MÉMOIRES, 



il 



BRUXELL1EN. 



LAEKENIEN. 



1* zone. 



2* zone. 1* zone. 



Ostrea gryphiua, Desh 



— dorsata ? Desh. . . . 



— proftmda ? Desh. Var. subarcuata, 



Desh 



Vulsella deperdita, Lm 



— — Variété anomala ? Desh. 



— — — minima ? Desh. 



— — — unguiformis,Nyst 



— — — Woodiana? Nyst. 

 Anomia sublamgata, d'Orb 



Braehfopodes. 



Terebratulina Puloni ? Baud. (1) 



Terebratula bisinuata, Lm 



— Kickxi, Nyst 



Crania (Pileopsis) variabilis, Gai 



Bryozoaires. 



Lunulites radiata, Lm 



Cellepora petiolus,Dixon 



Idmonea coronopus, Defr 



— hypolilhus, Defr 



Tubulipora stclliformis, Mich 



— grignonensis, Mich 



Pyripora (Flustra) conlexta, Goldf 



Eschara damspcornis ? Defr. ........ 



— excavata ? Mich 



R 



(J 



C 



ce 



R 



C 



c 



G 



Annélides. 



Serpula tricarinata, Gai . C 



Ditrupa strangulala, Desh . C 



Echinodernies. 



Crenasler (Asterias) poritoïdes, Desm. ... . CG 



Spatangus Omaliusi, Gai. . CC C 



Echinolampas Galeottianus, Forbes . R 



Echinocyamus(Echinoneus)propinquus,GaI 

 Scutellina (Nucleolites) rotunda, Gai. . . 



— — species ?..... 



— — species ? 



Lenita (Nucleoliies) patelloïdea, Gai. . . 



Cyphosoma tertiarum ? Lehon 



Cidaris? species? (piquants) . C 



Anthozoalres. 



Turbinolia sulcata, Lm 



— elliptica, Brong 



Foramiuifèrcs. 



Nummulites scabra, Lm . C 



— la?vigata, Lm . CC 



— variolaria, Lm . C 



Orbitolites complanata, Lm 



Operculina Orbignyi, Gai , . . 



(1) Découverte due à notre honoré collègue, M, Colbeau. 



2* zone. 



CC 

 RR 



R 

 CC 

 C 

 C 



C 

 C 



CC 



N 



RR 

 C 

 C 



RR 



RR 



CC 



CC 



R 



R 



C 



C 



C 



C 

 CC 



CC 



C 



CC 



C 



CC 



CC 



CC 



C 



RR 



CC 



R 

 RR 



C 

 C 



CC 



c 



RR 



