276 



PISHES. 



Var. Otsego, (DeWitt Clinton.) Otsego Lake White 

 Fish. A form, said to have smaller scales, and dusky 

 lateral stripes, and to be peculiarly excellent for food, 

 found in Otsego Lake, N. Y. ( = C. clupeiformis.) 



Var.? novanglim, (Prescott.) Shad - "Waiter. A 

 slender, short -headed form, found in L. Winnipiseogee, 

 N. H. ( = C quadrilateralis.) 



Var.? neohantoniensis, (Prescott.) Whiting. A lit- 

 tle known species or variety found also in Lake Winni- 

 piseogee. (=C. labradoricus. Rich.) 



6. C. quadrilateralis, Rich. Menomonee White 

 Fish. Body much more slender, its depth 5 in length; 

 snout compressed, projecting; maxillary very short and 

 small, less than one-fifth the length of head, not reaching 

 to eye; D. 14; A. 13; lat. 1. 88. Great Lakes and north- 

 ward, easily distinguished from the preceding. 



7. C. couesii, Milner. Chief Mountain White 

 Fish. Form of preceding, but mouth inferior and upper 

 jaw produced in a cutaneous appendage; D. Ill, 12; A. 

 IV, 10; lat. 1. 88. Upper Missouri region and perhaps 

 occurs in Minnesota. A curious species, more unlike the 

 typical Coregonus than the species of Argyrosomus are. 

 The genus Argyrosomus is not a good one and should 

 be reunited to Coregonus. Several other species of 

 Coregonus have been described from within our limits, 

 but I do not think them valid. 



FAMILY CVL— HYODONTID^. 



(TAe Moon Eyes) 



Body much compressed, covered with large, silvery 

 cycloid scales; head naked; margin of upper jaw formed 

 by intermaxillaries mesially and by maxUlaries laterally; 



