ur • 
bowdenensi 
- 18 - 
an d delicately dentate. On the sides of the septa are numerous 
granulat ions ; synapticula are quite abundant. There are no 
pronounced pall, but the dentations around the columella may be 
somewhat larger than the others. 
Columella tangle distinct, variable in size. 
Locality : Bowden, Jamaica, R. T. Hill, Collector. 
Geologic horizon ; Oligocene, Bowden horizon. 
Type : Museum of Comparative Zoology; fragment in United 
States national Museum* 
Remarks : This species is most closely related to G. 
calhounensis (p. , infra) , from which it is distinguished by 
having thicker septa and smaller calices 
