140 PAPERS ON ZOOLOGY OF MICHIGAN. 



apparently the catching of a few adults, each nearly a foot long, in 

 about eight feet of water at Vermilion in August 1913, is evidence of 

 such a movement. One of these fish had in its stomach insects of 

 several kinds, some of which were winged. In summer insects un- 

 doubtedly fall in the water in large numbers along the shore. 



The specimens collected from the deeper part of the shoal (Station 

 2) agree well with the description of Coregonus chipeaformis, given by 

 Jordan and Evermann (1911), but there is a possibility that some or 

 all of them were Lake Erie Whitefish, Coregonus alhus, many of which 

 have been planted in Lake Superior. Mr. H. H. Marks says that fish 

 packers can distinguish the two forms, and Mr. Carlson reports two 

 types in the region, those with dark backs and those with backs more 

 yellowish in color. From all this information it appears likely that C. 

 aJhus is a valid species and is found in the Whitefish Point region. 



Eighteen little whitefish, 3 to 3.5 inches in length, were found in a lot 

 of small herring of similar size to them on the shoal of Lake Superior, 

 at Stations 1 and 5 (Plate XXVIIIB). These were undoubtedly either 

 alhus or dupeajormis (Hankinson 1914) and perhaps both were repre- 

 sented in the schools. A typical one of these is described as follows: 

 length, 3.5 inches; head in body, 4; depth in body, 5; eye in head, 3.5; 

 snout in head, 3.5; interorbital space in head, 3.5; ventral line of caudal 

 peduncle, 2.3; least depth of caudal peduncle in head, 3; dorsal rays, 

 12; anal rays, 12; branchiostegals, 8; gill-rakers, 10 plus 16; scales in 

 lateral line, 75. 



The writer has been unable to find a record in the literature of white- 

 fish beyond the fry stage as small as these taken at Vermilion. Kendall 

 (1903), writing of Coregonus clupeaformis, says, "It is not known to 

 the writer that the young of this species has been observed, except the 

 fry at fish hatcheries, or where they are to be found after leaving their 

 birthplace in the thoroughfares and streams, or at what age they leave 

 these places. It is probable that when quite young, they go to deep 

 water, where, having thus escaped their enemies in the streams, they 

 become the prey of rapacious fishes of the lakes." G. B. Goode (1884) 

 says, "Relative to the movements of the whitefish in Lake Superior, 

 Mr. George Barnston is of the opinion that the young and immature 

 whitefish confine their range entirely to shallow water near shore. 

 He states that pound nets in twenty to forty feet of water catch great 

 numbers seven to eight inches long. From the fact that none have been 

 found in lake trout stomachs, he infers the young whitefish are not in 

 deep water where the trout dwell." 



Eight of the little whitefish were opened and their food examined. 

 The principal data are given below: 



