Libnaa: So^werhyi of Ferussac. 697 



and habits which Mr. Jenyns's figure and lucid description 

 communicate : see vol. iv. p. 538., where the following syno- 

 nymes seem addible to Philodromus i^imacum. ^'carus lA- 

 niacum of Linnaeus's Systema Naturce^ by Gmelin, who (torn. i. 

 pars V. p. 29S3., species 73.), under it, says nothing more than 

 this : " Schranck, Beytr. 2. Naturg.^ p. 13. Insect. Aust,, p. 521. 

 No. 1076. Reaum. Act. Paris. 1710. Habitat in Helice poma- 

 tia." Turton,also, vol.iii. p. 708., seems to render the reference 

 to Schranck of account, by giving this alone, and omits that to 

 Reaumur: his entire account is, " Acarus Limacum found on 

 the Helix pomatia, or snail. Schranck, Ins. Aust,, p. 52 1 . n. 1 076." 

 Mr. Sowerby also referred me to the following mention of 

 this mite by Ferussac: — "Les grosses especes des genres arions 

 et limas, particulierement a Paris et aux environs, le varie- 

 gatus de Draparnaud, qui se tient dans les caves, sont souvent 

 infestes de ce petit acarus que I'on observe sur le collier de 

 lima9ons, et dont Reaumur a donne la description et la figure 

 dans les Memoires deVAcademie des Sciences pour I'annee 1710. 

 C'est 1' Acarus Limacum de Linne. Nous en reparlerons en 

 traitant des lima^ons." [Histoirei p. 42.) " The large species 

 of the genera Arion and Limax (particularly in Paris and its 

 environs, the L. variegatus of Draparnaud, which confines 

 itself to vaults) are often infested with that small acarus which 

 may be observed on the collar of snails, and of which Reaumur 

 has given a figure and description in the Memoires de PAca-* 

 demie des Sciences for the year 1710. It is the ^^carus Lima.- 

 cum of Linnaeus. We shall speak of it again in treating of 

 snails." This second mention, however, we did not happen 

 to find. 



Helix rufescens (Jeffreys in Linn. Trans, vol. xvi. p. 337.) at Bury St. 

 Edmunds. — At p. 490. I have stated that the common garden snail. Helix 

 aspersa Milll., is, in the old botanic garden at Bury St. Edmunds, in hard 

 winters, numerously destroyed by the common land rat, and have added, 

 " and probably H. hispida of Jeffreys in Lin7i. Traits., also, as a species 

 answering to the characteristics of this abounds." Since this remark was 

 published, I have visited the place and inspected specimens, and find the 

 small species so abounding there to be H. rufescens. H. hispida (or at 

 least a hispid-shelled species) does also^ occur at Bury St. Edmunds, but 

 I believe only sparingly : the few specimens I found were among nettles 

 that grew about some of the ruins of the once famous abbey. H. hispida 

 (at least a species with a hispid shell) seems more plentiful about Bays- 

 water. Of both H. rufescens and H. hispida figures are given in this 

 Magazine : H. rufescens. Vol. I. p. 427, 428. fig. 184. y; H. hispida. Vol. L 

 p. 427, 428. fig, 184. a a. — J. D. 



