Page:The Zoologist, 4th series, vol 1 (1897).djvu/567

Rh invented the term xenosite, i.e. stranger, for this condition of parasitism."

Eighteen parasites with their hosts are not only fully described, but illustrated by eight plates.

the 'Essex Naturalist,' Mr. Wilfred Mark Webb concludes his contribution on the "Non-Marine Molluscs of Essex." This is an excellent addition to our county faunas, and the summarized tabulation is as follows: —

The general classification is according to Lang's 'Text-book of Comparative Anatomy,' the families are those given by Fischer in his 'Manuel de Conchyliologie,' and the generic names used are those adopted by Pilsbry in his 4 Guide to the Study of the Helices.'

is the author, and Messrs. Betts & Sons, Lim., the publishers, of an unpretending brochure on 'Waxbills, Grassfinches, and Mannikins; a Hand-book for Beginners in Aviculture.' The author in his preface remarks:—"I should like to accentuate the fact that this is a hand-book for beginners. It does not pretend to contain much that is new, and experienced aviculturists will learn little or nothing from it. For this reason it treats more fully of the cheaper and commoner species, and rare birds are either unnoticed or dealt with very briefly." It will doubtless prove useful to the now fast increasing numbers of bird-lovers who with living specimens study the habits of their pets in captivity.

of Springfield, Brigg, has communicated with us on the subject of a proposed Dictionary of the Call-notes of British Birds. He writes:—"A short time ago I heard a bird-call which I did not recognize, beyond remembering that I had read of it a few days previously. I searched the volume without success, and the identity of the bird remained undecided. It then occurred to me that an alphabetical list of recorded