8) 



CATALOGUE. 



Class I. PISCES. (The True Fishes.) 



Sub-class Physoclisti. 



Order I. ACANTHOPTERI. (The Spiny-rayed Fishes.) 



Family I. GADID^. (Cod-fishes.) 



Genus 1. Lota, Cuvier. 



1. Lota maculosa Le Sueur. — Burbot ; Ling ; Eel Pout. 

 Taken only in Lake Michigan. 



A single specimen occurred some years ago at Naples, on the 

 Illinois Pviver, having evidently entered the river through the canal, 

 then recently opened to the Chicago Eiver. 



Family II. COTTID.E. (The Sculpins.) 

 . Genus 2. Uranidea, De Kay. 



2. Uranidea richardsoni, Agassiz. — Miller's Thumb; Blob; Muffle- 



jaw; Bull-hbad. 

 (Bui. II, 50; Potamocottus alvordi, Potamocottus icilsoni, Potamocottm 



meridionalis.) 



This species, the only representative of its family known posi- 

 tively to occur within the limits of our State, is by far the most 

 abundant in Southern Illinois, where it is a common creek species, 

 nestling under stones in shallows and rapids. A single specimen 

 from a muddy stream in McHenry county, and a few from the 

 shallow waters of Lake Michigan, are the only representatives in 

 our collections from the northern part of the State. Other species 

 of this family occurring m Lake Michigan have been found only in 

 the deeper waters outside our limits. 



Family III. SCLENID.E. 



Genus 3: Haploidonotus, Kafinesque. 



Fresh-water Drums. 



3. Haploidonotus firunnkns, Baf. — Sheepshead ; Drum ; ^yHITE 



Perch ; Croaker. 



This species occurs in Illinois only in the great lakes and in 

 rivers, occasionally in spring linding its way into creeks tributary 

 to the Illinois and the Ohio. 



