MUSEUM OF COMPARATIVE ZOOLOGY. 5 



Cottogaster tessellatus Putnam, MS. i860. 



Syn. Boleosoma tessellalum Thompson, App. Hist. Vt. p. 31, 1853. 

 (Xot of DeKay.) 



Boleosoma Olmstedi Agassiz, Luke Sup. pp. 299, .304. 1850. 



Syx. Etheostoma Olmstedi Storkk, 1842; Perca (Percina) minima 

 IIaldemax, 1812; Boleosoma tessellalum DeKay, 1842; Boleo oma tessi - 

 latum Agassiz, 1850; Boleosoma maculatum Agassiz, 1850 ; Boleosoma 

 Olmstedi Storer, 1853; Arlina effulgens Girard, 1859; Estrclla alro- 

 maculata Giraud, 1859. 



Hyostoma trausversum Putnam, MS. lsr,o. 



Syx. Poecilosoma transversum Abbott, Proc. Philad. Acad. Xat. Sci 

 XII. p. 32G. I860. 



Percina caprodes GlRARD, rroc. PhilacL Acad. Nat. Sci. XL p. C6. 1S59. 

 Syx. Scicena caprodes Kafinesque, 1818 ; Etheostoma caj>rodes K.v- 

 eixesque, 1820; Perca (Percina) nelndosa IIaldemax, 1842; Pileoma 

 semifasciatum DeKay, 1842; Percina bimaculata IIaldemax, 1843 ; Ethe- 

 ostoma nehulosum Storer, 184G ; Etheostoma semifasciatum Storer, 184G ; 

 Etheostoma bimaculatum Storer, 1846; Pileoma caprodes Agassiz, 1850; 

 Pileoma Zebra Agassiz, 1850 ; Etheostoma Zebra Agassiz, 1850 ; J'ercina 

 nebulosa Girard, 1859; Percina semifasciata Girard, 1859; Percina 

 Zebra Girard, 1859. 



PleUl'Olepis Agassiz, MS. 18G0. (Nov. gen.) 



Body cylindrical, flattened above, and slightly tapering to the base of the 

 caudal. Mouth terminal. Dorsal fins distinctly separated, of equal height, 

 first longer than the second. Anal fin as large as the second dorsal, and 

 placed opposite. Caudal slightly emarginate. Pectorals and ventrals long 

 and pointed. Scales deeply imbedded and placed wide apart. The row con- 

 taining the lateral line and the one each side of it are the most conspicuous. 

 Cheeks and operculum covered with scales. Lateral line straight. The 

 following is the only known species : — 



Pleurolepis pellucidus Agassiz, MS. I860. (Nov. sp.) 

 Syx. Etheostoma pellucidum Baird, MS. 1853. 



From ten to fourteen small square olive blotches on the back and on 

 each side, the rest of the body of a light cream-color; fins unicolored. 



The last twenty species mentioned belong to the Etiieostomata, a fam- 

 ily of small fishes inhabiting the fresh water.- of North America east of the 

 Rocky Mountains, no species of which has thus far been discovered else- 

 where. This family was first characterized by Professor Agassiz, in 1850, 

 in " Lake Superior," p. 298. 



A.mblodon grunniens Rafixesque, Ichth. Ohien. p. 24. 1S20. 



