2 University of Michigan 



The type is a female specimen, to be deposited in the United 

 States National Museum, 269 mm. in length to the base of the 

 caudal, collected in Lake Michigan on June 15, 1923, 22 miles 

 NNE of Charlevoix, Michigan, off He aux Galets, in 25-47 

 fathoms of water, Paratypes, deposited in the Museum of 

 Zoolog}- of the University of Michigan, were obtained in Lake 

 Michigan off the IMichigan shore on /Vugust 11, 1920, 

 14 mi. SE }2 E, and on August 12, 1920, 15 mi. 

 SE X S ^ S of Manistique; on June 29, 1920, 

 5 mi. N X E, on June 15, 1923, 22 mi. NNE and 

 on August II, 1923, 3 mi. NW ^ W of Charlevoix; on August 

 10, 1923, 8 mi. NNW of Big Rock Point, and on August 21, 

 1923, from an unknown location off Charlevoix ; on June 22, 

 1920, 5 mi. NNW, and on July 31, 1923, 5 mi. NW of Cat 

 Head Light; on July 30, 1923, off the South Manitou Island; 

 on October 4, 1920, 9 mi. north of Point Betsie; and on March 

 20, 1919, 12 mi. west of Grand Haven. Other paratypes were 

 taken off the Indiana shore on September 3, 1920, 22 mi. NW x 

 N Yz N, on October 11, 1920, 20 mi. N x W % W, on Novem- 

 ber 8, 1920, 18 mi. NNW and on November 19, 1920, 17 mi. 

 NNW and 173^ mi. NW x N ^ N of Michigan City; and off 

 the Wisconsin shore on September 23, 1920, 27 mi. ESE of 

 Milwaukee; on September 25, 1920, 18 mi. and also 5 mi. E yz 

 S of Port Washington; on October i, 1920, 11 mi. SE of Shey- 

 boygan; on August 24, 1920, 10 mi. E x N of Algoma; on 

 August 23, 1920, 12 mi. E X S of the Sturgeon Bay Ship Chan- 

 nel mouth; on August 18, 1920, 4 mi. west of Boyer Bluff; 

 and on August 19, 1920, 20 mi. E 3^ N of Rock Island. Speci- 

 mens have also been taken in Lake Huron in Michigan waters 

 off Cheyboygan, Rogers City, Alpena and Harbor Beach and in 

 Canadian waters in Georgian Bay, off Lion's Head and Wiar- 

 ton ; these are iwt designated as paratypes, and are not involved 

 in the following description. 



