2 GEOLOGICAL MEMOIRS. 



evidently Cretaceous terrain, may show us whether it ought to be 

 united to it or not. 



On the Belenda Hill, above Mortola, and in its neighbourhood it is 

 difficult to follow the stratification on account of the irregularities of 

 the surface, the contortions of the strata, and their various foldings. 

 On the top of this hill, however, to the N.E., we can distinguish — 1. 

 The cretaceous marly limestone with Inocerami and Hamites ; 2. 

 Overlying nummulitic strata. Conformably on the latter lie, 1st, 

 strata full of fossils, identical with those of the Fontana Giarrie, 

 which are noticed by Bellardi in Prof. Sismonda's Memoir on the 

 Maritime Alps ; 2ndly, other strata with various Nummulites (as we 

 shall again find at Capo di Mortola) ; 3rdly, above these, marls and 

 sandstones ; and 4thly, macigno and limestones. 



These strata are folded back towards the S.E., and are reproduced 

 with their regular development at the Croce di Mortola, where, by a 

 local disturbance, the strata with Nummulites are covered uncon- 

 formably by the fossiliferous strata which we have above noticed. 



It is easy to see that this unconformability depends on a local dis- 

 placement, if we follow the direction of the strata from the Croce 

 di Mortola as far as Capo Omonino, where they dip into the sea near 

 the estate of Grandis. There I noticed the following parallel series 

 of strata, from below upwards : — 



ri. The bluish marly limestone with Inocerami and Hamites; 

 A.-^ without any trace of Nummulites or other fossils common 



[_ to the overlying beds. 



'2. Strata containing Nummulites from thirty to a few millimetres 

 in diameter, and gibbous on both surfaces. 



3. Strata with whitish fossils (Zoophytes predominating), ana- 

 logous to those of Fontana Giarrie, Blosasco, Pallarea, &c. 



4. Strata containing Ostrece about 20 centimetres in diameter 

 (perhaps the Ostrea latissima of Deshayes?). 



5. Strata with flat Nummulites, about 20 milhmetres, more or 

 B.< less, in diameter. 



6. Strata containing minute bodies possibly referable to Num- 

 mulina of D'Orbigny, — flat, circular, thin, and bearing a 

 central tubercle on one of their faces. 



7. Strata with small LenticuliteSj analogous to those of Beau- 

 lieu near St. Ospizio. 



8. Strata containing a mixture of flat Nummulites and of the 

 species referred to in No. 6, &c. 



Disseminated in the greater part of these strata [B.] we have the 

 Spirulea nummularia, Bronn [^Serpula spirulea, Lamk.], and other 

 fossils which we cannot here notice, but which will be treated of by 

 M. Bellardi*. 



These strata consist of a psammite, more or less brown, and vary- 

 ing in its character. 



* See " List of the fossils from the Nummulitic Rocks of Nice," by M. Bellardi, 

 Bullet. Soc. Geol. France, 2 ser. vol. vii. p. 678. — Transl. 



