NO. 3667 POLYCHAETES—BANSE AND HOBSON 23 
gills beginning on the fourth setiger. Furcate setae are present in 
the notopodia beginning on the last few branchial segments (fig. 5e). 
They differ from those figured by Southern in having spines on the 
inside of both arms, rather than on the inside of the long arm only. 
Found at station 4. New for the temperate northeastern Pacific. 
Previously known from the northern Atlantic and southern California. 
Paraonis (Paraonis) ivanovi Annenkova 
Figure 5f 
Paraonis ivanovi—Hartman, 1957, p. 333. 
Our specimens have conical prostomia and no eyes, five to six 
prebranchial setigers, and 10-16 (usually 13) pairs of gills. The 
modified neuropodial, acicular setae are curved, and have hoodlike 
structures on the convex sides. The hooks resemble the figure of 
Annenkova (1934, fig. la) for P. wanovi under X 400. Under X 1000, 
however, the hood appears to be feathered (fig. 5f), and further, it is 
noticeable only on the convex side of the hook, whereas Annenkova 
showed it on both sides of the hook. The pygidium of one specimen 
consists of one large median ventral lobe from which arise two lateral 
cirri. 
Ushakov (1950) regarded P. wanovi and P. gracilis Tauber as the 
same species; however, we find that the modified neuropodial acicular 
setae of P. gracilis specimens from near the type-locality (kindly 
sent by Dr. A. Eliason, from his station 2 in the southern Oresund; 
Eliason, 1920) are without hoods or any similar structures. We 
therefore consider the two forms to be different species, which are 
distinguished only by these setae, as far as we can see from the 
descriptions. The Swedish material did not allow a detailed compari- 
son of other characters. 
Found at stations 2-4 and 6-8. New for the eastern Pacific. Pre- 
viously known from the Sea of Okhotsk and possibly from Murmansk 
(fide Ushakov, 1950). Ushakov (1955) has recorded P. gracilis sensu 
lato also from the Bering Strait, and Chukchi Sea. 
Family APISTOBRANCHIDAE 
Apistobranchus ornatus Hartman 
Apistobranchus ornatus.—Hartman, 1965a, p. 144. 
Numerous specimens were found in January at station 4 but not in 
April. They are characterized by their palps, if present, reaching to the 
fourth setiger, the absence of the ventral cirrus on the first setiger, the 
serrated postsetal neuropodial lamella on the fifth, and the large lobes 
on the postsetal neuropodial lamella on the seventh setiger. Notopodia 
