FISH. 251 



Specimens were taken, all of these being from the following places: 

 ox-bow pond at Caseville, upper part of Pigeon River, and county 

 drain near Bayport. A specimen was taken from the crop of an 

 American bittern shot on Sand Point. 



30. Lucius lucius (Linnaeus). Common pike; lake pickerel; 

 grass pike. — Very common in the larger inland bodies of water. Taken 

 in the upper and lower parts of the Pigeon River; ox-bow pond at 

 Caseville, and in the deeper waters and the adjacent county drain 

 at Rush Lake. 



31. Lucius masquinongy (Mitchell). Muskallunge. — Recorded 

 from Saginaw Bay by Cope (1865, 80; 1869, 410) and Goode (1884, 

 465) under the name Esox nobilior Thompson. 



32. Fundulus diaphanus (Le Sueur). Spring minnow; barred 

 killifish; toothed minnow; horse minnow. — Found in small numbers 

 in the Caseville marsh and in the county drain at Rush Lake. 



33. Percopsis guttatus Agassiz. Trout perch. — Large numbers 

 of dead individuals were found on the shores of Sand Point. 



34. Pomoxis sparoides (Lacepede). Calico bass; grass bass; 

 strawberry bass.^ — ^This species is apparently uncommon in the region 

 studied. One specimen was taken in Turtle Bay and another in the 

 lower part of the Pigeon River. Recorded from Saginaw Bay by 

 Cope (1865, 84) under the name of Hyperistius hexacanthus (Gill). 



35. Ambloplites rupestris (Rafinesque). Red-eye; goggle-eye; rock 

 bass.— Common and widely distributed in the sand region and ad- 

 jacent waters of Saginaw Bay. Found in Orr's fish-trap, Turtle Bay, 

 Pigeon River, ox-bow pond at Caseville, Caseville marsh. Mud Creek, 

 county drain near Bayport, and under Orr's fish house on Sand Point. 



36. Eupomotis gibbosus (Linnaeus). Pumpkin-seed; sunny; com- 

 mon sunfish. — Like the rock bass this species is very common and 

 widely distributed in the region. It was taken in Turtle Bay, upper 

 and lower parts of the Pigeon River, and in the deeper waters and 

 adjacent county drain and marsh (west end of lake) at Rush Lake. 



This fish was abundant in Turtle Bay and was observed breeding 

 there. As said before, this bay is a shallow body of water measuring 

 from four and a half to six feet in depth and comprises about fifteen 

 acres. The conditions are well suited to the life of the common sun- 

 fish, the bottom being mudd^^ the water shallow, quiet, and warm, 

 and the vegetation abundant. 



Individuals were found with nearly ripe eggs as early as June 23, 

 and males with milt were found as late as August 20. The only case 

 of spawning was observed on July 5. Nest building was watched 

 closely in connection with a number of individuals in different lo- 

 calities, and the following was the general method. The ne.sts. 



