AHT. 4 SPONGES OF CALIFORNIA de LuVUBENFELS 17 



The coronal oxeas are arranged in a palisade about the oscule, as 

 usual. The large quadriradiates or triradiates are hj^podermal. 

 Their rhabds reach clear to the gastral layer, the cladome being 

 near the outer surface. The smaller triradiates are scattered in the 

 choanosome. The still smaller quadriradiates or triradiates line the 

 gastral surface. The fourth ray, or in the case of the triradiates, 

 one of the three, is autodermal. 



Remarks, — Dendy and Row in monographing the Calcarea (1913, 

 p. 793) put this in the large genus Leucilla. The type species of that 

 genus, L. amphora., is somewhat like the species under discussion in 

 shape, and to a lesser extent in canal system and arrangement of the 

 larger spicules. Lendenfeld regarded the difference in canal system 

 great enough, however, to create a separate family for those of the 

 type of Polynia and Vosmaeria (family Sylleibidae)^ R. nuttingi 

 would be in this family if it were regarded as valid, but it is usually 

 not so regarded. Furthermore, nuttingi differs so widely from 

 amphora in other respects, especially in having the peculiar dermis 

 with its special microscleres, that I believe the two can not fairly be 

 classed as congeneric. I therefore hold with Urban, recognizing his 

 genus, Rhabdodermella. 



Order HEXACTINELLIDA Schmidt 



Family HYALONEMATIDAE Gray 



Genus HYALONEMA J. E. Gray 



HYALONEMA POPULIFERUM Schulze 



Ilyalonema popiilifcrum F. E. Schulze, 1899, p. 10. 



Holotype.—JJ.S.l!:iM. No. 7557. 



Type locality. — Albatross Station 2928, near San Clemente Island, 

 Calif., depth 764 meters, sand bottom. 



Other specimens recorded by Schulze from the vicinity of San 



Clemente Island are from : 



Albatross Station 2936, depth 656 meters, mud bottom. 

 Albatross Station 2937, depth 847 meters, mud bottom. 

 Albatross Station 2980, depth 1,192 meters, mud bottom. 



Family ROSSELLIDAE Schulze 



Genus APHORME Schulze 



APHORME HORRmA Schulze 



Aphortne horrida F. E. Schulze, 1899, p. 40. 



Holotype.—U.^.^M. No. 7504. 



Type locality. — Albatross Station 2937, near San Clemente Island, 

 Calif., depth 847 meters, mud bottom. 

 107704—32 2 



