512 BULLETIN 103, UNITED STATES NATIONAL MUSEUM. 



Plate 89. 



Figs. 1, la. OrbiceUa cavernosa var. endothecata (Duncan); two views of one of 



Duncan's original specimens. Page. 



1. Outersurface; la, longitudinal section of corallites, each natural size. 384 



2. OrbiceUa cavernosa var. cylindrica (Duncan); calices, natural size, of one 



of Duncan's original specimens 385 



3. Orhieella aperta (Verrill). Calices natural size 386 



Plate 90. 



OrbiceUa bainbridgensis, new species. 



Four views of the type. 



Figs. 1. Upper surface of the corallum, natural size 386 



la. Calices, X4 386 



16. Longitudinal section of a corallite, X4 386 



Ic. Exotheca, X4 386 



Plate 91. 



Figs. 1, la. OrbiceUa costata (Duncan). Cross-section of corallites of one of 

 Duncan's original specimen. Figure 1, natural size; figure la, * 

 X3 388 



2. OrbiceUa costata (Duncan). View natural size of a specimen from 



Antigua 388 



3. 3a. OrbiceUa costata (Duncan). Two views, each natural size of another 



specimen from Antigua 388 



4. Goniastrea canalis, new species. Calices of the type, y,Z\ 416 



Plate 92. 

 OrbiceUa costata (Duncan). 



Fig. 1. Specimen from 4 miles west of Lares, Porto Rico, natural size 388 



2. Specimen from Culebra formation, Las Cascadas, Canal Zone; calices, 



X4 388 



S.^Specimen from Anguilla, natural size 388 



Plate 93. 



OrbiceUa costata (Duncan). 



Two views of the same specimen from Anguilla. 



Fig. 1. Calices, X4 388 



la. Corallum, natural size ". 388 



Plate 94. 

 OrbiceUa canalis, new species. 



,FiG8. 1, la. Two views of the type. 



1. Corallum, natural size 389 



la. Calices, X4 389 



2, 2a. Two views of a paratype from the Canal Zone. 



2. Corallum, natural size 389 



2a. Calices, X4 - - 389 



3, 3a. Two views of a varietal form from Anguilla. 



3. Corallum, natural size 389 



3a. Calices, X4 389 



