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APPENDIX. 



from April to the end of November, depositing SO to 70 

 eggs at each time ; two individuals having laid 348 eggs 

 in that period. The young grow very rapidly : he has seen 

 specimens lay eggs on the 66th day of their age, when they 

 did not reach their full size until the 92d day. 



M. Bouchard describes a new species under the name 

 of Limax arboreus, living generally on trees, especially 

 such as are covered with moss. He thinks the Limax 

 filans of Hoy is probably the young of this species. 

 He describes the Limax brunneus as having great affinity 

 to the dark variety of L. agrestis ; and he observes that 

 the description and figures ofLimacella concava of Brard 

 exactly agree with the shell of this species. 



The following table is formed from M. Bouchard's ob- 

 servations. The first column exhibits the time of laying, 

 No. 1. standing for January; the second, the number of 

 eggs laid at one time ; the third, the number of days 

 hatching ; the fourth, the number of months before the 

 animal arrives at its adult age. 



