204 PROCEEDINGS OF THE SCIENTIFIC ASSOCIATION. 
BIBLIOGRAPHICAL NOTES. 
W. O, Crosby. Notes on the Physical Geography and 
Geology of Trinidad. (Proc. Boston Soc. Nat. Hist., 
vol. xx., October, 1878.) 
Some very valuable remarks on the Geology and Physical 
Geography of Trinidad are included in this paper, 
W. 0. Crosby. Native Bitumens and the Pitch Lake of 
Trinidad. (American Naturalist, April, 1879.) 
Robert Elwes. W. S. W., A Voyage in that direction to 
the West Indies. London, 1866. 8vo., pp. 96 — 185. 
A new spider ( Gasteracantha callida) from Trinidad is 
described by the Rev. 0. P. Cambridge in Proc. Zool. Soc., 
1879, p. 284, pi. xxvi., f. 7. 
A small round body, found somewhat abundantly in the 
tertiary rocks of Jamaica and Cumana, proves to be, as no 
doubt has been often suspected, a foraminifer, and has been 
described under the name of Tinoporus pilaris Brady, in 
an appendix to a paper by Profs. T. Rupert Jones and 
W. K. Parker on the Foraminifera, etc., of Jamaica. (Ann. 
Soc. Malacologique de Belgique, 1876.) 
