Plate 2. 
Fig. 1. Membranipora vaughani Canu and Bassler, 1919. (p. 23.) 
The incrusting zoarium, X 20, showing the large rounded interzooecial tubercles. 
Lower Miocene (Bowden horizon): Cercado de Mao, Santo Domingo. 
Figs. 2, 3. Acanthodesia savarti forma monilifera Canu and Bassler, 1919. (p. 32.) 
The hollow cylindrical zoarium, natural size and X 20. The beaded structure of the mural rim 
is apparent . 
Lower Miocene (Bowden horizon): Cercado de Mao, Santo Domingo. 
Fig. 4. Hemiseptella lata Canu and Bassler, 1919. (p. 70.) 
Part of the incrusting type specimen, X 20, with some zooecia showing the characteristic inferior 
denticle. 
Lower Miocene (Bowden horizon): Cercado de Mao, Santo Domingo. 
Figs. 5-7. Nellia oculata Busk, 1852. (p. 55.) 
5. Normal zooecia with tubercles, complete, X 25. 
6. Fragment showing large zooecia, X 25; the tubercles are replaced by pores. 
7. View of fragment, X 25, showing two sides of the zoarium. 
Lower Miocene (Bowden horizon): Cercado de Mao, Santo Domingo. 
Figs. 8-10. Corynostylus ellipticus Canu and Bassler, 1919. (p. 84.) 
8. Several fragments of the articulated zoarium, natural size. 
9. Anterior face of zoarium, X 25, showing the characteristic unilamellar growth with two rows 
of zooecia. 
10. Posterior face, X 25. 
Lower Miocene (Bowden horizon): Cercado de Mao, Santo Domingo. 
Figs. 11-13. Corynostylus labiatus Canu and Bassler, 1919. (p. 84.) 
11. Complete segment of the articulated bilamellar zoarium, natural size. 
12. Photograph of the same, X 25. The salient opesial lip is shown. 
13. Section, X 20, exhibiting the interior of the zooecia in the middle row and a longitudinal sec¬ 
tion in the outer rows. 
Lower Miocene (Bowden horizon): Cercado de Mao, Santo Domingo. 
Fig. 14. Thalamoporella granulata Levinsen, 1909. (p. 61.) 
Small fragment, X 20, identified with this recent species. 
Lower Miocene (Bowden horizon): Rio Gurabo, Santo Domingo. 
Figs. 15-19. Cupularia umbellata Defrance, 1823. (p. 80.) 
15. The discoid zoaria, natural size. 
16. Photograph of the inner tuberose side, X 25. 
17. Ancestrular region, X 25, in which the ancestrula is covered over by a normal zooecium. 
18. Ancestrular region of another zoarium, X 25; the zooecia are arranged alternately and in invert¬ 
ed order. 
19. Another view of the ancestrular region, X 25; here the ancestrula is a membraniporoid zooe¬ 
cium. 
Lower Miocene (Bowden horizon): Cercado de Mao, Santo Domingo. 
Figs. 20, 21. Smittinal brevis Canu and Bassler, 1919. (p. 146.) 
20. Surface of the bilamellar zoarium, X 20. 
21. Ovicelled zooecia of another fragment, X 20. 
Lower Miocene (Bowden horizon): Cercado de Mao, Santo Domingo. 
Fig. 22. Rkynchozoon vaughani Canu and Bassler, 1919. (See also pi. 4, figs. 1, 2.) (p. 155.)- 
A small fragment, X 20. 
Lower Miocene (Bowden horizon): Cercado de Mao, Santo Domingo. 
Fig. 23. Callopora dumerilii Savigny-Audouin, 1826 (see also pi. 1, fig. 2; pi. 12, fig. 12.) (p. 40.) 
An example, X 20 showing thick mural rims and regenerated zooecia. 
Lower Miocene (Bowden marl): Bowden, Jamaica. 
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