PLATE X. 



PocUlopom cfttpitdxii Dana, typical. 



Page. 



Fig. 1. General view of a corallum, /^ nat. size. , Specimen No. 722, TJ.S.N.M., one of Dana's 

 original specimens; fig. la, calices of same specimen, X abont 10. Note the lack of 



well-developed septa 86 



2. General view of another corallnm, nat. size. Specimen No. 186, U.S.N.M.;fig. 2(i, calices 

 of tlie same, X about 10. Septa olis^-ure but more developed than in the specimen rep- 

 resented V)y fig. 1 86 



242 



