HISTORY OF THE FISHES OF MASSACHUSETTS. 213 



The anal fin commences a short distance back of the dorsal, is of a form some- 

 what similar to that fin, and terminates upon the same plane with it. 



The caudal fin, composed of stout fleshy rays, is nearly straight at its posterior 

 extremity. The distance between the extremities of the outer rays is equal to the 

 height of those rays. 



The fin rays are as follows : — D. 32. P. 22-24. V. 5. A. 28-30. C. 18. 



Length, seven and a half inches. 



Remarks. This may be an immature fish which I have described ; but I think 

 it must be a new species. According to Dekay, three species of Remora are observed 

 upon the coast of New York, the Albicauda, Naucrates, and Remora. I think it 

 cannot be one of these species. It has not the broad longitudinal band, nor the 

 white tips at the extremities of the caudal fin, noticed in the Albicauda, nor has 

 it the twenty or twenty-three plates observed in the disk of that species. From 

 the Naucrates it differs in its color, and the number of plates in the disk. 



In the Remora the disk extends to the end of the pectorals ; in this species it 

 terminates at the commencement of the posterior half of these fins. In this species 

 the dorsal and anal fins are not coequal ; the dorsal fin of the Remora has twenty- 

 one rays, while in this species it has thirty-two ; the anal fin in the Remora con- 

 tains twenty rays, the same fin in this species has twenty-eight rays. The caudal 

 fin of the Remora is crescent-shaped. 



I have seen but two specimens of this species. One of these was received from 

 the late Dr. Yale, of Holmes's Hole, and served for the description contained in my 

 " Report." The other was taken at Wellfleet, in August, 1844. One of these measured 

 five inches and a half, and the other seven inches and a half. 



APODES. 



No ventral fins. 



FAMILY XXII. ANGUILLID^E. 



Body very much elongated and cylindrical, for the most part of a serpentine figure. 

 Scales scarcely apparent, being imbedded in a soft and thick skin. Air-bladder of 

 various singular forms. No ccecal appendages. 



