Index to Vol. I, 



599 



Page 

 Mytilus polymorphus, found in 



the Thames 584 



Naiades, Lamarckian, on the pro- 

 priety of uniting them all under 

 one generic name, by G. B. 



Sowerby 53 



Natica collaria 563 



monilifera 563 



Patula 60 



Necker, Professor, catalogue of 

 Birds found in the vicinity of 



Geneva 89 



Necrodes osculans 537 



Nerita glaucina 563 



Neritina Corona, &c. — Mr. Gray 



on, in reply to Mr. Swainson. 523 

 Nerves, Optic, Dr. Wollaston oh 



their semi-decussation 269 



Nicania crmala 119 



Nomenclature of Entomology, 



Rev. W. Kirby on 429 



of the Gryllina of Mac 

 I-eay, — Remarks on, by 



the same 429 



of Ornithology, Observa- 

 tions on, by N. A. 



Vigors,Esq 180 



Nucula arctica 119 



Nyctinomus, on a new species of 

 fiV. BrazUiensis,) by M. I. G. 

 St. Hilaire 233 



Odier, M. a. — On the chemical 



composition of the corneous 



• parts of Insects, with Remarks 



and Experiments by J. G. 



Children, Esq 101 



CEstrus 277, 567 



Oistros of the Greeks, and Asilus 

 of the Romans, W. S. Mac- 

 Leay, Esq. ou 277, 566 



Ou^-hidium, Rev. L. Guilding,on 



the genus 131, 563 



occidentale 564 



Oniscia, a new genus of shells . . 573 

 cuncellulu ib. 



Onthophogus igneu.s 538 



jOrgunizatioii, piaceiital, vestiges 

 of, andofuii unil)ilicus, disco- 

 vt-red ill a FfPtus of the Didel- 

 phis Virgiaiaiia, by M. E. G. 

 St. Hilaire 403 



Oriolus Galbula, shot in Eng- 

 land 278 



Ornithology, Observations on its 

 present state in this Country, 



by \V. SwairiHon, Esq 289 



Skclchc!, in, by N. A. 

 Vigors, Esfj 308 



Page 



Ornithology, Observations on its 

 Nomenclature, by N. A. 



Vigors, Esq 180 



Ovula 75 



Oysters, on their food 580 



Pachygaster Leachii 571 



Panagaeus tomentosus 337 



Pangonias and Bacco Mr. Bur- 



chellon 419 



Patella caerulea and pellucida, 



shewn to be identical 420 



Patella compressa and miniata, 



shewn to be identical . . 420 



Pecten vitreus 120 



Pelidnota cyanipes 541 



Peneroplis, its structure 222 



Phalangista 574 



Phanasus Kirbii 539 



Phengodes flavicollis 45 



testaceus 45 



Pholades, Mr. Gray on their 



Structure 406 



Phoxichilus proboscideus 1 19 



Picus Melanopterus 556 



Pitta versicolor 468 



Platycercus, a genus of Psittaci- 



dee 527 



auriceps 531 



pacijicus 529 



Ulietanus 633 



Plesiosaurus, Rev. W. D. Cony- 



beare on 280, 287, 567 



PoUontes, its structure 222 



Polyparia, Fossil, new genus — 

 — ( Thamnasteria Lamorouxii. ) 

 Memoir on, by M. Le Sauvage 231 

 Pontia Daplidice, captured in 



England 571 



Procellaria, new species of, Mr. 



C. Bonaparte on 425 



Prout, Dr., on the acid and sa- 

 line matters in the stomachs of 



uniniuls 129 



Psittaoida! 526 



Piittacula Kulilii 412 



Psitlaciis pyrrhopterus 535 



Psyi-lwpora, a new genus of Bom- 



byciclai 118 



Ptilinopus, Si genus of Columbida; 473 



purpuriilus 474 



Ptiloris, a gemis of Meliphagida; 479 

 paradiseus 481 



Quinary ditlribullou of Nature, 



312, 586, 587 



