LIST OF PLATES. 413 



Plate LX. 

 The La Fayette (Leiostomus obliquus). 

 The Northern Barracuta (Sphvrsena boreahs). 

 The Banded Sand Launcc (.\mmodytes vittalus). 

 The Common Shad Sahnon (Corregonus clupeiformis). 



Plate LXI. 

 The Thresher Shark (Carcharias vulpes). 

 The Small Blue Shark (C. ceruleus). 

 The Dusky Shark (C. obscurus). 

 The Nurse (Scymnus brevipinna). 



Plate LXII. 

 The American Angel-fish (Squatina dumerili). 

 The Hammer-headed Shark (Zygasna malleus). 

 a. Underside. b. A tooth. 

 205. The Long-tailed Porbeagle (Lamna caudata). 

 a. Under side of the head. b. A tooth. 



Plate LXIIL 

 Fig. 206. The Mackerel Porbeagle (Lamna punctata). 



207. 1, Head of the same; 2, tail; 3, front tooth of the upper jaw , 4, do of 



the lower jaw ; 5, a lateral tooth. 



208. The Basking Shark (Selachus maximus). 



Plate LXIV. 

 Fig. 209. The American Hound-fish (Mustelus canis). 



209 a. Under side of the head of the same. 



210. The Spiny Dog-fish (Spinas acanthias). 



210 a. Under side of the head of the same. 



211. The Small Lamprey (Petromyzon appendix). 



Ptate IjXV. 

 Fig. 212. The Spotted Ray, male, (Raia ocellata). 



213. The Broad Sting Ray (Pastinaca maclura). 



214. The Whip Sling Ray, female, (P. hastata), ' 



a. Egg case with its embryo. . 



Plate LXVL 

 Fig. 215. The Prickly Ray, male, (Raia americana). 



216. The American Sea Lamprey (Petromyzon americanus). 



a. View of the mouth. 



217. The Cow-nose Ray (Rhinoptera quadriloba). 



rt. Tabular teeth of the same. 

 Fauna — Part 4 55 



