Ch. VII.] 
SICILY — CYCLOPIAS ISLES. 
79 
by one familiar with Somma and the minor cones of Ischia, for 
anything but masses thrown out by volcanic explosions. From 
the tuffs and marls of this district I collected a great variety of 
marine shells*, almost all of Avhich have been identified with 
species now inhabiting the Mediteraneam and, for the most part, 
now frequent on the coast immediately adjacent. Some few 
of these fossil shells retain part of their colour, which is the 
same as in their living analogues. 
The largest of the Cyclopian islets, or rather rocks, is distant 
two hundred yards from the land, and is only three hundred 
yards in circumference, and about two hundred feet in height. 
The summit and northern sides are formed of a mass of strati- 
fied marl (creta), the laminae of which are occasionally subdi- 
vided by thin arenaceous layers. These strata rest on a mass 
of columnar lava (see wood-cut, No. 14) f, which appears to 
have forced itself into, and to have heaved up the stratified mass, 
No. 14. 
View of the Isle of Cyclops in the Bay of Trezza. 
* See, in Appendix No. II., a list, by M. Deshayes, of sixty-five species, which 
I procured from the hills called Monte Cavalaccio, Rocca di Ferro, and Rocca di 
Bempolere (or Borgia), 
t This cut is from an original drawing by my friend Capt. W. H. Smyth, R,N. 
