Plate 13 



Figs 1, 2. Tremogasterina ventricosa, new species 47 



1. Incrusting ovicelled specimen with long zooecia; X 20. 



2. Portion of the same zoarium; X 20, in which the zooe- 



cia are broad and the pleurocyst is thick. 

 Albatross Station D. 2672, Atlantic, east of Georgia. 

 3,4. Tremogasterina granulata, new species 45 



3. Portion of a unilamellar, much calcified colony. The 



frontal pore is little apparent and hidden by the 

 pleurocyst; X 20. 



4. Interior showing the two apertural cardelles and the 



frontal pores; X 20. 

 Fowey Light, 15 miles south of Miami, Fla. 

 5-8. Tremogasterina malleolus, uQ\N species 48 



5. Unilamellar, ovicelled zoarium showing the mandible 



in place; X 20. 



6. A large avicularium replacing a zooscium. The distal 



spines are large. The mucron is much dilated at its 

 extremity. 



7. Frontal of several zooecia showing the form and the 



arrangement of the frontal pores. 



8. Portion of an unilamellar zoarium; X 20, showing the 



large distal spines. 

 Albatross Station D, 2404, Gulf of Mexico. 



9. Tremogasterina lanceolata, new species 48 



Fragments of the unilamellar zoarium; X 20. The pleu- 

 rocyst is thick. 

 Albatross Station C. 2320, north of Cuba. 

 178 



