NO. 2 HARTMAN, BARNARD: BENTHIC FAUNA OF DEEP BASINS 107 



typical. The dorsal cirrophore extends distally beyond the distal ends of 

 neuropodial lobes. Simple and composite setae are like those in shallow 

 water representatives. The species is more widely known from California 

 in shelf to slope ocean depths. 



Family ORBINIIDAE 



Five species in as many genera are represented ; they are identifiable 

 according to the following key. 



Key to species 



1. Anterior margin of prostomium truncate . Naineris ancinata 



1 . Anterior margin of prostomium more or less acutely pointed 2 



2. Thoracic neuropodia with only slender, pointed setae 

 Haploscoloplos elongatus 



2. Thoracic neuropodia with pointed setae and modified hooks 3 



3. First 3 neuropodia with modified brushlike setae 

 Califia calida 



3. First 3 neuropodia without modified setae .... 4 



4. Posterior thoracic neuropodia with thick, brown, hastate spines 

 Phylo nudus 



4. Posterior thoracic neuropodia without thick spines 



Scoloplos acmeceps profundus 



Genus NAINERIS Blainville, 1828 

 Naineris uncinata Hartman, 1957 

 Hartman, 1957, pp. 301-302, pi. 38, figs. 1-8. 



Three individuals come from San Pedro Basin in 440 fms. The 

 species is more completely known from southwestern Oregon in shallow 

 bottoms of hard-packed sand with eel grass, and Alaska, shore, to southern 

 California in depths to 340 fms. Its presence in deeper bottoms at the 

 southern limits of its range may be correlated with requirements of lower 

 temperatures, like those of littoral depths at the northern end of its 

 known range. 



Genus HAPLOSCOLOPLOS Monro, 1933 

 Haploscoloplos elongatus (Johnson) 1901 



Scoloplos elongate Johnson, 1901, pp. 412-413, pi. 10, figs. 105-1 10. 



Berkeley and Berkeley, 1952, pp. 97-98, fig. 200. 



Hartman, 1957, pp. 273-275, pi. 26, figs. 1-11. 



