CHAP, v.] 



GENERAL CONCLUSIONS. 



295 



moil, and Deltocyathus Agassizii, and one or two species of the 

 genus Ceratotrochus, were frequently met with near the Amer- 



FiG. 60. — Flabellum apertum, Moseley. Natural size. 



ican coast and in the Gulf-stream region. Besides Flahellum 

 alabastrum — the line sj)ecies already described from the Azores 

 — Flabellum apertum (Fig. 60), a form with a wide geograph- 

 ical range, occurred off the coast 

 of Portugal ; and a very delicate lit- 

 tle species, named by Mr, Moseley 

 Flahellum angulare (Fig. 61), was 

 dredged on one occasion only, not 

 far from the fishing-banks of IS^ova 

 Scotia, at a depth of 1250 fathoms. 

 The special peculiarity of this spe- 

 cies, if the individual which we pro- 

 cured be not abnormal, is its regu- 

 larly pentagonal form and the per- 

 fect quinary arrangement of its 

 parts ; it has exactly 40 septa — 10 

 primary and secondary, 10 tertiary, 

 and 20 quaternary. Species of Lo- 

 phohelia and oi Am^jpTiihelia were Fiq. ei.— Fto6ezzM«i aH(7?(«are, moselky. 



Natural size. 



generally distributed at comparative- 

 ly moderate depths, and the cosmopolitan Fungia symmetrica 

 occurred in small number at all depths. The deep-sea corals 



