144 PAPERS ON ZOOLOGY OF MICHIGAN. 



mained under this even when it was dragged on the bottom or rolled 

 over; and it moved out far enough to be caught in the seine only after 

 many attempts were made to dislodge it. 



The food of brook trout in the region is, in all probability, chiefly 

 insects, as it is in the other places where the food of the species has been 

 examined (Needham and Macgillivray 1903 and Juday 1907). One 

 fish from a stream had remains of insects in its alimentary canal, in- 

 cluding \vinged forms, and one from Lake Superior had eaten a fly and 

 a small fish. 



The brook trout is a well-known game fish in eastern North America 

 and a species that attracts many fishermen to northern Michigan, thus 

 benefitting the state (Dickerson 1904 and Newcombe 1904); but no 

 evidence could be found that the Whitefish Point region is ever visited 

 by trout fishermen. In fact, the species appears to be of little value to 

 the few people living there. None large enough for food are in the 

 streams, and the ones in Lake Superior are only to be caught in small 

 numbers and then ^vith difficulty. 



7. Catostomus catostomus (Forster). Long-nosed Sucker. — These 

 suckers were frequently taken with common suckers from Station 2, 

 but they were not as common as the latter. Three typical specimens 

 (10.5-16 inches long) were preserved. In color they were as follows: 

 dark greenish-olive finely spotted with Hght greenish-yellow due ta 

 each scale having a center of that color; sides yellow with metallic re- 

 flections; below white with a pinkish tinge, dorsal and caudal find 

 similar to the back in color; lower fins of a light reddish brown. 



The only other place where this species was found was in the beach 

 pond at Station 31, where three little ones were caught. 



8. Catostomus commersonii (Lacepede). Common Sucker. — 

 Abundant in the shallow water of Lake Superior, both close to the 

 shore, where schools of many little ones were frequentlj^ found, and 

 farther out in eight or more feet of water, where many individuals about 

 1| feet long were taken. Schools of the little suckers entered Vermilion 

 Creek to feed near its mouth and also the beach ponds freely connectes 

 with the lake (Stations 31 and 121). None were found in Mason's 

 Creek or the connecting ponds on the Lake Superior beach. They 

 were only locally abundant in the marsh lakes, since they were only 

 found along the north shore of Beaver Lake, chiefly at Station 59 

 (Plate XXB). Some were present in Shelldrake River and in Shell- 

 drake Lake, but they appeared uncommon here. 



All of the little fish from close to the Lake Superior shore, chiefly in 

 one or two feet of water, as well as those from the beach ponds were 

 very uniform in size and appearance, commonly about 2.5 inches long. 

 One of the larger fish (16.5 inches long) from the deeper shoal (Station 



