JACKSON AND TAYLOR : TALUDESTRINA TAYLORI. II 



During the whole of our observations, we failed to notice the pre- 

 cise method of copulation, though we repeatedly saw individuals in 

 close contact, fully extended, and perfectly quiescent for several 

 minutes at a time, and we have a strong suspicion that the act of 

 reproduction took place on these occasions. 



It appears, then, from our observations that P. taylori differs from 

 other species of Paludestrina (Avhich are acute-spired, and viviparous) 

 in having a shell very blunt at the apex, and in beina; oviparous, and 

 in these important characters it agrees with the North American 

 genus Amnicola, to which we think it ought in future to be referred. 



Our best thanks are due to Mr. A. D. Darbishire for kindly making 

 the accurate drawings which accompany this paper, and to Messrs. 

 E. A. Smith, J. T. Marshall, E. v. Martens, R, Standen, and J. Cosmo 

 Melvill for information and suggestions. 



Paludestrina anatina Drap. new to Britain. — Early in the present year I 

 received from Mr. Claude Morley, F. E.S., of Ipswich, a small box of shells which 

 he had gathered on May 19th, 1898, from amongst lacustrine "rejectamenta on the 

 margin of Oulton Broad, Suffolk. The shells were all dead, and included a few 

 exaiiiples of Paludestrina jenkinsi Smith, as well as of various common land and 

 freshwater species, but the bulk of the material consisted of a small Bythi}tia-\iV.Q 

 shell which was new to me, and which was subsequently identified by Dr. Boettger 

 as Pseud amnicola anatina Drap. This species has a wide range abroad, and occurs 

 in the south of France, Spain, Portugal, Morocco, Balearic Isles, Corsica, Italy, 

 Sicily, and Malta. Westerlund also quotes a locality "Adros" : if, as I suppose, 

 this is a misprint for "Andros," the species may be said to inhabit all the south of 

 Europe. Dr. Boettger questions its distinctness from Paludestrina (or as he prefers 

 to call it Pseitdamnicold) similis Drap., and says that he finds great difficulty in 

 separating the two forms. If our recently extinct species from the Thames marshes 

 is really the P. similis of Draparnaud, I do not follow him in this. P. sitnilis with 

 its large swollen body-whorl and short spire seems abundantly distinct from P. 

 anatina, which has a moderate body-whorl and a longer and somewhat turreted 

 spire. There will be the same speculation over the appearance of this shell in 

 Britain as there was over that of P. jenkinsi and P. taylori. The proximity of 

 Lowestoft is suggestive, but I do not know whether it has any trade with the 

 Mediterranean. — J. R. le Brockton Tomlin {Read before the Society, April 8, 

 1903)- 



Jaminia muscorum m. sinistrorsum. — Whilst sifting material from a "shell 

 pocket" on the sand-hills at Abersoch, North Wales, on June loth, 1903, 1 had the 

 good fortune to find a fine example of this along with numerous specimens of the 

 typical form and its variety alba. So far as I know, this is the first recorded occur- 

 rence of a sinistral specimen of this species. The jDocket from which I obtained 

 the specimen was only two or three yards from the edge of the cliff, and was very 

 prolific in specimens — Helix acuta, H. caperata, and H. itala were there in thou- 

 sands, along with Cochlicopa lubrica, Lauria cylindracea. Vertigo pygmcea, V. sub- 

 striata, and V. antivertigo. — J. W. Baldwin {Read before the Society, Oct. 14, 



1903)- 



I Smithsonian Misc. Coll., vol. 7, art. 4, 1867 (August, 1865). 



