LIST OP ABBREVIATIONS. 
XXV 
Nat. Notes— Nature Notes, The Selborne Society’s Magazine (Britten : 
London). 
Nat. Ver. Haarlem — Natuurkundigc Verhandelingen van de Hollandsclie 
Maatschappig der Wetenschappen te Haarlem (Haarlem). 
Nat. Ver. Utrecht — Natuurkundigc Verhandelingen Provinciaal 
Utregtsch genootschap van Kunsten en Wetenschappen (Utrecht). 
Naturalist — The Naturalist: Journal of tho Yorkshire Naturalists’ 
Union, &c. A Monthly Journal of Natural History for North of 
England (Roebuck & Clarke : London & Leeds). 
Nature — Nature (London). 
Naut. — The Nautilus (Pilsbry & Averell : Philadelphia). 
Neujahrsbl. Naturf. Ges. — Neujahrsblatt herausgegeben von der Natur- 
forschenden Gesellschaft (Zurich). 
Nor. Selsh. SIcr. — K. Norske Videnskabernes Selskabs Skrifter (Thrond- 
jhem). 
Notes Leyd. Mus. — Notes from the Royal Zoological Museum of tho 
Netherlands at Leyden (Jentink). 
Notizbl. Ver. Erdh. Darmstadt — Notizblatt des Vereins fur Erdkunde zu 
Darmstadt. 
Nouv. et faits — Nouvelles et faits divers (De Marseul : Paris). 
Nunq. ot . — Nuuquam otiosus (Schaufuss : Dresden). 
Nyt. Mag. Naturv. — Nyt Magazin for Naturvidenskaberne (DanielsSen et 
alii : Christiania) . 
(Efv. Ah. Fork. — CEfversigt af k. Vetenskaps Akademiens Forhaud- 
lingar (Stockholm). 
(Efv. Finsha Fork . — CEfversigt af Finska Vetenskaps Societetens For- 
handlingar (Helsingfors). 
Orn. & Ool. — Ornithologist & Oologist (Pawtucket, R. I.). 
Ornis — Ornis : Internationale Zeitschrift fur die gesammto Ornithologie 
(Blasius & Hayek : Vienna). 
Orvos-termcsz. Izrtesito . — Orvos-termeszettudomanyi lilrtesitb (Kolozsvar 
= Klausenberg). 
Ottawa Nat . — The OttaAva Naturalist. The Transactions of the Ottawa 
Field Naturalists’ Club (Ottawa). 
Overs. Dan. Selsh . — Oversigt over det k. Danske Videnskabernes Selskabs 
Forhandlinger (Copenhagen). 
P. Ac. Pliilad . — Proceedings of the Academy of Natural Sciences of 
Philadelphia. 
F. Am. Ac . — Proceedings of the American Academy of Arts and Sciences 
(Boston). (Also Mem.) 
P. Am. Jss. — Proceedings of the American Association for the Advanco- 
mont of Science. (Also Mem.) 
1891. [vol. XXVIII.] B 8 
