
ES DU ROUSSILLON 
Pipe : 22 FA - _— 
: 2: ire , a _ : 
Lrd “ è vi A ‘ 4 > 
4 _ Classà GASTROPODA (Cuvier) 

PLANCHE 25. 

- ORDRE | Prosobranchiata Famirre Cerithiad:æ 
- SecTrIoN B Holostomata GEXRE Bittium 
2 

1,2, Bittium reticulatum Da Costa. var. scabra Olivi. 14,15, 16, 17, Bittium reticulatum Da Costa 
| (Chioggia) [var paludosa B, D. D. (Etang de Berre) 
3,4,5, — — type (Arcachon) 18, 19, — — (Leucate) 
ETS — == (Paulilles) 20, 21, — var, Jadertina Brus. (Palerme) 
&, 9. — T — (Croisic) 29, 93, 24, 25, . — (Paulilles) 
LOS 12,13, — var. Latreillei, Payr. (Paulilles) 96927: — var. exigua Monts. (Gabès) 
Bucquoy, Dautzenberg & Dollfus. 

