IlfDEX. 



(ftnote), 551 ; piscatorius (ftnote), 



550. . 

 Oregonia, charae. of, 646. 

 Orieas (ftnote), 539. 

 Oreinus, 536, 573, 579; guttatus 



(ftnote), 540; Hodgsonii (ftnote), 



540 ; maculatus (ftnote), 540 ; pla- 



giostomus, 540 ; Eichardsonii, 540 ; 



sinuatus, 540. 

 Oribata Lucasii, 121 ; triangularis, 



121 ; sp. ?, 121. 

 Oribatidse (arctic reg.), 121. 

 Oriolus striiitus, 687. 

 Ornithology of New Guinea, 626, 685. 

 Ornithorhynchus, 411, 413. 

 Osphromenus, 562, 565, 572, 574, 578. 

 Osten-Sacken, Baron von, report on 



arctic Diptera, 116. 

 Osteobrama (ftnote), 538 ; cotio 



(ftnote), 550 ; rapax (ftnote), 550. 

 Osteochilus, 537, 575, 579 ; cepbalus, 



543 ; chalybeatus, 543 ; Neilli, 543. 

 Othonia, charae. of, 665. 

 OthoniniE {Dana, Stimps.), 665. 

 Oxygaster (ftnote), 538. 

 Oxyrhyncha, or Maioid Crustacea, E. 



J. Miers on, 634. 

 Oxytelus alutaceifrons, 530. 



Pachnephorus Bretinghami, 256 ; 



Lewisi, 257 ; porosa, 257 ; tori'idus, 



256. 

 Pachycephala leucogastra, 631. 

 Pachystomus (ftnote), 538. 

 Pachystroma, 214, 223 ; antiqua, 224 ; 



(Syringostroma) densa, 223. 

 PagophUa, 400, 406 ; eburnea, 400. 

 Palseacis, 232 ; compared with Sti'oma- 



topora, 233. 

 Pamera bilobata, 484; pagana, 482, 



484. 

 Panchax (ftnote), 535 ; Bunhanani 



(ftnote), 536 ; cyanophtlialmus 



(ftnote), 585; Kuhlii (ftnote), 536; 



nielanopterus (ftnote), 536. 

 Pangasius, 562, 578. 

 Pangio (ftnote), 539. 

 Panopea plicata, 421 ; var. carinata, 



421. 

 Paradanio (ftnote), 538 ; aurolineatus 



(ftnote), 552 ; elegans (ftnote), 552. 

 Paradisea raggiana, 687. 

 Paralaubuca (ftnote), 538. 

 Paramaya {De Saan), 666. 

 Paramicippa, charae. of, 662. 

 Paramithi'ax, charae. of, 655, 656. 

 Parascela (n. gen.), charae, 252 ; cri- 



brata (ScJiauf. type), 253. 

 Parasites on arctic animals, 118. 

 Parathoe, charae. of, 666. 



Parker, Prof. W. K., on skull of Urode- 

 lous Amphibia, 717. 



Parkeria, 194, 227, 228. 



Parthenope, charae. of, 668. 



Parthenopidse, charae. of, 641, 667 ; 

 and Subdiv., 668, 669, 670. 



Parthenopinse, 641, 668, 669. 



Parthenopoides, charae. of, 672. 



Paryphes flavicoUis, 483 ; (Sundarus) 

 pontifex, 482 ; regalis, 483. 



Patella, action of, on chalk at Dover, 

 J. C Hawkshaw on, 406. 



Pecchiolia (or Verticordia) acuticostata, 

 420. 



Pecten similis, 419, 423. 



PectinateUa, 490, 497 ; magnifica, 505. 



Pectinura, 447. 



Pedicellarise, Dr. W. P. Herapath's re- 

 searches on, and terminology (ftnote), 

 433. 



Pelecus affinis (ftnote), 553 ; diffusus 

 (ftnote), 553. 



Pelia, charae. of, 659. 



Pelocoris binotulatus, 489 ; procurrens, 

 482, 489. 



Peloplastus {Gersf acker), 654. 



Pelopoeus flavipes, 676. 



Penthina, sp. ? (arctic), 116. 



Pericera, charae. of, 664. 



Periceridse, charae. of, 640; and Sec- 

 tions of, 662, 663, 664, 665, 666. 



Pericerinse, 662. 



Perichlamydium, 176. 



Peridinea of Melville Bay, 125. 



Peridineum acuminatum, 126 ; Michae- 

 Has, 126. 



Perilampus, 538, 563, 566, 579 ; atpar, 

 552 ; canarensis (ftnote), 552 ; cey- 

 lonensis, 553 ; fulveseens (ftnote), 

 553 ; guttatus (ftnote), 553 ; laubuea, 

 553 ; macropodus (ftnote), 552 ; 

 maerurus (ftnote), 549; mysoi-icus 

 (ftnote), 552; osteographus (ftnote), 

 552 ; perseus (ftnote), 553 ; psilo- 

 pteromus (ftnote), 552 ; reeurviros- 

 tris (ftnote), 549 ; retieulatus (ftnote), 

 552 ; striatus (ftnote), 552 ; thermo- 

 philus (ftnote), 549. 



Perinea (Dana), 664. 



Periophthalmus (ftnote), 559, 561, 

 578. 



Perla, 731. 



Petalospyris, 178. 



Pheidole pusiLla, 675. 



Phlogoenas jobiensis, 634. 



Phryganea (Caddis-flies), H. D. J. Wal- 

 lengren and E. M'Lachlan on, 

 726. 



Phryganea albifrons, 729, 732; azurea, 

 . 729, 732 ; bicaudata, 731 ; biliueata, 



