404 On the Land Shells of Bourbon. [No. 4, 



of the foot the same. It is tolerably abundant in damp places 

 under stones &c, in ravines, at an elevation of about 1000 feet 

 above the sea. I found it alive in nearly all stages of growth ; in 

 the very young state it somewhat resembles the figure of Vitri- 

 na Borbonzca, Morlt., Series Conchil. p. 48, 1860. 



2. Helix (Dorcasia) similaius, F£r., Prod. 262 (var. Borbonica, 

 De sh., Moll, de la Beun. p. 85). 



This shell is very common everywhere throughout the Island ; there 

 are two common varieties : — var. A, very large, much more so than 

 any I found at Mauritius or the Seychelles ; var. B, smaller, with a 

 broad brown band, much more developed than in any from the other 

 localities of this widely distributed Helix. Deshayes makes a 

 species, H. Borbonica, which is nothing but this variety, only the 

 above characteristics are even more marked than usual. Animal 

 light brown, closely mottled with minute, pale yellowish spots, 

 tentacles brown. 



3. Helix ? detecta, F e r., (Nimina apud A 1 b o r s). 

 This and the following 2 species I did not find myself. 



4. Helix ? Frappieri, Desk, Moll, de la E6un. p. 86. 



5. Helix Eudeli, D e sh., ibid. p. 87 (?-Barclayi, Ben s.). 



6. Helix imperfecta, D e s h., ibid. p. 89. 



At about 2000 feet elevation, rare and local, in damp woods ; tliis 

 species is also found at Mauritius, where it is far more abundant, 

 creeping about on the ground amongst decaying vegetation ; my 

 specimens from both Islands cannot be distinguished from one 

 another. 



7. Helix setilieis, Bens., Ann. Mag. 1851, p. 252. (H. Vin- 

 soni, D esh.). 



Another species common to both Islands, found in the same 

 localities as the preceding ; it appears to be rare at both. 





