334 PEOFESSOE P. M. DUNCAN ON THE 



fsammia, in the ' Contributions to the Fauna of the Gulf-stream at gi-eat Depths ' (2nd 

 series), p. 138. 



The very stout and thick wall, and the complete epitheca, reaching up far towards the 

 calicular margin in some and not so far in other corallites, are very distinctive. More- 

 over the bending and meeting of the smaller and larger septa is only visible low down 

 and by a section. In some of the North-Atlantic specimens the epitheca is perfect, and 

 only marked by circular ridges ; in others there are traces of longitudinal costee in the 

 form of rows of granules. Some varieties present these costal markings very distinctly. 



The origin of one corallum from another is evident in the American specimens ; but 

 it is probably an accidental circumstance. 



The following is the diagnosis of the species : — 



Corallum turbinate, rather long, conical, with a peduncle. Wall thick, very porous 

 and vermiculated. Epitheca well developed and rising to various heights, marked with 

 transverse ridges, and either perfectly plain or ornamented by longitudinal costa-like 

 markings. Calice elliptical. Fossa deep. The septa are entire, smooth, crowded, not 

 exsert, thick near the wall. There are five incomplete cycles of septa in six systems. 

 The septa of the fourth cycle bend toward each other and meet in front of the tertiary 

 septa in the deeper part of the calice. The fifth cycle is incomplete. 



The columella is papillose and porous and situated deeply. 



Common in 100 to 300 fathoms off the Florida reef. 



Variety britannica. Has the epitheca close up to the calicular margin, and it i» 

 quite plain. 



Yanety jeffrei/sia. Has the costulate ornamentation. 



The specimens of the species and the varieties were obtained during the first expe- 

 dition of the ' Porcupine,' in from 345 fathoms to 363 fathoms, and in a temperature 

 from 2 9°- 9 F. to 31°- 8 F. 



Genus Dendrophyllia, Blain\-ille. 

 DENDROPHyLLiA CORNIGEEA, Lamarck, sp. 



A very old and worn specimen was dredged up from a depth of 207 fathoms (No. 54, 

 2nd expedition), off the Mediterranean coast of Africa. 



The coral is a well-known Mediterranean form, and is also an inhabitant of the Gulf 

 of Gascony. 



It is found fossil in the Older Pliocene of Tremonte, in Sicily. 



Family Pungiidas, Dana. 



FUNGIA SYMMETRICA, Pourtales. (Plate XLIX. figs. 16-19.) 



A young specimen and some fragments of others were dredged up in 994 fathoms 

 (IS'o. 16 dredging, 2nd expedition). The description given by Count Pourtales in his 



