ADVERTISEMENTS. 



EXCHANGE. 



I have two fine specimens of the Death's Head Moth, also fine well stuffed specimens of 

 the House Sparrow (male), Marsh Tit, and Brambling Finch, to exchange for British 

 Birds Eggs. — A. Hartley, 15, Croft Street, Idle, near Bradford. 



Duplicates — Donatio, menyanthidis, D. thalassina, D semicuprea, Prasocuris avcta, 

 ErirJiinus nereis, Malachim -viridis, Clonus scropMZarice, C. Uatterue. Desiderata — 

 Numerous local species of Coleoptera. — G. A. Lewcock, 73, Oxford Road, Islington, N. 



DRAGON-FLIES. — Mr. W. Harcourt Bath, Ladywood, Birmingham, desires to 

 correspond with students of the Odonata, in all parts of the globe, as he is specially work- 

 ing up this group of insects. Specimens for figuring, in his forthcoming " Monograph of 

 British Dragon-flies," will be very acceptable. There is probably no class of insects so 

 neglected as Dragon-flies, and Mr. W. Harcourt Bath will be very pleased to assist any 

 one desirous of commencing their study. 



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