280 JOURNAL OF CONCHOLOGY, VOL. 9, NO. 9, JANUARY, ig66. 



Records of the Australian Museum, vol. 3, no. 5, 1899. 



" A review of the systematic position of Zemira Adams " [referred to the 



Struthiolariidse], by Charles Hedley. 



Cleveland Naturalists' Field Club. Record of Proceedings, 1896-98. 



"List of the mollusca of the Cleveland district" [includes both L.F.W. and 



marine species], by John Hawell. 



Transactions and Annual Report, Manchester Microscopical Society, 1898. 

 " The Genitalia and Radulse of the British Hyalinia " [anatomical notes with 



pi. 4 and 5], by W. Moss. 



The Naturalists' Journal, vol. 8, no. 81-89, Mar. -Nov., 1899. 



"Zoned shell {Helix virgata)"; "Tooth shells {Dentalium)." "Shrub shell 



(Helix arbustoruni)." " Land shells from Kilmore" [6 spp. and varr.]. "A natural 



history of cuttles, snails, slugs, &c." 



Chicago Academy of Sciences, Fortieth Annual Report for the year 1897. 

 " Report of the natural history survey, " by C. S. Raddin [plate of Unionidae 



and of Polygyra\ 



Journal and Proceedings of the Royal Society of New South Wales, 

 vol. 32 for 189S. 

 " The blue pigment in coral (Heliopora ccencled) and other animal organisms," 



by A. Liversidge [Mollusca, p. 266]. 



" Synopsis of the Recent and Tertiary Leptonacea of North America and 

 the West Indies." by William H. Dall. (Proc. U.S. Nat. Mas., vol. 21, 

 no. 1 1 77, p. 873-897, pi. 87, 88, 1899) [Gives a list with localities and descrip- 

 tions and figures of upwards of a dozen new species]. 



Large Colony of Vertigo antivertigo Drap. in Co. Down. — Five years 

 ago while sifting a mass of flood debris from the Lagan, near Belfast, I noticed a 

 good many specimens of Vertigo, and resolved upon a careful search along the 

 margin of the river-canal higher up to see if their habitat could be discovered. 

 Several visits failed to give more than a few specimens, mainly V. pygmcea, until 

 this month (March, 1899) on a very cold day following three weeks' dry weather, when 

 Messrs. H. L. Orr, Arthur W. Stelfox and myself were fortunate enough to find a 

 very large quantity of V. antivertigo. The locality was Shaw's Bridge, near Belfast, 

 amongst clumps of rushes in a marshy corner, which is much subject to flooding after 

 heavy rains. We cut off a section of earth with the base of the stems about two to 

 three inches thick across the mass close to the ground, and about ten by six inches in 

 area ; of this I took half and from it obtained seventy specimens, all alive, and in 

 clean, nice condition; while Mr. On obtained about as many more from his portion 

 of the mass. We were rather surprised at this result, as on superficial examination 

 twenty to thirty more were all that could be expected. Other clusters of rushes seemed 

 equally rich, and cutting off some half-dozen bunches of stems as large as could be 

 held in the hand, we shook them over a newspaper, and on subsequent sifting 

 obtained 330 specimens, making over 400 in all as my share, from an area not larger 

 than thirty by twenty feet. With these were a larger number of Carychium mini- 

 mum, a few Helix pygmeva, and many young Succinea (sp. ?). V. antivertigo seems 

 able to survive floods better than the other species, and indeed while washing the 

 roots I had to be careful, as most of them came to the surface and floated, soon 

 attaching themselves very firmly to some bit of grass or rush. This corner at the 

 bridge is a place where large quantities of debris collect during floods, and may be 

 a haven of rest for this particular species and Carychium minimum, while too swampy 

 for V. pyg'/uea. The latter was found to the extent of forty specimens in a mass of 



