58 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 16 



Family Faviidae 



Genus CLADOGORA Ehrenberg 



Cladocora Ehrenberg (1834), Corall. Roth. Meer., p. 309. 



Genotype; CaryophylHa caespitosa Lamarck {\^\6)=Madre- 

 pora caespitosa Linnaeus {\767 ) =Madrepora flexuosa Pallas (1766). 



Cladocora debilis Milne Edwards and Haime 

 Plate 4, figs. 22a-e 



Cladocora debilis Milne Edwards and Haime (1849), Ann. Sci. Nat., 

 ser. 3, vol. 11, p. 308; Vaughan (1902), Bull. U.S. Fish. Comm. 

 (for 1900), vol. 20, p. 298. 

 Cladocora debilis M.-Edw. & H., Pourtales (1871), Mem. Mus. Comp. 

 Zool., vol. 2, no. 4, p. 30; (1879), Bull. Mus. Comp. Zool., vol. 

 5, no. 9, p. 205. 



The specimens at hand have the same growth form and average size 

 as the specimens of C. arbuscula (Le Sueur) figured by Pourtales 

 (1880, pi. 3, fig. 1) ; however, examination of the calice shows that the 

 paliform lobes are much more prominent than those figured by him 

 (1880, pi. 3, fig. 5). According to Vaughan (1902, p. 298), the calices 

 of C. debilis are shallower and have much better developed pali than 

 typical C. arbuscula. According to that criterion, the present material is 

 better referred to C. debilis than to C. arbuscula. If Pourtales' sug- 

 gestion (1871, p. 30), that C. debilis is merely a deeper water variety of 

 C. arbuscula were to be verified by further investigation, then Le Sueur's 

 name has priority. Lacking comparative material from the Atlantic, we 

 are unable to find any characters by which the Pacific Coast material 

 may be separated. The specimens are comparable to C. arbuscula as 

 denoted by von Marenzeller (1904) but his material has not been ex- 

 amined by these authors. 



Hypotypes: Cat. nos. 22.1 (Sta. 143-34), 22.2 (Sta. 201-34). 



Material examined: Stas. 143-34 (27), 201-34 (1), 780-38 (1). 

 Cat. nos. 22.1-22.3. 



Distribution: The Galapagos Islands; Cocos Island. Bathymetric 

 range, 25-150 fms. 



