REVIEW OF RAFINESQUE ON AMERICAN FISUES. 47 



17th genus, SEMOTILUS. (p. 8(5.) 



* 107th species, Silver-Spotted Chubby, SEMOTILUS ? NOTATU3, Se- 

 motUe tache. (p. 86.) 



Zygonectes notatus (Raf.) Jor. 

 Zygonectes olivaceus (Storer) Agassiz. 



This description evidently refers to some Cyprinodont fisb. Tlie 

 translucent spot on the head of Zygonectes is so characteristic and con- 

 spicuous in life that I have no doubt that Eafinesque had that common 

 species in mind. 



26th genus, SARCHIRUS. (p. 86.) 



1 108th species, Silver Ribbon-Fish. SARCHIRUS ? AHGENTEUS, Sar- 

 chire argente. (p. 86.) 



Unidentifiable. 



Description erroneous and insufficient. 



31st genus, ACCIPENSER. (p. 80.) 



109th species, Gourd-Fish Sturgeon, ACCIPENSER LAGENARIUS Etu:^ 

 geon gourde, (p. 86.) 

 ? Poly odon folium. 



Description second hand and erroneous. 



XXXVII. Genus, SAWFISH, PRISTIS, Poisson-scie. (p. 86.) 



110th species, Mississippi Sawfish, PRISTIS MISSISSIPPIBNSIS, Pois- 

 son-scie du Mississippi, (p. 86.) 



PrISTIS ANTIQUOJIUM Shaw. 



Passable description (of the saw only). 



t XXXVIII. Genus, HORNFISH, PROCEROS, Proceros. (p. 87.) 



* Breadth one-sixth of the length, brownish, jJiile beneath; head umall obtuse with a 

 large silver sjwt on the forehead before the eyes, jslws nearly eqnal; dorsal fin opposed to 

 the anal, tail oboval entire. 



It is found in the Cumberland Elver and the Little River, a branch of it. Coniniii- 

 nicated by Mr. Wilkins. It is rather doubtful whether it belongs to this genus, or Aliu- 

 tiilas, EuLllus, &c. It might perhaps be found to constitute a peculiar one by tlie small 

 mouth without lips, and the posterior dorsal fin. Vent posterior. Pectoral and abdom- 

 inal fins oboval. Eyes large. Length 3 inches; good bait for Perch, Bass, Red-ejes or 

 Ring-eyes, &c. 



t Entirely silvery, without bands or spots. 



Communicated by Mr. Owings. It is found in Licking River, Slate Creek, &c. 

 Length from two to three feet. It is called Pike, and may be one, but as it is described 

 without scales and very slender, I have added it to this genus until it is better known. 



t Apodal. Body elongated. Vent posterior. One dorsal fin opposed to the anal. 

 Mouth beneath transversal toothed. Snout protruded in a straight horn. Four spira- 

 cles or branchias on each side. 



Singular new genus of the family of Sharks or Jntacea, from which however it dif- 

 fers by the want of abdominal fins. There are two species of it ; the second, which I 

 have called Proceros vittatus, lives in Lake Ontario, and has longitudinal stripes. 



