14 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
by Imajima and Hartman, 1964). A compound seta is shown in 
figure 3). 
Fairly numerous polygonal eggs of up to 60u diameter are filling 
the parapodia of a specimen collected in May at station 5. The species 
seems to be a selective deposit feeder: Intestines of specimens from 
station 5 (mean particle size 0.45 mm) are primarily filled with fine 
materials; in addition, there are sand grains smaller than 0.05 mm. 
Some sand grains and diatom frustules of more than 0.1 mm shortest 
dimension are also present. 
There is no doubt that our specimens belong to Hessle’s species; 
however, the genus Micropodarke Okuda, based on only one specimen 
of M. anemiyai, is said to have no notopodial aciculae, that is, to have 
uniramous parapodia. In view of the variability in the number of 
notopodial aciculae reported by Hessle (1-3; in the specimens checked 
by us, 1-2), it is feasible that Okuda’s specimen was exceptional. If 
this is the case, the generic diagnosis for Micropodarke should be 
amended. The genus would then be very close to Nereimyra, except 
that there are no jaws in Micropodarke. Also N. punctata (Miiller) has 
the mentioned lobes (fig. 37) mediad to the ventral cirri (Banse, 1956). 
Other close genera are Parasyllidea Pettibone and possibly Neopodarke 
Hartman, both with slightly different termination of the proboscis; 
the latter genus lacks notopodial aciculae. Since the armature of the 
proboscis is not a very practical character, it is doubtful that all of 
these mostly monospecific genera should be retained. Nereimyra would 
take precedence over the other names. 
Found at stations 1, 4, 5, and 8. New for the eastern Pacific. Pre- 
viously known from Japan. 
Family PILARGIDAE 
Sigambra tentaculata (Treadwell) 
FIGURE 3k 
Ancistrosyllis tentaculata—Hartman, 1947a, p. 498. 
Sigambra tentaculata.—Pettibone, 1966, p. 182. 
There are several animals. The longest one has at least 135 setigers 
and is 2 cm long. 
The deeply indented posterior margin of the prostomium is rarely 
visible. The proboscis has 12-13 triangular closely spaced terminal 
papillae of equal size and also some medium-sized papillae on the 
outside. There seems to be some variability of this character—14 
in the type (Pettibone, 1966), 8 in other Atlantic material (Hartman, 
1965a). The curved notopodial hooks are usually found from the third 
setigerous segments onward, rather than from the fourth as in the type 
material from Long Island Sound (Pettibone, 1966); occasionally they 
begin with the fourth setigerous segment in our material. A fine 
