943 



Ousphaereu (Crust.) 716. 



Opeas 149, 151. 



Ophiacantha 122, 564. 



Ophiactis 122, 562, 564. 



Ophidia 36, 474, 540, 542, 544, S29. 



Ophincampis 564. 



Ophioceramis 122. 



Ophiochiton 122. 



Ophiocnida 564, 567. 



Ophiocoma 564. 



Ophioconis 122, 564. 



Ophiocten 564. 



Ophioglypha 122, 564, 614. 



Ophiolepis 564. 



Ophiolypus 122. 



Ophiomastns 122. 



Ophiomaza 564. 



Ophiomitra 122. 



Ophiomusium 122. 



Ophiomi/ia 236. 



Ophiomyxa 122, 56-1. 



Ophioneurus 92. 



Ophiopeza 122. 



Ophiophthirius 562. 



Ophiopluteus 613. 



Ophiopsis 200. 



Ophiopteron 564. 



Op /* iopyren 122. 



Ophlopyrgus 122. 



Ophiorcns 122. 



Ophiospita 564. 



Ophiostigma 564. 



Ophiothela 562, 564. 



Ophiothrix 564. 



Ophiotrichidae 562. 



Ophiolypa 122. 



Ophiozona 122. 



Ophiuroidea 122, 561, 563, 564, 567. 



Ophiijodendron 836. 



Ophryotrocha 397. 



Opi7/o 852. 



Opilionidae 851, 852. 



pisthobranchiata 141, 144, 643. 



Opisthodon 509, 510. 



Opisthoparia 191. 



Opisthoporus 146, 152. 



Opisthorchis 404, 664, 844. 



Oppclia 385, *95. 



Oppositae 74ti. 



Orbitolitcs 662. 



Orbulina 174, 554, 558. 



Orbulinella 323, 351. 



Orca 70, 312, 640. 



Orcella 577. 



Orchistoma 703. 



0?-cas 476. 



Oreophoroida 459. 



Oreophorus 460. 



Orgyia 751. 



Oribatidae 509. 



Oriolus 515. 



Ornithobius 52. 



Ornithophila 550. 



Orthayoriscus 405, 624. 



Orthezia 417. 



Ortheziola 417. 



Orifo's 877. 



Orthoceras 296. 



Orthoceratidae 295. 



Orthogenesis 241. 



Orthoptera 52, 53, 78, 229, 230, 267, 



332, 411, 698, 718, 719, 745, 748, 749, 



750, 803, 807, 815, 829. 

 Orthothetes 877. 

 Orygmatobothrium 164. 

 Oryzomys 579, 580, 636. 

 Oscarella 581, 582. 

 Oscularsaum (Spong.) 694. 

 Osculina 206. 

 Osmylidae 807. 

 Osphradium 643. 

 Osphranticnm 228, 713. 

 Ostalichus 469. 

 Osteolepis 196. 

 Osteorachis 201. 

 Ostodes 146. 

 Ostracoda 159, 160, 351, 374, 375, 602, 



604, 713, 803. 

 Ost-Spitzbergen 617, 689. 

 Os<rea 153, 532. 

 Ostreidae 153. 

 Oton'a 637. 

 Otariidae 637. 

 Otiotrema 661. 

 Otobothrium 47. 

 Otocysten (Gastr.) 684. 

 Otomitla 201. 

 Otopoma 150. 

 Ottonia 509. 

 Otostomus 469. 

 Onrcbia 476. 

 Ortftos 516, 639, 640. 

 Ovidae 638. 



Or/.s 104, 139, 354, 579, 638, 664. 

 Ovoceritren (Plathelm.) 403. 

 Ovocyten 109. 

 Oxy gn atha 151. 

 Oxyhexac ine 692. 

 Ozi/noticeras 386, 896. 

 Oxi/opes 828, 852. 

 xyopidae 852. 

 Oxyrhyncba 457, 571. 

 Oxyrrhopus 542. 

 Oxysoma 846. 

 Oxyspirura 124. 

 Oxystoma 457, 571. 

 Oxythyreus 416. 

 Oxyuridae 263, 568. 



is 49, 263, 265, 319, 447, 568, 661, 



830, 832, 846. 



Pachnodes 468. 

 Pachycondyla 294. 



