292 Royal Society ;— 



Diplohelice, and the smaller specimens of Lopliohclke, leads to tlio 

 belief that AmjjliiheUa is identical gcnerically with jDi/j?o/zr7/a, and 

 very closely allied to Lopliohelia. Indeed the distinction between 

 the LophoheUce and Amphilielke is of the slightest kind. 



The species of the genus Amjohihelia dredged up in the * Porcu- 

 pine' Expedition are live: — 



1. Amphihelia (Diplohelia) profunda, Pourtales, sp. 



2. oculata, Linnceus, sp. 



3. mioccnica, >Ser/uenza. 



4. atlantica, nobis. 



5. ornata, nobis. 



The species came from No. 54 dredging, and from the cold area to 

 the north-west in from 500 to GOO fathoms. 



The specimens are exceedingly beautiful, strong, and perfect ; and 

 there was much difficulty experienced in removing the polypes from 

 the cahces. 



1. Amjohihelia profunda, Pourtales, sp., has been noticed. It is 

 a West-Indian form closely allied to a Sicilian mioccne species. 



2. Amphihelia oculata, Linnaeus, sp., is well known in the Medi- 

 terranean, and has not hitherto been found in the Atlantic. 



3. Amjohihelia miocenica, 8cguenza, is a very common species in 

 the deep sea, but is rare in the miocene deposits of Sicily. Its fully 

 develoi)ed costal structures distinguish it from the other .urms. 



4. Amj}hihelia atlantica, nobis, is a new species, large, bushy, and 

 with almost plain coenenchyma, which is verj' abundant. 



5. Amjyhihelia ornata, nobis, is a new species closely allied to the 

 miocene form, but its ornamentation is most peculiar, and not con- 

 tinuously costulate. 



Allojjora oculina, Ehrenberg. — Several specimens of this very rare 

 coral were dredged up in No. 54, and one in the 'Lightning' Expe- 

 dition, not far from the same spot. 



The type is in the Berlin Museum ; the locality whence it came 

 is unknown. 



The distinction between these massive and densely hard corals 

 (whose calicos are principally on one side of the coenenchyma of the 

 stem) and the Stjjlasters is very evident. 



M. de Pourtales has described a pretty red-coloured Allojoora 

 miniata dredged in 100 to 324 fathoms off the Elorida reef; but it 

 is very distinct from the species discovered in the late decjj-sea 

 dredging expeditions. 



Allopora has no fossil representatives. 



Balanophyllia (Thecopsammia) socialis, Pourtales. — Six specimens 

 of a simple perforate coral were dredged up in lat. 59° 5G' N., long. 

 go 27' w., 363 fathoms, temperature 31°-S (No. 54), and one in lat. 

 61° 10' N., long. 2° 21' W., 345 fathoms, temp. 29°-9 (No. 05). 



The six specimens are of diflcrent sizes and ages ; and although 

 they present considerable variation in shape and septal development, 

 they evidently belong to one type. The solitary coral from No. G5 

 is larger than the others, but it belongs to the same species. 



