22 OCULINID^. 



cycles, the fourth developed in part of the systems only. The inner 

 edge of the septa sends out trahicules uniting together to form the 

 rudimentary columella, which is, however, frequently absent. Dis- 

 sepiments thin but complete, moderately abundant. Gemmation ex- 

 ternal, at all heights, but generally near the calicle ; abundant, one 

 specimen having as many as eleven buds ; some good-sized specimens, 

 however, show none ; as, for instance, the one figured on Plate III. 

 Height of largest specimen 4 cm., diameters of calicle 6 and 7 mm. 



West of Tortusras, in G8 fathoms. 



Off Havana, in 270 fathoms. 



Off Double-Headed Shot Key, in 315 fathoms (dead specimen). 



The generic affinities of this coral are a little doubtful. By its 

 general aspect it reminds one of Cladocora, or rather Goniocora ; but 

 according to the classification generally adopted, it is widely sepa- 

 rated from it on account of the entire border of the septa. In its 

 general features it approaches the genus Onchotrochus Duncan ; but 

 this is described as destitute of endotheca, and therefore placed 

 among the Turbinolians. 



Family OCULINIDiE Verrill. 



OcuUnacece M.-Edw. & H. 



By constituting the section of Stylasteraceae of Milne-Edwards and 

 Haime into a separate family, the Oculinidne become restricted to the 

 Oculinacea3 of these authors, and form thus a much more homogeneous 

 and natural group. 



OCULINA M.-Edw. & H. 



Oculina Lamk. (pars). 

 Oculina varicosa Lesueur. 



Oculina imrirn^a Lksueuu. 



Oculina varicoxa Dana. 



Oculina Petireri M.-Edw. & H. 



Oculina dislicha PouRT. Bull. Mus. Comp. Zobl., No. 7. 



Plate VI., figs. 3 and 4. 

 I have become convinced that the specimens described by me as 



