ee 
WW MOLLUSQUES DU ROUSSILLON 
D € 2 — 
Planche 4:35. 
Classe GASTROPODA ( Cuvier ) 


TD — 
ORDRE LL Prosobranchiata FAMILLE : Furbinidic 
SECTION B. Holostomata SOUS-FAMILLE : Frochidæ 
2 SG; 
ES, 
6. 7, 
8,9, 10, 
11, 12, 13, 14, 15, 
16, 17, 
GENRE : EFrochus 

Trochus exasperatus (Pennant) IS, 19, Trochus Monterosatoi (B. D. D.) 
re = var, Matoni (Payr.) 21, 22, —  aequistriatus (Monts) 
a == var. tricolor (Monts) 23, 24, —  smaragdinus (Monts) 
—  striatus (Linné) Bretagne 20, 25, —  elenchoides (Monts) 
Én — — Roussillon 25, 27, 28, 20, 30 —  Gravinae (Monts) 
—  depictus —  Deshayes 
Bucquoy, Dautzenberg & Dollfus, 
