232 ORVILLE A. DERBY 
seems to be confirmed by an observation made by Campos about 
8 kilometers to the northward, where he found a shale with carbonized 
wood overlying the marine limestone and underlying the Tertiary( ?) 
sandstone. All things considered, I have little hesitation in identi- 
fying the shale series at Marahti (with the included marahuite) 
with the Cretaceous series at Bahia, and in including in it a large 
part, if not all, of the so-called Tertiary sandstone at the former 
place. It is to be hoped that other borings will soon be made in 
this interesting locality that will settle these doubtful points. 
The metamorphic highlands lying back of the sedimentary belt 
at Marahti extends down to the coast a few kilometers to the south 
of the town and abut on the coast for a distance of about a score of 
kilometers. To the southward the sedimentary belt again appears 
in the neighborhood of the town of Ilheos. The shales and sandstones 
composing it closely resemble, both to the north and the south of 
the town which is on a point of crystalline rocks, those about the bay 
of Bahia, and this correlation is fully confirmed by a fine collection 
of fossils made some years ago by my friend Dr. Ennes de Souza, 
which I lately had an opportunity of examining. The character- 
istic features of this collection are the fossil ganoid fishes and fragments 
of jet, both of which are very characteristic of the formation at Bahia. 
Fortunately, arrangements have about been completed for having 
this collection studied by a competent paleontologist. 
From Ilheos southward to near Victoria, in the state of Espirito 
Santo, the sedimentary belt is unbroken, except by valleys of denuda- 
tion, but no outcrops that can be definitely referred to the Cretaceous 
are known, though it will not be surprising if much of the so-called 
Tertiary sandstone of this section of the coast should eventually prove 
to be of that age. In front of the southern portion of this section, 
at a distance of about 4o miles from the mainland, lie the Abrolhos 
islands, where Hartt (4) reports fossiliferous limestone, shale and 
sandstone which he compared with the strata about Bahia. No 
recognizable fossils were found, but plant impressions and markings 
resembling scales of teleostean fishes were observed. The beds 
are somewhat inclined and are overlain by a sheet of basaltic trap. 
Specimens of this rock collected by Dr. Branner have been examined 
by Dr. J. P. Iddings, who determined it to be an olivine-gabbro- 
