On the Keroeididse, a New Family of 

 Gorgonacea, and Some Notes on the Suberogorgiidas. 



By 



Enmao Einoshita, Rigakushi. 



Zool. Inst., Tokio Imp. Univ. 



{With Plate VI.) 



I. 



Suberogorgiidae 1 Studer. 



This group was originally founded by Kölliker, on the basis of 

 genus Sclcrogorgia { = Suberogorgia Gray), as a subfamily of Gor- 

 gonidas under the name of Sclerogorgiaceœ. The diagnosis given by 

 him runs as follows : — 



" Gorgoniden mit ungegliederter Axe, die aus Hornsubstanz 

 und verschmolzenen Kalkkörpern besteht. Ccencnchym wie 

 bei Gorgonia." 



Subsequently Studer raised this subfamily to the rank of a family, 

 altering the name into Suberogorgidaj, and added to it a new genus 

 Kcrocides considered to be very closely allied to Subcrogorgia. The 

 family diagnosis Avas so drawn up as to cover both the genera. It 

 runs as follws : — 



" Eine deutlich gesonderte Axe und Hornsubstanz, welche 

 die zahlreichen dicht gelagerten Kalkkörper umgiebt. Die 

 Axe wird von Längskanälen umgeben, in whelche die netz- 

 artig verzweigten Ccenenchymkanäle, welche Polypen unter - 



I) Subfamily Sclerogoigiacece Kölliker, Iconcs Histologic.*:, 1S65, p. 142.; Suberogorgidx 

 Studer, Arch. f. Xaturgesch., Bd. 53, i,i8S7, p. 29 ; Sclerogorgid.v; Wright & Studer, Challenger 

 Rep., 1889, p. XXXVI & p. 165. 



