and vMitral.'i r<'(l<lisn, ilaslitMl \s\u\ liK'ick; iiiidl ainl cJilidai 

 rotldisli wliito: (]i)rsal liluisi!, Avilli lilack marks mi the ravs. 



Fiu-rays: — D. J -J: V. Hi; V. '.': A. 'J; r. IS. 



('. maoiJo.siis. T:esiuniv, .luiiin. Ac. Na!. Sr. Pliilad.. 1. ISIT. 

 p. io:>. 



Tliis l)eautiiul Sucker lives in tlie stony and rocky portion ^ 

 of (Mir creek.s, in places Avhere the current ripples. Specimens 

 may be seen resrini;- motionless vn a tiat roek at the bottom of 

 iht' water, and darting away \\ illi instant ra])i<lity uimn the 

 ajiproiich < »t man . The larger ones take slielter beneath roek-^ . 

 witli cavities on the und(>rside. and tliere they remain excei'i 

 when tempted away in search (it rinul. This species inh;d)its the 

 up[>er Potomac, the Patapsco, and seveial of our ci-ceks neui 

 Baltimore. 



Acad. Coll. 



',. ('. MACitoLKPTDOTrS. 



TIr' Cni'}). or The Large-Scaled Sucker. 



lM)dy compressed and fusilbrm, elevated on its anterior 

 part, rounded near the na]>e. Tlie large scales are disposeil 

 in a lozenge form. Tlie tlorsal tin is deeply emarginatcd. 

 The back is dark bine ; the sides are "wliitisli, witli yellowisli 

 retlections: the head is riMldish brown. 



Fin-rays:— I). M\ : P. IS: V. !t : A. *• : C. IS^. 



C. maci'olepidotus, Lesuenr, doui'ii. Ac. N;il. 8c. Pliihid. 

 1, iSlY; ]>. .14: Delvay, New York Isiuna, Pishes, p. 2ti-J, 

 pi. 77, li,g. 241'. 



This lincst of all our suckers Ijclongs to the region adja- 

 cent to the moutli of the l\lk Itivei-. A very fine s[)ecimen 

 was obtained near Specutia Island by 3.1aj(ir T. P. Ferguson. 



It is esteemed in the Philadei|ihi;i nuirkets, but is noi 

 brought to those of Jialtimori'. h wdi deserves to 1k' pro 

 tected and develojtcil. 



Acad. Coll. 



