Guppy Reprint 



55 



Page 176 



Miocene, Angtiilla. Allied to P. peedeensis Tuomey and 

 Holmes, North America. 



Spondylus bostrychites n. sp. 



S. bifrons Sow. (non Goldfuss) Quart. Journ. Geol. Soc, 

 vol. vi., p. 53. 



A species found in Haiti and Anguilla. As the name 

 bifrons had been already given by Goldfuss to a species of 

 the same genus it is necessary to change the name. 



Pentacrinus 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. 



