APPENDIX. 127 



1. Testacella Haliotoidea, pi. XXVI, f. 1. 



Testacellus Haliotoides, Ferussac, Hist. Moll., pi. 8, f. 5 ; 

 Testacella Haliotoidea, Drapernaud, pi. 8, f. 44, 45 ; Thomp- 

 son, Ann. and Mag. Zool. and Bot., VI, p. 19; lb., Mag. Nat. 

 Hist., VII, p. 226, f. 39 ; Brown, Illust. Conch., p. 131, pi. 59, 

 f. 17. 



Animal with cylindrical tentacles ; grey, yellowish, or pale 

 reddish; spotted on the sides beneath in some specimens; body 

 elongate, tapering from the shield to the head. 



Found in a garden, at Lambeth, by Mr. Sowerby. 



Genus IV — LIMAX Ferussac. 



Animal with an elongated, lanceolate, granular body, cari- 

 nated behind ; mantle shield-shaped, ovate, concentrically 

 lineated, entirely enveloping the shell ; end of the tail taper- 

 ing, and destitute of a gland ; pulmonary cavity situated in 

 front of the body, respiratory orifice towards the hinder part 

 of its edge, or behind the middle ; infraoesophageal ganglion 

 provided with two fissures below, presenting on each side of 

 the medial line three gangliform prominences. 



The following is the arrangement of the Rev. B. J. Clarke. 



Section I. — Mantle produced behind, concentricallij striate ; 

 tail partiallij carinated. 



1. LiMAX Maximus, pi. XXVI, f. 10, 11. 



Lima.v Ma.vimus, Thompson, Ann. and Mag. Nat. Hist., VI, 

 p. 18; Clarke, lb., XII, p. 333, pi. 10, f. 1, 2; Brown, Illust. 

 Conch., p. 131, pi. 58, f . 3 ; Limax maculatus, Miiller, p. 8 ; 

 Drapernaud, p. 124, pi. 7, f. 10. 



Animal ash-coloured, spotted, or immaculate ; tentacles 

 venous-coloured ; keel long, white, and acute ; mantle with its 

 hinder extremity produced, shield-shaped ; skin with small, 

 linear rugosities, converging towards the caudal extremity. 



Variety 1. Drapernaud; pi. XXVI, f. 10. Shield spotted; 

 back tvitli black, longiticdinal, broad lineations. 



Variety 2, pi. XXVI, f. 11. Ash-coloured and black. 



Cinereo-niger, Nilsson, p. 7- 



2. Limax arboreus, pi. XXVI, f. 2, 3, 4, 5, 6, 7. 

 Limax arboreus ? M. Bouchard Chantreux, Cat. des Moll. 



