Of the British species not as yet found in Essex _Trichoniscus vividus_ has at present only been recorded from Ireland; _Philoscia couchii_ and _Armadillidium depressum_ have not been collected except in the extreme south west of England, while _Metoponorthus cingendus_ has hitherto only been noticed in Devonshire and Ireland. The other four species, with the exception of _Porcellio rathkei_, which is well distributed in west Middlesex (and might have been expected to occur in Essex), are still rare. In fact, for _Trichoniscoides albidus_ but two British localities are known; for _Haplophthalmus mengii_ three (two in England and one in Ireland); while _Armadillidium pulchellum_ has only been recorded from two or three places. In other counties quite as satisfactory results were obtained as in Essex--a systematic search in Buckinghamshire brought to light at Eton three species which at the time had not been recorded from the British Isles, while in Middlesex, no less than a dozen species were found at Hanwell. Since part of this contribution was printed our attention has been drawn to some notes by the Rev. Canon Norman and Professor G. S. Brady (50a). These bear out the remarks which have already been made, for among the species found by Professor Brady in the north of England were _Trichoniscoides albidus_, _Haplophthalmus mengii_, _Porcellio rathkei_, and _Armadillidium pulchellum_. In one of Canon Norman's previous papers (50--1903) he claims to have added the second species to the British list, and in the notes in question a similar claim is made with regard to the first and third. It should, however, be pointed out that all three of them were found in Buckinghamshire in 1899 by Mr. Webb, and that they were exhibited at the Nature Study Exhibition held in London in August, 1902. A specimen of _Armadillidium pulchellum_ from Matlock was sent to us by the Rev. T. R. R. Stebbing in January, 1904, and was found, we understand, some considerable time previously. It only remains for us to express our hearty thanks to the numerous friends and correspondents who have given us their ready help. The names of these have been printed in the text, but we would like to mention more particularly Dr. Calman, of the British Museum (Natural History), Monsieur Adrian Dollfus, Mr. Roland Matthams, the Rev. Canon Norman, Dr. Scharff, the Rev. T. R. R. Stebbing, and Miss Willmott. FOOTNOTES: [1] "The Non-Marine Molluscs of Essex," by Wilfred Mark Webb; ESSEX NATURALIST, Vol. x. (1897), pp. 27-48 and 65-81. [2] The numbers in brackets refer to papers mentioned in the Bibliography at the end. [3] It should be pointed out that the methylated spirit now sold in the shops contains mineral naphtha and goes milky on the addition of water. Permission can be obtained from Somerset House to buy what is still called "ordinary methylated spirit," but at present five gallons has to be purchased at one time. BIBLIOGRAPHY.