MOPESEOUES DU ROUSSIER 
De 0 — ————_—_ 
Planche 42. 
Css GASTROPODA ( Cuvier ) 
ORDRE |. Prosobranchiata FAMILLE : Turbinidæ 
SECTION B. Holostomata SOUS-FAMILLE : Trochidæ 
GENRE : Trochus 
357% 
12) 3, Trochus conulus (Linné) 444 15, 16, 18, 19, Trochus Gualtierianus (Philippi) 
4, — — var. subangulata (B.D.D.) 17, SE — * var. pallida (Monts) 
CE bre (Fhilippi) 242 20, —  miliaris (Brocchi) Marseille 357 
| 8,0, — — var. spongiarum (B. D. D.) 21, 22, & <E ° Norwège 
| 10, 11, 12,13, 14, — Laugieri (Payraudeau) 3 $3 23, 24, 25; E 4 tr Roussillon 
Bucquoy, Dautzenberg & Dollfus. 
