338 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [May 19, 



from the toll-gate (where the road goes off to Foret), the remains of 

 a Nautilus (probably N. Burtini), with a cast of a large Crassatellay 

 a Tellina, and several of the shells mentioned in the former lists, 

 occur, with Nummulites Icevigatus. 



(4.) Ixelles. South-east suburb of Brussels (Map, fig. 3, PL XVII., 

 and Section, fig. 8). 



In a quarry at Ixelles, the same Nummulite-bed has afforded the 

 following species : — 



Nummulites laevigatus, Lamk. Bulla. 



scaber, LamJc. Nautilus, mandibles of. 



Cardita planicostata, Lamk. Asterias (Goniaster poritoides?, Desm.). 



Pecteu plebeius, Lamk. Lamna. 



, another species. Otodus. 



Ostrea cariosa, Besh. Galeocerdo. 



flabellula, Lamk. Myliobates. 



Terebratula Kickxii, Gal. Pristis Lathami, Gal. 



Rostellaria ampla, Brander. Coelorhynchus rectus ?, Ag. 



(5.) Etterbeek, two miles east of Brussels (Map, fig. 3, PL XVII.). 



In a road-side quarry which I visited with Captain Le Hon, between 

 Etterbeek and Woluwe- St. -Pierre, at the point G, Map, fig. 3, 

 PL XVII., we observed the Nummulites Icevigatus not forming a 

 distinct bed, as usual, but disseminated through sands which con- 

 tained the following fossils : — 



Nummulites laevigatus, Lamk. Ostrea cariosa, Besh. 



scaber, Lamk. virgata, Goldf. 



Orbitolites complanatus, Lamk. flabellula, Lamk. 



Mustra contexta ?, Mich. cymbula, Lamk. 



Bryozoon, small and branched. , sp. nov- 



Serpula, allied to S. triquetra. Terebratula Kickxii, Gal. 



, two other species. Crania Hoeninghausii, Michelotti. 



Grastrochaena. Dentalium (Ditrupa) Deshayesianum, 



Pecten plebeius ?, Lamk. Gal. 



Spondylus. Asterias ( Goniaster poritoides?, Besm.). 



Anomia laevigata. Sow. Echinolampas affinis ?, Goldf., sp. 



Ostrea inflata, Besh. Spatangus Omalii, Gal. 



gryphina, Besh. Coelorhynchus rectus, Ag. 



(6.) Dieghemy seven miles north-east of Brussels. 



It will be seen by reference to Section, fig. 8, p. 336, that the city 

 of Brussels stands, for the most part, on the beds which are next 

 below that containing Nummulites Icevigatus ; but in following the 

 line of section (I, K, Map, fig. 3, PL XVII. and fig. 8) to Dieghem, 

 seven miles north-east of Brussels, this bed is exposed to view in the 

 quarries there with the usual fossils, although its thickness does not 

 exceed 2 feet. It is for the most part covered immediately with white 

 calcareous sand, belonging to the beds E, which, like the Nummulite- 

 bed, have been much denuded. Over both are newer yellow sands 

 and pebbly beds, the age of which I could not determine for want of 

 organic remains. The manner in which the nummulitic bed, and the 



