128 THE CANADIAN NATUALIST. [April 



contributed largely to the formation of limestone, since Prof. Jones 

 remarks that he has detected its structure abundantly in chips of 

 ' Irish-green ' marble from marble-works in London ; and Mr. 

 Sanford represents a somewhat extensive bed of limestone in the 

 Binabola Mountains, as abounding in it throughout, though not 

 always in a good state of preservation. J. w. D. 



NOTES ON CERTAIN SPECIES OF NOYA-SCOTIAN 

 FISHES. 



By J. Matthew Jones, F.L.S. 



The Yellow Perch. — Percajiavescens. 



Perca flavescens Cuv. et Val., ii, p. 46. 



" Rich., Faun. Bor. Amer., p. 1, pi. 74. 



" Storer, Fishes of Mass., p. 5. 



" DeKay, N. Y. Faun., p. 3, pi. 1, fig. 1. 



" Holb., Ich. S. C, p. 2, pi. 1, fig. 1. 



" Gunth., Cat. Fishes, i, p. 59. 



Bodianus flavescens Mitch., Ph. Trans. N. Y., i, p. 421. 



This fish is very common in the fresh waters of this province, 

 and is similar in habit to the common perch of Europe. It is 

 sold in the Halifax market during winter in small bunches of a 

 dozen each at the rate of sixpence sterling per bunch, but it is 

 not much esteemed as food. 



Gunther, in his catalogue of the acanthopterygian fishes in the 

 British Museum collection, states his belief, after an examination 

 of the skeletons of this and the European P.fiuviatilis, that they 

 are merely varieties of one and the same species. 



Its geographical distribution is extensive, — being found in 

 nearly every part of North America. 



Sculpin. — Cottus Groenlandicus. 



Cottus Groenlandicus Cut. et Val., iv, p. 156. 



" « Rich, iii, pp. 46, 297, pi. 95, fig. 2. 



" " Storer, Fishes of Mass., p. 16. 



11 " De Kay, p. 54, pi. 4, fig. 10. 



" " Gunth., Cat. Fishes, ii, p. 161. 



" Scorpius Fabr., Faun. Grcenl., p. 156. 



This daring and voracious fish is very abundant on our shores. 

 It cares but little for the presence of man, and will not leave its 



