MOLECU-OME DU ROUSSILEON 
RL — —_—_—_—_—___—_—__ 

Planche 42. 
Classe GASTROPODA ( Cuvier) 

ORDRE LL Prosobranchiata FAMILLE : Turbinidæ 
SECTION PB. Holostomata Sous-FaMILLE : Trochidæ 
GENRE : Trochus 

L2:3, Trochus conulus (Linné) 15, 16, 18, 19, Trochus Gualtierianus (Philippi) 
4, = — var. subangulata (B.D_D.) 17, —= _ var. pallida (Monts) 
5% 6, 7, —  dubius (Philippi) 20, — miliaris (Brocchi) Marseille 
8, 9, _ — Var. Spongiarum (B. D. D.) 21, 22, = — — Norwège 
10, 11, 12, 13,14, — Laugieri (Payraudeau) 23, 24, 25, — — — Roussillon 
Bucquoy, Dautzenberg & Dollfus. 
