176 PROCEEDINGS OF THE SCIENTIFIC ASSOCIATION. 
Miocene, Anguilla. Allied to F. Peedeensis TuOmey and 
Holmes, North. America. 
Spondylus bostrychites n. sp. 
8. bifrons Sow. (non Goldfuss) Quart. Joum. Geol. Soc., 
vol. vi., p. 53. 
A species found in Haiti and Anguilla. As the name 
lifrons had been already given by Goldfuss to a species of 
the same genus it is necessary to change the name. 
Pentacrinu8 rotularis n. sp. 
No other part than the stem of either of the species here 
named has been discovered. The stem of P. rotularis is cir- 
cular in section, composed of numerous joints whose dia- 
meter is rather more than thrice their height. 
Lower Miocene, San Fernando. 
Pentacrinus obtusus n. sp. 
Stem angular, somewhat irregularly pentagonal in sec- 
tion ; joints about 1£ mill, high and about 4$ mill, in 
diameter. 
The differences between the stems to which I have as- 
signed these names and all other species of which I have 
any knowledge seem to be sufficient to warrant the creation 
of provisional specific appellations. 
Diagrams showing the distribution and relations of the 
various formations of Trinidad and South-America were 
exhibited ; and a suite of fossils from the tertiary rocks of 
the Caribean area. 
Dr. W. H. Stone exhibited some thermometers of new 
and improved construction, including a solar radiation ther- 
mometer, and explained their uses and mode of action. 
