PLAT E V I. 



Sphenotbochus, Turbinolia, Trochocyathus. 



Page. 

 Figs. 1 to 3a. Sphenolrochiis claiboniensis sp. nov 85 



Figs. 1 and ,S, x 3; lig. 2, X 3^; fig. 2a. caliee of specimen represented by fig. 2, x 5. 



Fig. 4. TiirlrinoUa sulcata Lamarck 87 



Type species of the genus ; longitudinal section to show flat surface of septa, x 5. 



Figs. 5 to 10. Turbinolia pharetra Lea 86 



Fig. 5, longitudinal section of a corallum, x 5; fig. 6, upright view of a specimen, 

 X 5 ; fig. 6a, costa^ and intercostal spaces of the same specimen, more enlarged ; 

 fig. 6b, calicular view of the same specimen, enlarged almost 12 times; fig. 7, X 5; 

 tig. 8, X 4; fig. 8.a, caliee of anotlier specimen, X 6; fig. 9, a large robust variety 

 from Texas, X 3J; lig. 10, longitudinal tangential section of a corallum, X 5; fig. 

 10a, a portion of a septum more enlarged to show the nodose character. 



Figs. 11 to 12. Turiinolia wautuhheensis sp. nov 88 



Fig. 11, natural size; fig. 11a, same view, x 3; fig. lib, calicular view, x about 3; 

 fig. 12, longitudinal section of a specimen, x 5, to show ornamentation of flat sur- 

 faces of septa. 



Figs. 13 to 13b. Turbinolia acuticostata Vauglian 89 



Fig. 13, upright view, x 4; fig. 13a, calicular view, caliee broken, x about 6; fig. 

 13b, costa' of another specimen, to show creuate character of the costal edges. 



Figs. 14 to 16b. Turbinolia claibornensis sp. nov 90 



Fig. 14, upright view of a large specimen (in United States National Museum), x 2; 

 fig. 14a, calicular view of the same, x4; fig. 15, longitudinal section of a corallum, 

 X 5, to show ornamentation of flat surface of septum; fig. 16 to 161), three views 

 of the same, specimen (from T. H. Aldrich'a collection), all X about 5. 



Figs. 17 to 18. Turbinolia iusignijica sp. nov 91 



Fig. 17, upright view of a specimen, x about 4; fig. 17a, caliee of the same, x 11; 

 fig. 18, X about 4. 



Figs. 19 to 21. Trochocnatlms hyaiti sp. nov 93 



Fig. 19, upright view, x 1|; fig. 20, part of a calicular view, enlarged to show 

 arrangement of pali and septa, the fourth cycle of sept.a is not shown between 

 the primaries ; fig. 21, upright view of a specimen, x 3^; tig. 22, section through 

 wall, shows an apparent euthcca, X 8^. 

 Figs. 6, 6b, and 21 drawn by J. Henry Blake; fig. 6a by Hunter Harris: all others by Dr. .7. C. 

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