NO. 2 HARTMAN, BARNARD: BENTHIC FAUNA OF DEEP BASINS 105 



Lumbrineris spp. 

 Small fragmented or juvenile individuals come from San Nicolas and 

 Tanner Basins and from the Patton escarpment. They may be represen- 

 tatives of named species. The genus is represented in southern California 

 by no fewer than 14 species (Hartman, 1944, p. 139); these can be 

 ecologically ranged according to depth and kinds of sediments, from 

 intertidal levels to abyssal depths, and from fine silts to coarse and rocky 

 bottoms. The species are believed to be conditioned not only to these 

 physical factors, but to other species with which they are associated. 

 (Analyses by sample number may be consulted in another part of this 

 volume.) 



Genus NINOE Kinberg, 1865 



Ninoe gemmea Moore, 1911, var. 

 Moore, 1911, pp. 283-285, pi. 19, figs. 101-109. 



Nearly 50 individuals come from Santa Catalina, Santa Cruz, San 

 Nicolas, Tanner, East Cortes and Long Basins, with the first the best 

 represented. The species is best known from shelf and slope bottoms 

 (unpublished). The basin samples differ from typical ones in that 

 branchiae are present from the second, instead of a later segment, and 

 they have up to 6 filaments, all exceeded in size by the accompanying 

 dorsal cirrus, which is somewhat foliose. Branchiae are continued through 

 16 or 17 segments and are abruptly absent thereafter. The prostomium 

 is bluntly conical, longer than wide, or more than twice as long as wide ; 

 it lacks eyes. The first 2 segments are short, smooth rings. Hooded hooks, 

 accompanied by pointed setae, are present from the first parapodium; 

 they are dusky to black along most of their length except for the tip. 

 which is pale. Acicula are black. 



Ninoe gemmea differs from N. fusca Moore (1911, p. 285), de- 

 scribed from abyssal depths off southern California, chiefly in that the 

 latter has only unifilar branchiae and hooded hooks are not present before 

 segment 48. N. gemmea is more typically a shallower water species ; it 

 has been frequently collected from shelf and slope depths (unpublished 

 data). 



