516 Wisconsin Academy of Sciences _, Arts , and Letters. 
Mirror lake, 433, 462. 
Origin of genus Diaptomus, 384. 
Oregonensis group, 391, 400. 
Pine lake, 426, 430. 
Primitive species, where located, 385. 
Primitive structural characters, 390. 
Rocks, Lake, 433, 462. 
Round lake, 431. 
St. Clair, Lake, 428. 
Seeley lake, 426. 
Shallow water and limnetic forms, dif¬ 
ferences between, 388. 
Shoshone, Lake, 433. 
Bignicauda, group, 397, 401. | 
Species distinctions, bases of, 388. 
Stone lake, 428. 
Structure, relation of to habitat, 388. 
Summit lake, 442. 
Tenuicaudatus group, 394, 400. , 
Tomahawk lake, 426. 
Tulare, Lake, 440. 
Turkey lake, 440. 
Twin lakes, 465. 
Typical copepod appendage, 390. 
Water carriage, distribution by, 400. 
West Okoboji lake, 453. 
Winona lake, 437. 
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