26 Proceedings of the Biological Society of Washington. 



Colors in formalin, upper parts pale brownish, paler below; fins all 

 pale; eye dark bluish with traces of bronze on the iris. 

 The measurements are given in millimeters in the following table: 



MEASUREMENTS OF LEUCICHTHYS MACROPTERUS. 



mm. 



Length without caudal 244 



Comparative measurements : 



Head, 4.28 in length 57 



Depth, 4 in length 65 



Caudal peduncle 



Length 23 



Depth 20 



Eye, 4% in head 11 



Orbit, long diameter 15 



Snout from eye 15 



Interorbital space 16 



Maxillary length from tip of snout, 3 in head 19 



Mandible, very slightly projecting ... 25 



Snout to occiput 38 



Ventrals to pectorals (ventral origin to pectoral origin) . 81 



Pectoral length in ventral-pectoral distance 85 



Pectoral length 95 



Ventral origin from tip of snout 137 



Ventral length 107 



Accessory ventral length 18 



Dorsal height (longest ray) 85 



Dorsal origin from tip of snout 123 



Adipose length — length of base 9 



Adipose height 8 



Anal height (longest ray) 70 



Lower caudal rays (longest) 95 



The discovery of this singular form of cisco is due to the watchfulness 

 of Superintendent Hartman over the collections of fishes obtained by 

 fishermen and collectors in the vicinity of the Erie Station. The specimen 

 was caught in a gill net by the tug Erie, December 19 or 20, 1914, on a 

 north course out of Erie near the boundary line between New York and 

 Canada. 



Type in U. S. National Museum, Washington, D. C, catalogue number 

 76,845. 



