MOLLUSQUES DU ROUSSILEON 
Planche 5:37. 
Classe GASTROPODA (Cuvier) 
—_——_—_ 
ORDRE IL. Prosobranchiata FAMILLE : Littorinid:e 
SECTION B. Holostomata GENRES : Rissoa, Skeneia, Homalogyra 
PE — 
# 
1, 2, Rissoa semistriata Montagu 346 19, 20, Rissoa glabrata var Muhlfeld 3/2 
3, _ _ var. pura jeffreys 21, — — var. turnta B. D, D. 
MW, 5, — pulcherrima jeffreys 397 22,23, —  n:tida Brusina 314 
5, — — var. flammulata B. D. D. 2}, 25,29, — var. elougata Monts 
7, 8, — —_ var. concolor B. D. D. ‘ 27, 28, 29, Skene a planorbis O. Fabricius 322 
), —  fulgida Adams 305 A0 GI, Homalogyra atomus Philippr 32 4 
(0,11, —  micrometrica Seguenza 1/0 32, — — var. polyzona Bru ina 
£2, 13, 14, 15, 16, Contorta jeffreys +3 // 39:91, — rota Forbes et Haaley 32720 
LT, _— — var. intorta Monts 690137, _ Fischeriana Moatervsato 3524 
— var elata B. D. D. 
Bucquoy, Dautzenberg & Dollfus. 
