10 



CONTENTS. 



Page 



Ariciidae 353 



Key to Genera 354 



Niiinereis Blainville 354 



N. retusiceps, sp. nov 355 



Branchethus, gen. nov 357 



B. latum, sp. nov 358 



Paraonidae 361 



Key to Genera 362 



Goniadidae 362 



Key to Genera 363 



Synonymy of Genera 363 



Goniada Audoiiin & Milne Edwards . 363 

 G. eremita Audouin & Milne Ed- 

 wards 363 



Chaetopteridae 363 



Key to Genera 365 



Synonymy of Genera 365 



C'haetopterus Cuvier 366 



C. pergamentaceus Cuvier . . . 366 

 Spionidae 367 



Key to Genera 368 



Synonymy of Genera 369 



Boccardia Ha.swell 369 



B. polybranchia (Haswell) . . . 369 

 Disomididae 369 



Key to Genera 369 



Sj'nonymy of Genera 370 



Cirratulidae 370 



Key to Genera 372 



Cirrineris Blainville 372 



C. nesiotes, sp. nov 373 



Cirratulus Lamarck 374 



C. megalus, sp. nov. 375 



C. sinincolens, sp. nov. .... 377 



C. danielseni Hensen 379 



Audouinia Quatrefages 380 



A. filigera nesophila, subsp. nov. . 380 



Dodecaceria Oersted 381 



D. concharum Oersted 381 



Opheliidae 382 



Key to Genera 384 



Synonymy of Genera 385 



Kesun, gen. nov 385 



K. fusus, sp. nov 386 



Travisia Johnston 387 



T. profundi, sp. nov 387 



Scalibregmidae 389 



Key to Genera 390 



Synonymy of Genera 390 



Scalibregma H. Rathke 

 S. inflatum H. Rathke 

 Arenicolidae .... 

 Key to Genera 

 Arenicola Lamarck 



A. cristata Stimpson 

 Flabelligeridae . . . 



Key to Genera 

 Synonymy of Genera 

 Flabelligera M. Sars 

 F. infundibularis Johnson 

 F. affinis M. Sars 

 Brada Stimpson 



B. verrucosa, sp. nov. 

 B. irenaia, sp. nov. 

 Ilyphagus, gen. nov. 

 L hythincola, sp. nov 

 1. pluto, sp. nov. . 

 I. ascendens, sp. nov. 



Sternaspidae . . . 

 Sternaspis Otto 

 S. fossor Stimpson 

 S. maior, sp. nov. 



Maldanidae 



Key to the Subfamilies and 

 Synonymy of Genera 

 Petaloproctus Quatrefages 

 P. crenatus, sp. nov. 

 Maldanella Mcintosh 

 M. fibrillata, sp. nov. 

 Sonatsa, gen. nov. 

 S. meridionalis, sp. nov. 

 Gen. et .sp. ? . . . 



Ammocharidae 



Terebellidae .... 

 Key to the Subfamilies 

 Synonymy of Genera 

 Terebella Linne 

 T. panamena, sp. nov. 

 Nicolea Malmgren 

 N. taboguillae, sp. nov. 

 N. galapagensis, sp. nov 

 N. profundi, sp. nov. 

 N. latens, sp. nov. 

 Eupolymnia Verrill . 

 E. regnans, sp. nov. . 

 E. insulana, sp. nov. 

 Thelepus Leuckart 

 T. pericensis, sp. nov. 



and 



Genera 



Genera 



Page 

 391 

 392 

 392 

 394 

 394 

 394 

 394 

 396 

 397 

 397 

 397 

 397 

 399 

 399 

 400 

 402 

 402 

 403 

 403 

 404 

 405 

 405 

 , 406 

 407 

 409 

 . 410 

 . 410 

 . 410 

 , 412 

 . 413 

 . 415 

 . 416 

 . 418 

 . 418 

 . 418 

 420 

 . 423 

 . 424 

 . 424 

 . 425 

 . 425 

 . 427 

 . 429 

 . 430 

 . 432 

 . 433 

 . 434 

 . 437 

 . 437 



