INDEX. 



755 



(ftnote), 551 ; piscatorius (ftnotc), 

 550. 



Orogouia, charac. of, 64^. 



Orieas (ftnote), 539. 



Oreinus, 536, 573, 579 ; guttatus 



(ftnote), 540; Ilodgsonii (ftnote), 



540 ; maculatus (ftnote), 5 iO ; pla- 



giostomus, 540 ; E-icliardsonii, 5 10 ; 



sinuatus, 5-40. 

 Oribata Lueasii, 121 ; triangularis, 



121; sp.?, 121. 

 Oribatidae (arctic reg.), 121. 

 Oriolus striatus, 687. 

 Ornithology of J^evv Guinea, 626, 685. 

 Oniithorhyncbus, 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 ; cephalus, 



543 ; elialybeatus, 543 ; Neilli, 543. 

 Othonia, cluirac. of, 665. 

 Othoninse. (2>ana, Sthjips.), 665. 

 Oxygaster (ftnote), 538. 

 Oxyrhynclia, or Maioid Crustacea, E. 



J. Miers on, 634. 

 Oxytelus alutaceifrons, 530. 



Pachnephorus Bretinghami, 256 ; 

 Lewisi, 257 ; porosa, 257 ; torridus, 

 256. 



Pachycepliala leucogastra, 631. 

 Pachystomus (ftnote), 538. 

 Pachystroina, 214, 223 antiqiia, 224 ; 



(Syringostroma) densa, 223. 

 Pagophila, 400, 406 ; eburnea, 400. 

 Palgeacis, 232 ; compared with Stroma- 



topora, 233. 

 Painera bilobata, 484; pagana, 482, 



484. 



Panchax (ftnote), 535 ; Buchanani 

 (ftnote), 536 ; cyanophthalnms 

 (ftnote), 535; Kuhlii (ftnote), 536; 

 melanopterus (ftnote), 536. 

 angasius, 562, 578. 

 Pangio (ftnote), 539. 

 iPanopea plicata, 421 ; var. carinata, 



r 421. 



IParadanio (ftnote), 538 ; aurolineatus 

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

 aradisea raggiana, 687. 

 aralaubuca (ftnote), 538. 

 aramaya (i>e Haan), 666. 

 aramicippa, charac. of, 662. 

 Paramithrax, charac. of, 655, 656. 

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



brata {Schauf. type), 253. 

 Parasites on arctic animals, 118. 

 Parathoe, charac. of, 666. 



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



lous Amphibia, 717. 

 Parkeria, 194, 227, 228. 

 Parthonope, charac. of, 668. 

 Parthenopidee, charac. of, 641, 667 ; 



and Subdiv., 668, 669, 670. 

 ParthenopinjB, 641, 668, 669. 

 Parthenopoides, charac. of, 672. 

 Paryphes flavieollis, 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. 



Pectinatella, 490, 497 ; magnifica, 505. 



Pectinura, 447. 



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

 searches on, and terminology (ftnote), 

 433. 



Pelecus affinis (ftnote), 553 ; diffusus 

 (ftnote), 553. 



Pelia, charac. of, 659. 



Pelocoris binotulatus, 489 ; procurrens, 

 482, 489. 



Peloplastus {Gerstdc'ker),Qhi:. 



Pelopoeus flavipes, 676. 



Penthina, sp. ? (arctic), 116. 



Pericera, charac. of, 664. 



Periceridae, charac. of, 640; and Sec- 

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



Pericerinse, 662. 



Perichlamydium, 176. 



Peridinea of Melville Bay, 125. 



Peridineum acuminatum, 126 ; Michye- 

 lias, 126. 



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

 552 ; canarensis (ftnote), 552 ; cey- 

 lonensis, 553 ; fulvcscens (ftnote), 

 553 ; guttatus (ftnote), 553 ; laubuca, 

 553 ; uiacropodus (ftnote), 552 ; 

 macrurus (ftnote), 549 ; mysoricus 

 (ftnote), 552 ; osteographus (ftnote), 

 552 ; perseus (ftnote), 553 ; psilo- 

 pteronius (ftnote), 552 ; recurviros- 

 tris (ftnote), 549 ; reticidatus (ftnote), 

 552 ; striatus (ftnote), 552 ; thermo- 

 phUus (ftnote), 549. 



Perinea (Dana), 664. 



Pcriophthalmus (ftnote), 559, 561, 

 578. 



Perla, 731. 



Petalospyris, 178. 



Pheidole pusilla, 675. 



Phloga'nas jobiensis, 634. 



Phryganea'(Caddis-flies), II. D. J. Wal- 

 lengren and K. M'Lachlan on, 

 726. 



Phryganea albifrons, 729, 732; azurea, 

 729, 732; bicaudata, 731 ; bilineata, 



