LIST OF PLATES. 413 
Puate LX. 
Fig. 195. The La Fayette (Leiostomus obliquus). 
196. The Northern Barracuta (Sphyrena borealis). 
197. The Banded Sand Launce (Ammodytes vittatus). 
198. The Common Shad Salmon (Corregonus clupeiformis), 
Prats LXI. 
Fig. 199. The Thresher Shark (Carcharias vulpes), 
200. The Small Blue Shark (C. ceruleus). 
201, The Dusky Shark (C. obscurus). 
202. The Nurse (Scymnus brevipinna). 
Puate LXII. 
Fig. 203. ‘The American Angel-fish (Squatina dumerili). 
204. The Hammer-headed Shark (Zygena malleus). 
a. Underside. b. A tooth. 
205. The Long-tailed Porbeagle (Lamna caudata). 
a. Under side of the head. b. A tooth, 
Puate LXIII. 
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). 
Puate LXIV. 
Fig. 209. The American Hound-fish (Mustelus canis). 
209a. Under side of the head of the same. 
210. The Spiny Dog-fish (Spinax acanthias). 
210a. Under side of the head of the same. 
211. The Small Lamprey (Petromyzon appendix). 
Prate LXV. 
Fig. 212. The Spotted Ray, male, (Raia ocellata). 
213. The Broad Sting Ray (Pastinaca maclura). 
214. The Whip Sting Ray, female, (P. hastata). 
a. Egg case with its embryo. 
Prats LXVI. 
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). 
a. Tabular teeth of the same. 
Fauna — Parr 4. 55 
