NO. 2 HARTMAN, BARNARD: BENTH1C FAUNA OF DEEP BASINS 89 



subspherical palpi directed forward. Paired antennae are inserted on 

 the posterior third of the length ; they are very short equitriangular and 

 somewhat larger than the anterior palpostyles. The first 5 or 6 parapodia 

 are uniramous ; all others are biramous. The first visible segment is 

 the first setigerous. 



Large, sharply recurved yellow notopodial hooks are first present 

 from the fourth, fifth, sixth or seventh segment; they occur singly in 

 parapodia and are continued posteriorly perhaps to the end of the body ; 

 they are recurved upward and medially. The distal part is roughened 

 (Plate 7, fig. 5). A similar but smaller hook is usually present, deeply 

 embedded in notopodial tissue. Neuropodial setae are of 2 kinds, in- 

 cluding slender capillary, and thicker, acicular setae, the latter distally 

 bifid with the end of the main fang recurved and the accessory tooth 

 the smaller ( Plate 7, fig. 6) . 



Notopodial lobes are short, rounded, have a dorsal cirrus above the 

 emergence of the notopodial hooks. Neuropodia are larger, distally 

 rounded and supported by an acicular, embedded rod. A short, triangular 

 ventral cirrus emerges from the inferior end of the parapodium. Dorsal 

 and ventral cirri are slightly papillated or nearly smooth (Plate 7, fig. 4). 



Pilar gis hamatus differs from other species of the genus (see Hart- 

 man, 1947, p. 491, for key to species) in which dorsal cirrophores are 

 short in that the large recurved spines are present far forward. 



A posteriorly regenerated specimen from Tanner Basin (Sta. 6345) 

 differs from the type in that the surface epithelium is papillated, re- 

 sembling a species of Sphaerosyllis (family Syllidae). However, large 

 notopodial hooks are present from the sixth segment and the body is 

 unusually depressed ; it is questionably referred to P. hamatus. 



This species is more abundant in deep water than in shallower bot- 

 toms; its greatest concentrations seem to be in the inner and middle 

 series of basins. 



Genus LOANDALIA Monro, 1936 



Loandalia fauveli Berkeley and Berkeley, 1941 

 Berkeley and Berkeley, 1941, pp. 30-31, figs. 4-6. 



First described from Newport Bay, California, in inter-tidal mud 

 flats, this species has been taken (unpublished records) more abundantly 

 on shelf and slope areas of southern California. The deepest record is 

 Santa Catalina Basin, in 625 fms. The species is not known outside 

 southern California. 



