Index to Vol. I. 



599 



Page 

 Mytilus polymorphic, 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 



Neck er, 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 crenata 119 



Nomenclature of Entomology, 



Rev. W.Kirby on 429 



of the Gryllina of Mac - 

 Leay, — Remarks on, by 



the same 429 



of Ornithology, Observa- 

 tions on, by N. A. 



Vigors, Esq 180 



Nucula arctica 1 19 



Nyctinomus, on a new species of 

 (N. Braziliensis,) 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 



OEstrus 277, 567 



Oistros of the Greeks, and Asilus 

 of the Romans, W. S. Mac- 

 Leay, Esq. on 277, 566 



Onchidium, Rev. L. Guilding, on 



the genus 131, 563 



occidentale 564 



Oniscia, a new genus of shells . . 573 

 cancellata ib. 



Onthophagus igneus 538 



Organization, placental, vestiges 

 of, and of an umbilicus, disco- 

 vered in a Fcetus of the Didel- 

 phis Virginiana, by M. E. G. 

 St. Hilaire 403 



Oriolus Galbula, shot in Eng- 

 land 278 



Ornithology, Observations on its 

 present state in this Country, 



by W. Swainson, Esq 289 



Sketches in, by N. A. 

 Vigors, Esq. , 308 



Page 

 Ornithology, Observations on its 



Nomenclature, by N; A. 



Vigors, Esq 180 



Ovula 75 



Oysters, on their food 580 



Pachygaster Leachii 571 



Panagseus tomentosus 537 



Pangonias and Bacco Mr. Bur- 



chell on 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 



Phanceus 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- 



das 527 



auriceps 531 



pacificus 529 



Ulietanus 533 



Plesiosaurus, Rev. W. D. Cony- 



beare on 280, 287, 567 



Pollontes, 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 



animals 129 



Psittacidae 526 



Psittucula Kuhlii 412 



Psittacus pyrrhopterus 535 



Psychopora, a new genus of Bom- 



bycida? 118 



Ptilinopus, a genus of Columbidae 473 



purpuratus 474 



Ptiloris, a genus of Meliphagidae 479 

 paradiseus 48 1 



Quinary distribution of Nature, 



312, 586, 587 



