AD VE RTISEMENTS. 



CONTENTS. 



Editorial ... 



"What Constitutes a British Insect at the Present Time? — C. S. Gregson 



Geology of Miller's Dale— D. C. Steuart 



Sallow and Hazel, Early Budding and Flowering of 



The Pterophorina of Britain— J. W. Tutt, F.E.S. 



How do Animals Breathe ? — A. J.Jolley 



Air-Breathing Arthropods — Linnaeus Greening... 

 j Sule Skerry, Orkney Islands — George Ellison ... 

 ' Reports of Societies... 



Notes — Ianthina rotundata, Dictenidia bimaculata, 



Early Plusia Larvae, Dasypotia templi 

 Books Received ... ... ... 



Exchanges .. 



Notes to Correspondents ... 



BRITISH BUTTERFLIES 



n 



By C. W. DALE, F.E.S. 



With full Bibliography of all the species. Acknowledged to be the 1 

 and fullest account of the British Butterflies. 



Neatly Bound in Cloth, Six Shillings. 



Post Free from JOHN E. ROBSON, Hartlepoo 



Die Insekten-Borse 



jetzt vereinigt mit der „SamiIller-BdrSe" 



Offertenblatt , , 

 Jjenste aller Sammel-lnteressen. 



fur , ? Entoinologen u und ,,Saminler" das hervorragendste Blatt, welche 

 elehrenden Artikel sowie seiner internationalen und grossen Verbreitung 

 FOR £,"Verkauf und Umtausch aller Objekte die weitgehendsten Erwartunge 

 FOR §o 0 keabonnement l e hrendiirfte. Zubeziehendurch die Post (Zeitungsliste 

 an^erlags-Buchhandlung Frankenstein & Wagner, Leipzig, Augustu 

 bei Zusendung unter Kreuzband in Deutschland u. Oesterreich 1 IS 

 A very L? rn ^ es Weltpostvereins 1 Mk. 20 Pfg. = 1 Shilling 2 Pence == 1 Fr. 



Printed by Pearson . 



*9 



'/Ml 



