38 FLABELLUM BRAZILIENSE. 



PARACYATHUS M.-Edw. & II. 

 Paracyathus De Pilippii Duoh. & Mjoh. 



tus POURT. 



The Paracyathus described by Duchassaing and Michelotti under the above 

 name is undoubtedly a young one not fully developed, as the figure certainly 

 shows. Having frequently found specimens answering as nearly to their 

 figure and description as a comparison is possible, associated with the larger 

 ones to which I have given the name of confertus, I suspect them to be one 

 and the same. 



The characters are very variable, the type figured in my "Deep-Sea Corals," 

 Plate VI., Figs. 11, 12, 13, passing into another with deeply sunk columella, 

 the papilla; of which are partly twisted like those of a Caryophyllia or Tro- 

 chocyathus, well-defined pali rising much higher, more exsert septa, and a 

 more regular shape. This latter type is the most common at Barbados, the 

 other in Florida. The great variability of these forms inclines me to believe 

 that P. Agassmi Dune, can scarcely be separated specifically from the West 

 Indian form. 



DESMOPHYLLUM Ehrbg. 



Desmophyllurn Cailleti Duch. & Mich. 



This species appears to be common off Barbados in 100 fathoms. I have 

 become convinced, by the examination of a series of specimens of different 

 ages, thai the coral described by me under the name of GcUaxea eburnea till. 

 Cat Mus. Comp. ZooL, No. IV.) is only a young Desmophyllurn, but of a Bpe- 

 cies with thicker septa than D. Cailleti 



FLABELLUM Lhjson. 

 Flabollurn brazilionso 



/'/. VI. Jiijs. 



Corallum pedicellate, conical (greatest angle about 65°), compressed with 



rounded angles; costoe prominent ; fossa deep; calicle long, elliptical, diame- 



L0to21; septa not exsert ; five cycles, primaries, secondaries, and ter- 



tiaries nearlj equal A rudimentary lamellar columella Height L6 mm.. 



