34 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
to the wings of the acicular spines since they occur also in the local 
representatives of C. setosa Malmgren; this feature seems not to have 
been reported previously for C. setosa. Among the Chaetozone species 
listed by Hartman (1959, 1965b) to which C. berkeleyorum, new species, 
and C. curvata Hartmann-Schréder are to be added, the new species 
seems to be unique by the character of the capillary setae in the middle 
part of the body. For the characters distinguishing C. acuta from the 
other Pacific species, see page 31. 
Chaetozone berkeleyorum, new species 
Ficures 7d-f 
Caulleriella viridis pacifica.—Berkeley and Berkeley, 1942, p. 197.—Not Berkeley, 
1929, p. 307 [fide Berkeley and Berkeley, 1950, p. 57]. 
Caulleriella gracilis—Berkeley and Berkeley, 1950, p. 57; 1952, p. 37 partim. 
[Not Chaetozone gracilis (Moore); see p. 35 of this paper]. 
Chaetozone sp. II Banse et al. [in press]. 
Typrs.—Holotype: USNM 35286. Paratypes: USNM 36251 (2). 
All from the littoral of Skidegate Narrows, Queen Charlotte Islands. 
(Collected in 1935.) 
There are two complete specimens and an anterior fragment from 
the littoral of Skidegate Narrows in the Queen Charlotte Islands, 
which are in the Berkeley Collection of the U.S. National Museum 
and which have been reported by Berkeley and Berkeley (1950), 
and one badly damaged anterior fragment from our station 7. The 
holotype is the largest specimen, has 72 setigers, and is 12 mm long, 
with 1 mm greatest width. 
Description.—The prostomium is triangular but unusually blunt 
by being slightly broader than long. Eyes are not visible. The palps 
seem to insert on the anterior margin of the first setiger. In the vial 
from Skidegate Narrows, detached grooved palps of 4-5 mm length 
are present. In the Canadian animals, the segments lengthen in 
the general! region of the fortieth setiger. In the Puget Sound specimen, 
only the approximate 10 first setigers are fairly crowded; thereafter 
they are about half as long as they are wide. There are very short 
gills above some of the notopodia, at least to about the sixtieth 
setiger. Even in posterior setigers, the segments are fairly cylindrical 
although with clear demarcations, in contrast to those of C. setosa 
Malmgren. The anus appears to be displaced dorsally. 
In the anterior 8 to 10 setigers, there are less than a dozen each 
of dorsal and ventral capillary setae, some of them one-third the body 
width. Subsequently, the notosetae shorten. From the seventh to 
tenth neuropodium, one to three capillary setae appear that are 
slightly widened in their middle portion (fig. 7d). Two-thirds of the 
widened portion is finely serrated when seen under 400. Scales 
