(48 , 



laying a well defined plumbeous band, along the lower border of which is the 

 lateral line. Body considerably compressed ; color usually dark ; a dark 

 dorsal stripe ; five or six rows of scales above lateral line ; traces of a black- 

 ish spot at base of caudal : eye moderate. M. megalops, (Grd.) Jord. is 

 the nearest relative, from which amahili?: differs by its smaller eye and more 

 pointed head, besides minor characters. Megalops is abundant in the rivers 

 of Georgia, Prof Jordan informs me. 



108. M. rttbellus, {Ag.} Jord. Rosy Minnow. Exceedingly abund- 

 ant in Lake Michigan and all the larger streams through the state. 



1 09. M. dirinnus, Raf. Emerald Minnow. Very common in the Fox 

 river at Geneva, and occurs in most of the larger streams through the state. 



Genus Notemigoims^ Raf. 



110. i\^. a7nericanus,{L.) Jord. Shiner. Abundant everywhere. 



Genus Carassius, 7Vv7. 



111. C. auratus, [^L.) Bleeker. Gold Fish. This species has become 

 naturalized in several of our rivers. 



FAMILY CATOSTOMIDAE. 

 Genus CatostomuSf LeS. 

 112.. C teres, (Mit.) LeS. Common Sucker. Common everywhere 

 throughout the state. A form with a shorter head, and presenting other 

 slight peculiarities occurs in Lake Michigan. This will probably form a 

 variety, but a lack of a sufficient series of specimens has prevented any 

 satisfactory conclusion being reached. 



llo. C. hudsonnis, LeS. Northern Sucker. A single specimen of 

 this species is in the state collection from Rock river, at Oregon. In this 

 specimen the head is 4 in length ; the lat. 1. 100 ; D. 11 ; A. 7 ;. thus 

 answering closely to Agassiz's C. aurora.* 



Genus Hypentelium, Raf. 



114. H. nigricans, {_LeS.') Jord. Hammer-head. Abundant every- 

 where throughout the state. 



Genus Erimyzon, Jord. 



115. E. ohlongus,{Mlt.)Jord. Chub Sucker. Common in Lake Mich- 

 igan and most of the rivers throughout the state. The young of this 

 species have the fins tinged with red, and possess a jet-black lateral band. 



116. E.meLanops,'^Raf.) Jord. Striped Sucker. Common throughout 

 the state. One of the main characters upon which this genus is based 

 proves to be very uncertain, /. r., the absence of the lateral line. In the 

 state collection are specimens of this species which are entirely without a 

 trace of the lateral line : others possess it upon one side only, and others 

 have it upon both sides — generally more or less interrupted, however. 

 Other characters are present which will sustain the separation of this group 

 from related genera, unless new points of connection should be observed. 



*Lake Superior, p. 360, pi. H. 



