Plate 25. 
Figs. 1, 2. Holoporella (?) echinata, new species, (p. 177.) 
1. The globular zoarium, natural size. 
2. Zooecia, X 20, showing two oral spines and the absence of areolar pores. 
Miocene (Yorktown formation): Yorktown ,Virginia. 
Figs. 3-6. Holoporella orbifera, new species, (p. 177.) 
3. 4. Two examples of the irregular, massive zoaria, natural size. 
5. Portion of the zoarium, X 20, with large interzooecial avicularia. The areolar pores, the 
convex frontal, and the form of the apertura are well shown. 
Pliocene (Waccamaw marl): Waccamaw River, Horry County, South Carolina. 
6. Another surface, X 20, illustrating the usual characters noted. 
Miocene (Duplin marl): Wilmington, North Carolina. 
Fig. 7. Holoporella massalis, Ulrich and Bassler, 1904. (p. 177.) 
Surface of the original type, X 20. 
Miocene (St. Mary’s formation): St. Marys River, Maryland. 
Fig. 8. Cellepora cribrosa Ulrich and Bassler, 1904. (p. 183.) 
Photograph of the type specimen, X 20. 
Miocene (Calvert formation): Reeds, Maryland. 
Fig. 9. Holoporella subturrita, new species, (p. 176.) 
The incrusting zoarium, X 20, illustrating the four prominent rostra with avicularia, about each 
apertura. 
Miocene (Duplin marl): Twenty-eight miles northwest of Wilmington, North Carolina. 
Figs. 10-13. Cellepora minuta, new species, (p. 182.) 
10-12. Two zoaria, natural size, with a third cut through the middle, showing growth upon gas¬ 
tropod shells. 
13. Surface of a zoarium, X 20, illustrating the small size of the zooecia, a single row of areolar 
pores and the occurrence of small tubular avicularia only. 
Miocene (Duplin marl): Wilmington, North Carolina. 
Figs. 14-20. Cellepora maculata Ulrich and Bassler, 1904. (p. 182.) 
14-16. Three zoaria, natural size, growing as usual upon gastropod shells. 
17. Drawing of the surface, X 17, illustrating the shape of the apertura and the two kinds of 
avicularia as well as the areolar pores. 
18. Photograph of zooecia, X 20, illustrating the large interzooecial avicularia. 
19. A section through a zoarium, X 10, showing the accumulation of the zooecia. 
20. An enlargement of the same, X 25, showing the arrangement and structure in more detail. 
Miocene (Calvert formation): Plum Point, Maryland. 
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