HISTORY OF THE FISHES OP MASSACHUSETTS. 291 



commences at the posterior superior angle of the operculum, and, curYing downwards 

 and backwards a few scales, pursues a straight course to the tail. 



''?^The dorsal fin is subquadrangular ; it arises at the middle of the body, not 

 including the caudal fin. The first rays are simple. 



The pectorals are just back of the inferior posterior angle of the operculum ; their 

 height is less than the length of the head. 



The ventrals are situated beneath the middle of the dorsal fin ; they are as high as 

 the pectorals. 



The anal fin is equal in height to the pectorals; it is rounded when expanded- 

 The first two rays are simple; the others are branched; the posterior rays are the 

 shortest. 



The caudal fin is deeply lunated ; the rays are articulated. 



The fin rays are as follows : _ D. 14- 16. P. 18. V, 10, A. 9. C. 18. 



Length, fifteen inches. 



Memarhs. During the spring and autumn this species is frequently met with in 

 Boston market, and in a mild winter they may be found there at almost any time. 

 They are most commonly brought here from Charles Eiver, Watertown ; and sometimes 

 attain the weight of five pounds. They are of but little value. Occasionally they are 

 brought into the city by the cart-load, and sold as the Mullet. 



New Hampshire, Peck. Massachusetts, Lesueue, Stober. New York, Pennsyl- 

 vania, CuviER. 



Oatostomus gibbosus, Lesiieur, 

 The Chub Sucker, 

 (Plate XXIL Fig. 4.) 



Catostomus gibbosus J Chub Sucker, Lestjbur, Journ. Acad. Nat. Sc, i. p. 92, fig. 



« « Gibbous Sucker, Stoher, Report, p. 88. 



« « Cuv. et Val., Hist. Nat.Poiss., xtii. p. 443. 



« « Stokee, Mem. Amer. Acad., New Series, ii. p. 420. 



« *' '' Synopsis, p. 168. 



Ldbeo gibbosus, Gibbous Chub Sucker, Dbkat, Report, p. IM, pi, 32, fig. 101. 

 Catostomus iubercuhtus, Lestjettk, Joum. Acad. Nat. Sc, i. p. 92, fig. 



« " Stobek, Report, p. 85. 



« « Homed Sucker, Dekat, Report, p, 199, pi. SI, fig. 97. 



'f « Cxiv. et Val., Hist. Nat. Poiss., xtii. p. 444. 



Color. The back and upper portion of tlie sides of this species, when first caught, 



