— 424 



4° Formation du Gault. 



iVmnionites Bciidanti, Broiig. — Aïn-Zairin. 



— latidorsatus, Michel. — Id. 



Ancyloceras furcaius j cfOrb. — Aïn-Zairin, Oued- 



Clieniour. 

 Bouchardiajius, d'Orb. — Aïn-Zairin. 

 rotiindiis, Sow, — Oiied-Cheniour. 

 EmcriciamiSj d Orh. — Oued-Cheniour, 



Aïn-Zairin. 



Puzosianiis, d'Orb. — Id. 



Massinissa^ Coquand. — Oued-Gheniour. 

 annulatus, d'Orb. — Id. 



o^'ata, Mantell. — Id. 



Hamites 

 Turrilites 



HeHcoceras 

 Nucula 



Ammonites 



Turrilites 



Nerinca 



Avcllana 



Fusus 



Pyrula 



Vol u ta 



Pltrodonla 



INatica 



5° Formation de la craie cidoritèe. 



varians j Sow. — Djebel-Abiod , Aïn- 

 Zairin, Tenilouka, Chepka. 



Fourncli , Bayle. — Mezâb-el-Messaï , 



Tebessa. 



lîhotomagciisis, Brougn. — Djebel-Auress. 



cosialus, Lamark. ■ — Chepka, Djebel- 

 Abiod, Aïn-Zairin, Tenilouka. 



pustulifcra, Bayle. — Mezâb-el-Messaï. 

 rassis, d'Orb. — Oued-el-Nahar. 

 affinis, Bavle. — El-Outaïa. 

 cretacea, Bayle. — Id. 

 Guera?igen\ d'Orh. — Id. 

 inflala, d Orb. — Mezâb-el-Messaï. 

 don gâta, dOrh. — Id. 



Fournelij Bayle. — Id. 



