Plate 1. 



Kio. 1. Florluiim pi/rlpora (.'aim luul liassler, l!)l!). (j). 56.) 



Surface of the incrusting zoarium, X 20, sliow-ini; the large i»oily (ieliiied opesiules, the pyriform 

 opesiuni and the smooth salient endozooecial oviccU. 



Oligocene (Antigua formation): Rifle Butts, Antigua, Leeward Islands. 

 Fig. 2. CiiUoporn ihimcrilii Savigny-Audouin, 1820. (See also pi. 2, fig. 23; pi. 12, lig. 12.) (p. 40.) 



Portion of the specimen, X 20, separated by Canu and Bassler in 191!) as var. lata. 



Oligocene (Anguilla formation): Soutltwest side Crocus Bay Bluff, Atiguilla, Ixeward Islands. 

 Fig. 3. Ogivalina mutahilis Canu and Bas,sler, 1919. (p. 37.) 



The incrusting type specimen, X 20, illustrating the large, irregular opesia, small endozooecial 

 ovicell, the small gymnocyst and the suppo.>ied avicularium. 



Oligocene (Emperador limestone): Near Empire, Panama Canal Zone. 

 Fig. 4. Calpens'm ivipressa Moll, 1803. (p. 83.) 



Surface of the incrusting zoarium, X 20, referred to this species. 



Oligoceue (Antigua formation i: Carlisle marl pit, Antigua, Leeward Islands. 

 Fig. 5. Floridina fusifera Canu and Bassler, 1919. (p. oli.) 



The incrusting type specimen, X 20, exhibiting the small opesium, large, rounded opesiules, 

 prominent polypidian convexity, large onychocellarium and small fusiform a\'icularia. 



Oligocene (Antigua formation i: Ride Butts, Antigua, Leeward Islands. 

 Fig. 6. Conopeum lacroirii Busk, 1852. (p. 2(j.) 



Portion of the incrusting zoarium, X 20, showing the characteristic interopesial cavities and small 

 tuberosities on the mural rim. 



Miocene (Bowden marl): Bowden, .lamaica. 

 Figs. 7-9. Ctipidailria canaricnsis Busk, 1859. (p. 28.) 



7. Two of the small, free, conical zoaria, natural size. 



8. The celluUiferous, convex surface, X 20, illustrating the membraniporoid opesium and the 

 vibracula. 



9. Concave, basal surface, X 20, showing tlie characteristic polygonal areas marked by pores. 

 Miocene (Gatun formation i: Banana River, Costa Rica. 



Fig. 10. PueUina nidiata cnrolinensis Ciabb and Horn, 1862. (p. 90.) 



Gabb and Horn's illustration of this variety. 



Eocene (Jacksonian) of South Carolina. 

 Fig. 11. Hippoporina lata Smitt, 1872. (p. 131.) 



View of several zooecia, much enlarged (after Smitt). 



Recent: Gulf of Mexico. 

 Fig. 12. Porclla bdia Busk, 1860. (p. 147.) 



Smitt's illustration of Escharellalandshorori. 



Recent: tiulf of Mexico. 

 Figs. 13-17. Cupidaria haidingtri Reuss, 1847. (p. 77.) 



13. The small discoidal zoaria, natural size. 



14. The inner side, X 20, sho\ving the tuberose, bifurcating ribs. 



15. 16. Portions of the celluliferous side, X 25, illustrating the two symnu'trical condyles and 

 the denticular processes. 



17. A zooecium, X 50, showing the structure of the spinose processes which are Hat, claviform, 

 and finely denticulated. 



Redonnian: Pigeon Blanc, France. 

 Fig. 18. Cupidaria doma D'Orbigny, 1852. (See also pi. 15, figs. 1-5.) (p. 77.) 



Zooecia, X 25, showing the two symmetrical spinules forming condyles and three irregular 

 ununited siniiules. 



-Meililerranean: Oran. Algeria. 

 Figs. 19-22. Cupuhiriii rotasidna Manzoni, 1809. (p. 78.) 



19. Several, small cujuiliform zoaria, natural size. 



20. Zooecia, X 25, showing the trifoliate opesium and that the condyles are not united to the 

 spinules. 



21. Inner side, X 20, illustrating the large tuberosities. 



22. View of zooecia, X 25, in which some of the spinules are not united together. 



Sicilian: Farnesina, Italv. 



245 



