G. A. BENTALL, 



NATURAL SCIENCE ESTABLISHMENT 

 (ENTOMOLOGY), 



Dudley House, Southampton St., Strand, London, W.C.2. 



ENTOMOLOGICAL SUPPLIES OF ALL KINDS. 



Reduction in Prices of Glass-bottomed Boxes. 



U" If If 1^" 24" 2i" 3,V' 



616 619 7/6 8:g 916 10/6 14/6 doz. 



7d. 7y. 8d. 9d. lOd. ltd. i/3 each. 



JVeiO material in Hymeiwptera, Hemiptera-Homoptera, Orthoptera, Odonatd, and 



Dipt era from the West Indies and British Guiana. 



Large Collection of African Cetonids and Longicorn Coleoptera just received. 



New Section. — Palaearctic and Exotic Birds' Skins and Eggs, also Eeptiles. 



[Scptfinber. 1921. 



REVISED PRICES FOR BACK VOLUMES. 



1st Series, LS64 -1889.— Parts, 3/6 net each ; Volumes, 22/6 iK-t, 

 Vols. 1 to 25. bound 3/6 extra. 



These can be obtained in many cases in complete Volumes. Many of the 

 single parts can also be supplied separately. Particulars on application 

 to the Publishers. 



2nd Series, 1890-1911-.— Parts, 2/6 net each ; Volumes, 20/- net each, 

 Vole. 1 to 25 (Vols. 26 to 50 of the entire Series). bound 3/6 extra. 



3ri> Series, Vol. ] (1915).— Parts, 2/6 net each ; Vols. 17/6 net each, 



bound 3/6 extra. 



„ 2 (191G).— „ 2/6 net each ; Vols. 17/6 net each, 



bound 3 6 extra. 



„ 3(1917).— „ 2/6 net each ; Vols. 17/6 net each, 



bound 3 6 extra 



„ 4(1918).— „ 2/6net each; Vols. 17/6 net each, 



bound 3/6 extra. 



\, 5 (1919).— ., 2 '6 net each ; Vols. 17/6 not each, 



bound 3,6 extra 



., 6(1920).— „ 2 6 net each ; Vols. 17/6 net each, 



bound 3, 6 extra. 



Subscription for 1921 (payal)le in advance), 15 - nei, 2)ost free. 



Cloth cases for binding the 1920 Volume can be supplied at 2 - net, post free. 

 All applications for the above should be made to — 



Messrs. GURNEY & JACKSON, 33 Paternoster Row, London, E.C. 4. 



NATURAL HISTORY. 



We keep in Stock everything required by 



COLLECTORS OF BIRDS' EGGS, INSECTS, 

 PLANTS, Etc, 



CATALOGUES FREE. 



WATKINS & DONCASTER, 36 Strand, London, W.C. 2, England 



