this with stagiicdis Dr. Sharp, 1. c. says: " They are 

 perhaps not distinct species," giving Red River [Manitoba], Sweden 

 and Finland to 60° 30' as its habitat. 



86. Dytiscus marginalis Lhin. 



Occurs in Canada and northern Michigan. Dr. Sharp has a 

 specimen labeled by Castelnau " Am. Bor. int. mont. rocheuses," and 

 found another in Murray's collection said to be from North America. 

 Widely distributed in Europe to 68°. W. and E. Siberia. Japan. 

 Sh., 641 ; Heyden, 58. 



87. D. circumcincbus Ahr., circumscriptHs Lac. 



Dr. Sharp had specimens from Red River, [Manitoba]. Europe 

 to 61° 50' north, in Finland. Northern Siberia. Sh., 642; Hey- 

 den, 58. D. anxius Mann, is possibly synonymous. It occurs in 

 Oregon and Sitka. T. iv, 408 ; also in Canada and Hudson Bay 

 region. Horn, in lift. 



88. D. daiiricus Gebl , confluen.i Siij, diffinis Lee, FraHliinii Kirby, Ooligbnkii 

 Kirby. 



This species extends across the northern part of the continent from 

 Maine to Alaska (Maine, Hudson Bay (LeConte C<d.), Great Bear 

 Lake River, Lake Superior, Michigan, Wisconsin, Kansas, Colorado 

 (Pagosa), Alaska (Sitka). Kamtschatka ; Dauria. T. iv, 407 ; P. 

 1868, 370-72 ; Sh., 643 ; Heyden, 58. 



