XIV 
CONTENTS. 
Page. 
Order IX. I’lagiostomi—Continued. 
Family Scylliodontidae____.___ 362 
Triakis_ 362 
Triakis semifasciatus- 362 
Family Mustelidae_ 364 
Mustelus felis_ 364 
Family Cestraciontidae..___-_ 364 
Cestiacion ...___-_________ 365 
Cestracion francisci_ 365 
Family Notidanidae_ 366 
Heptanchus maculatus_ 367 
Family Spinacidae_____—..— 367 
Acanthias__ 367 
Acanthias sucklii_ 368 
Sub-order II. Eajae__ 369 
Family Rhinobatidae_ 369 
lihinobatus_ 370 
Ehinobatus productus__ 370 
Family Torpedinidae__ 371 
Narcine californica_ 371 
Family Eaiidae_ 371 
Eaja. 372 
Eaja cooperi_ 372 
Uraptera_ 373 
Uraptera binoculata________... 373 
Family Myliobatidae- 374 
Rliinoptera_ 374 
ltliinoptera vespertilio_ 375 
Order X. Dermopteri__„___ 376 
Sub-order. Marsipobrancbii s. Cyclostomi__ 376 
Family Petromyzontidae_ 376 
Petromyzon. 377 
1. Petromyzon tridentatus_ 377 
2. Petromyzon ciliatus_.....______... 378 
3. Petromyzon lividus_ 379 
4. Petromyzon plumbeus ..._ 380 
5. Petromyzon astori_ 380 
Ichthyomyzon_ 381 
1. Ichthyomyzon castaneus_ 381 
2. Ichthyomyzon hirudo_ 382 
Ammocoetes_ 383 
Ammocoetes cibarius____ 383 
Scolecosoma_ 384 
List of the plates_ 385 
Alphabetical index......—..... 389 
