96 



JOUl^NAL OF CONCHOLOGY, VOL. 10, NO. 3, JULY, I90I. 



Fig. 3- 

 After A. dOrbigny, 

 7«Webb & Bertheloi', 

 Hist. Nat. des lies 

 Canaries, I\rolliisques, 

 1839, pi. 3, tig. 7. 



exhibited tlie same undulatory movement seen on the foot of a slug 

 crawUng on a piece of glass. 



11. d' Orbigny, A., /;/ Webb & Berthelot, Histoire Natuielle des 



lies Canaries: Mollusques, 1839, p. 48. 

 Liinax carinata, d' Orb. (Teneriffe) is figured let- 

 ting itself down from a twig (fig. 3). It is an Ainalia: 

 (young of A. gagates ?). 



12. Gray, J. E., /// Turton's Manual of the Land 

 and Fresh-water Shells of the British Islands, 



1840, p. 115. 

 A statement about the formation of a thread, 



derived from Fleming's "British Animals," 1828, 

 p. 256, and relating to Agrioliniax agrestis, is placed 

 by mistake under Liinax fiavus. 



13. Clarke, B. J., in Thompson's Catalogue of 

 the Land and Fresh-water Mollusca of Ireland, 

 Ann. 6^ Mag. Nat. Hist., vol. 6, 1841, p. 203-5. 



Clarke writes of Agr. agrestis, referring to the 

 yellowish young as Liinax filans : 



I had the gratification of seeing them repeatedly let themselves drop down to the 

 table from the lid of a tin box, where for the purpose of taking some drawings of the 

 different varieties they were held. A similar feat was performed by the fitll-grown 

 and dark varieties, which were on the same box with Liiiiax filans, but they did not 

 appear to possess the same facility, and were more reluctant in resorting to this 

 expedient for escaping from the confined space on which they were placed. 



Liniax caritiatns \=AniaJia so7uerbyi\ placed on a laurel, made use 

 of the same means of conveying itself to the ground; and any spinning 

 slug, it is added, if left on an evergreen or other uncongenial tree 

 soon escapes by a thread. 



14. Laurent & d' Orbigny. Extr. Proc. Verb. Soc. PJiilom. Paris, 



1 84 1, p. 118. 



Laurent referred, incidentally, to ^^ Liniax Jilans," and d' Orbigny 

 recalled that he had recorded spinning by Liniax cana?-iensis [=Z. 

 flavus\ He used the name, possibly, in mistake for ^'■Limax cai-inata " 



(II)- 



15. Binney, A. Descriptions of some naked air-breathing Mollusca 

 inhal.)iting the United States, Boston Jonrn. N'at. LList., vol. 4, 



1842, p. 168-71, 17.5. 



Agr. agrestis suspends itself head downwards, and lowers itself from 

 plants and fences by forming a mucous thread. It is occasionally seen 

 in this situation in rainy weather. Agr. campestris, also, suspends itself; 

 and a small Arion, in the neighbourhood of Boston, exhibits the 

 same faculty; as also does Pallifera dorsal is. 



