MOLLUSQUES DU ROUSSIPREER 
man” ri —— 
Planche 53:35. 
Classe GASTROPODA (Cuvier) 
ORDRE I. Prosobranchiata FamiLLe : Littorinidæ 
SECTION B. Holostomata GENRE : Hiissoa 
6. 
1 29, 4,0, Rissoa Montagui Payrauderu. 2 #1 
5 71 8, 9 — lineata Risso. LET 
10 LI 12; — cimex Linné. 28 3 
— var. fasciata Püil ppi. 
GT = 2 
15, 17; — — — var. varicosa B. D. D. 
16, = — — var. lactea Philippi. 
18, 19, 20, 21, 22, 23, — cancellatfa Da costa. 
Bucquoy, Dautzenberz & Dollfus,. 
