142 
Bulletin 35 
290 
PAPER No. 19. 
PRELIMINARY NOTICE OF A DISCOVERY OF FOS- 
SILS IN THE TAM AN A DISTRICT, TRINIDAD. 
Dept, of Agr., Trinidad ; Bull. Agr. Inform., Jan. -Apr. , 
1909, pp. 55-56 with plate. 
5S 
Mr. P. \y. Jarvi.s, of the Colonial Bank, has been kind 
enough to furnish me with some samples of fos.siliferous rock 
from Machipur near Montserrat in the Tamana district. The.se 
samples are an indication of the richne.ss of that locality in fossils, 
and no doubt many remarkable and interesting deposits will be 
found in the di.strict. The pre.sent collection contains corals .so 
highly altered by fossilization as to be scarcel}’ determinable. 
The}' are like some of those described b}- P. M. Duncan from 
West Indian localities, and better specimens may hereafter be 
found admitting of specific determination. Most of the .specimens 
are a coral lime.stone, and in the interstices of this is found a cal- 
careous sandy deposit containing numerous foraminifera polyzoa 
and echinoderm remains, none of which are in a state for identi- 
I'lcation except for one foraminifer, namely At 7 iphistegina, and 
this occurs abundantly, but of small size. The most interesting 
fossil is a crab, of which I append a de.scription. Among mol- 
iuska there is an olive and a concentricalh'-ribbed bivalve which 
might be a Venus, but the hinge and interior are not visible. A 
small imperfect bivalve seems to be a Limea. 
Ranina aispidaia. — New Species. 
The Carapace is rather evenly convex and the general con- 
tour is almost circular, antero-lateral angles being formed by four 
flattened acute spines pointing outwards beyond the general out- 
line of the Carapace. These spinose projections are somewhat 
similar to the foliaceous expansions of R. palmacea from which 
the}' differ in pointing outwards in.stead of forwards. The med- 
ian portion of the Carapace is formed by a round carina which is 
separated off by moderately deep grooves from the lateral por- 
