ADVERTISEMENTS. 



CONTENTS. 



PAGE 



The Entomological Year [continued).— Albert H. Waters, B. A. .. .. 113 



Jottings on Nomenclature. — Ignoramus. .. .. .. .. 117 



Easter at Hartford. — F. N. Pierce and G. H. Harker.. .. .. .. 120 



The Smooth Snake. — W.H.Warner. . . .. .. .. .. 123 



On the Variation of Species. — C.W.Dale. .. .. .. 125 



British Butterflies : their Decrease and its causes.— Frank G. Prescott-Decie 127 



Geological Notes. — John Dale, F.R. Met. S. .. .. .. .. 134 



* The Lepidoptera of London (continued.) — Eknest Anderson.. .. .. 137 



Obituary — Nicholas Cooke. — C.S.G. .. . .. .. .. .. 139 



Haggerston Entomological Society . . . . . . . . . . . . 142 



Society of Amateur Geologists .. .. .. .. .. . . 143 



Our London Letter .. .. .. .. .. .. 144 



Notes and Observations, &c^ . . . .* ... .. .. . . 144 



The Conductor solicits Articles, Notes and Observations, Exchanges, &c, 

 in any branch of Natural History, and will especially welcome communications 

 from " Young Naturalists." All papers intended for publication^ to be addressed 

 to John E. Bobson, Hartlepool. 



For the greater convenience of Subscribers in the London District, Mr. 

 Ernest Anderson, 171, Oassland i\oad, South Hackney, Secretary to the 

 Haggerston Entomological Society, has kindly consented to act as Agent for the 

 Young Naturalist. Subscriptions may be paid to him, or he will receive and 

 forward advertisements, or communications for publication. 



FOR BRITISH SHELLS (Marine, Land, and Fresh 

 Water) ; CRUSTACEANS ; ECHINODERMS ; 

 BIRDS' EGGS, &c, write to the "Tenby and South Wales 

 Natural History Depot," Tenby, Pembrokeshire. 



NEW SERIES, Permanently Enlarged. Price 4s. per Annum, post free. 



THE NATURALIST, 



A MONTHLY JOURNAL OF 



NATURAL HISTORY FOR THE NORTH OF ENGLAND. 



Conducted by 



Wm. DENISON ROEBUCK, F.L.S. , and Wm. EAGLE CLARKE, F.L.S. 

 The object of the Journal is the elucidation of the Natural History, Geology, and 

 Physical Features of the ten Northern Counties of England. 



All Communications should be addressed to the Editors :— 9, Commercial Buildhtgs, Park Roy/, LEEDS. 



Recent numbers contain, among others, the following Articles :— The Lepidopterous 

 Fauna of Lancashire and Cheshire— John W. Ellis, L.R.C.P. ; Bibliography of North of 

 England, papers for 1884 ; Strasbruger's New Investigations on the Process of Fertilization 

 in Phanerogams. — Thos. Hick, B.A., B.Sc. ; Merlins and their Training— H. T. Archer ; 

 Ornithology of Upper Coquetdale— John Cordeaux and Abel Chapman ; On a Mega- 

 lichthys from the Yorkshire Coal-field (Illustrated)— Prof. L. C Miall, F.L.S., F.CS. ; 

 The Marine Shells of Yorkshire— Rev. W. C. Hey, M.A. ; Additions to the Wensleydale 

 Flora. — F. Arnold Lees, F.L.S. ; Micro-palaeontology of the Northern Carboniferous 

 Shales— Geo. R. Vine. 



Printed by G. Pearson, 24, High Street, Hartlepool ; and published by Messrs. John 

 Kempster & Co., Bolt Court, 151, Fleet Street, London, E.C. 



