56 PULMONATA. 



lated ; body cylindrical, end conic, obtuse, deeply sulcated ; head 

 and tentacles short ; aperture of respiration subauterior ; foot 

 iron-grey, with a broad livid zone ; mucus white. 

 Var. 2. Brouze-green, head and tentacles darker. 



Arion tumidus, Morelet, Moll. Portugal, t. 2. f. 2. 



Hab. Portugal. 



. The tentacles show the eyes when they are only half-expanded. 



b. Sliell distinct, oval, concave, rarely wanting. 



9. Arion hortexsis. 



Black or bluish, with small grey longitudinal bands ; edge of 

 the foot orange. 



Limax subfiiscus, Pfeiffer, Syst. Anord. 20. 

 Limax fasciatus, Nilsson, Moll. Sttec. 3. 



Limax circumscriptus, Johnston, Edinb. Phil. Journ. 1828, v. T], 

 Arion hortensis, Ferussac, Tab. Syst. 18 ; Hist. Moll. ii. 65. t. 2. 

 f. 4, 6. 



Gray, Med. Rejws. 1821. 



Alder, Mag. Z. S,- B. iii. 105. 



Sti}n2)son, Shell Neiv Engl. 



Shell. — Limacella variegata, Turton, Man. ed. 1. 25. t. 3. f. 16. 

 Limacella concava, Brard, Hist. 121. 



Var. 1. Grey, uniform, with black bands. — Ferussac, t. 2. {. 6. 



A"ar. 2. Reddish grey ; edge red with black bands. 

 Limax alpicoia, Ferussac, Hist. t. 8 a. f. 2, 3,4. 



Hab. Europe ; Paris (Ferussac). N. America, Massachusetts 

 {Stimpson). i3. Alps. 



? New genus ? or monstrosity" ? 



Foiin like Arion ; back cylindrical, hinder end rounded. Foot 

 broad, not margined or sharply detined ; shield small ; aperture 

 of respiration rather anterior ; subcaudal gland terminal. " Le 

 })lan locomoteur ne lie pas auterieurement avec la tcte de I'ani- 

 mal, mais oifre une solution de coutinuite qui forme une espece 

 de sac ou elle s'engage dans la contraction." 



Shell none, only some irregular callous concretions. Back 

 brown, with two paler lateral streaks ; foot orange, like Testa- 

 cella. 

 Hab. Portugal, River Alvega {Morelet, Moll. Portugal, 50) 



