INDEX. 
INudibpanehiata.... ..coc..<ssea~cke 
Obelia commissuralis .-..728, 327, 334, 393, 
407, 411, 425 
PeiepHeNA ... 2.5. 727, 327, 334, 429 
dichotoma ....-..-. 728, 407, 411, 425 
SUID LO AUD),co5uie = wd ew sa tine or 727 
flabellata .... .....728, 390, 393, 497 
fusiformis....-.........407, 411; 424 
gelatinosa ...-.---- 728, 391, 393, 482 
geniculata .. .727, 334, 398, 407, 411, 
FORD ISSIUNA = wasn salam so os 728 
MONG Gnas ce cece s <a nates ta 727 
pyriformis .. ..-...727, 334, 390, 393 
species..-.-... 476, 363, 376, 447, 454 
Oceania lancuida .-..6... 2.5656 725, 454 
Ocean shores and outer cold waters, 
PUNISY (Olden etecreeiss oie see nce oes 484 
Ocellated flounder .....---....-.--. 519 
Ocypoda arenaria -. .545, 745, 336, 337, 364, 
534 
Ocypode pugilator ...--. See ewtaiictes 545 
Odostomia bisuturalis . ..656, 307, 353, 383, 
398, 423 
deallbatiat 2222 35.242-)50<8 656 
OMCUD) sotalol na 656 
fusca .656, 307, 333, 393, 423, 435 
impressa--660, 656, 333, 418, 423 
WS CUP Cale sm as 0's. s-is 656 
Iininoideays 2. s.5.6.24-4: 653 
producta .-.-- 656, 333, 418, 423 
seminuda .657, 418, 423, 428, 435 
trifida 656, 307, 333, 393, 418, 423 
Oligechsstay foc Leo. 2-23. ce cen 622 
Ommastrephes Bartramii....-...-.. 635 
illecebrosa- . ..634, 441, 453 
sagittatus........-.. 634 
Onchidoris pallida ...-..-.--...-.665, 495 
OMISCUSIE S35 Fotis 2 ser oes 5 Geis. vie) a 399 
Open coast, fauna of gravelly bot- 
MONON ers Oe tase ches sie os wd cleee 500 
Open coast, fanna of muddy bot- 
ROUNG teeter tee = fate nics 3) ai oi= 2 506 
Open coast, fauna of rocky bot- 
IIS eters © a= = Beha 2 eh athe sien 491 
Open coast, fauna of sandy bot- 
GOMNG cp te eee ere ete aia, Pot oe 500 
Open coast, fauna of rocky shores... 485 
Open coast, fauna of sandy shores... 489 
Ophelia simplex -.--..-.... 603, 319, 332, 410 
Ophidium marginatum .........--.- 338 
@Gphiocoma bellis.;..2~-..-525. .:.+.: 719 
NOP lob aah ee een. 720 
Ophioderma olivaceum............ 719 
Ophiolepis scolopendrica .........- 719 
Page 
Ophiolepis tenuis ...........2...... 720 
Ophiopholis aculeata.-...719, 400, 496, 517 
[Nee aS 719, 400 
secolopendrica ......... 719 
Optiore Wellig os... 52. ..2-.2 2. 719 
CLG hou, oar 720 
olivacea ..... 719, 363, 366, 427, 429 
OpBIUTOWMba ese mete e ose ek: 719 
Orchestia agilis .555, 314, 331, 336, 364, 462, 
464, 486 
longicommise Se cee) 42... 556 
megalophthalma ........ 556 
palustris ...............555, 468 
Oreynus' thunning 20-2. cseeesue, 516 
Orthagoriscus mola .-........-2.... 578 
Orthopyxis caliculata - ..726, 334, 408, 411, 
424 
WOUenIUI See ees eee 726 
Osteodesma hyalina..-...........- 672 
Ostrea Woredis. 2252 92s eaae ae 697 
Canadensists. 82) 1288. 697 
Ishandica cet 2eeek tr tee 696 
Virginiana -. .697, 748, 310, 333, 074, 
378, 388, 393, 401, 410, 424, 435, 453 
Wie pinion 697 
Ofion) Cuyieri: 2222 2eL etapa 580 
Outer coast, fauna of, on rocky 
SHORES ek thas oe Oe 485 
Outer coast, fauna of, on sancy 
SHORESE ie ethane eT UES! 489 
Outer coast, fauna of, on gravelly 
DO DONISS Se Re ee ee Lt eeee eee 500 
Outer coast, fauna of, on rocky 
NOPhOMIS os tera Ol 491 
Outer coast, fauna of, on sandy 
bottoms 500 
Outer coast, list of species of 
muddy potions: +2. 2... eee ee 
Outer coast, list of species of 
rocky bouoms <4... 2-2. cent 498 
Outer coast, list of species of rocky 
GHOTOS 222i 72c cen oS ee ee 487 
Outer coast, list of species of sandy 
and gravelly bottoms ........... 504 
Outer coast, list of species of sandy 
shores 
ESOn er oOUE nat te oor eee 490 
Oyster 4455 2 ee ee! 472, 355 
Oyster-beds in brackish waters, 
animals inhabiting ............- 472 
Oyster-beds in brackish waters, list 
of species inhabiting... ........ 476 
Ovntet-Graneseesuens....8.ecu sae 367 
Pagurus Bernhardus .............. 548 
lonpiGarpus ...2i22532-24. 549 
BOMIGHIIS ..-.< . cap aoee Aisi! ROSS 
