CATOSTOMUS LONGIROSTRIS. 



177 



gave to this species tbe name of aurora, in allusion to the red breeding 

 colors of the male. Western specimens were still later described by 

 Girard as two distinct species, griseus and lactari'us, apparently without 

 comparison with the Eastern forms. 



The examination of the large seiies of specimens noticed belowy to- 

 gether with others from the Great Lakes and Upper Mississippi, has 

 convinced me that all belong to one species, variable to some degree, 

 but not more so than is Catoslomus teres and less so than Erimyzon 

 sitcdta. Some of the Upper Missouri specimens referable to C. griseus 

 Grd. have on an average rather smaller scales (93 in the lateral line 

 instead of 100 to 110) ; but I am unable to distinguish a tangible variery. 

 The original types of C. lactarins Girard are not now to be found, but 

 the description indicates no difference from C. longirostris. 



Specimens in Unittd States National Museum. 



Number. 



Locality. 



Collector. 



i054 Lake Superior J. W. Milner. 



2067 Pugct's Sound R. Kennicott. 



2563 Platte River, Nebraska Capt. Simpson. 



6709 Yonghiogheny River Prof. Andrews. 



7047 Lake Winnipeg R. Kennicott. 



7640 



7993 Xulato, Youcon River, Alaska W. H. Dall. 



8136 



8435 



8437 Essex County, New York 



8602 Quebec S. F. Baird. 



8905 Great Slave Lake R. Kennicott. 



9010 Pole Creek, Nebraska Lieut. Wood. 



9116 



9175 



9522 Saint Michael's, Alaska Dr. Bannister. 



11212 Au Sable River, Michigan J.W. Milner. 



11213 Au Sable River, Michigan J.W. Milner. 



12210 Au Sable River, Michigan J.W. Milner. 



20075 Racine, Wis - 



20191 Northern Boundary Survey, Dakota Dr. Elliott Coues. 



20223 Racine, Wis S. F. Baird. 



20235 Lake Superior J. W.Milner. 



20257 (Probably original types of griseus; the old number Bowman, 

 and locality obliterated.) 



20282 Platte River, Nebraska 



20669 Great Lakes.. 



Bull. N. M. No. 1212 



