32 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
4. Neuropodial spines, serrated at the tip, from the 35th to 40th setiger, posteri- 
orly not arranged in cinctures. Capillary setae ordinary. 
C. gracilis sensu Hartman (1961) (see below) 
Neuropodial spines from the 45th to 90th setiger, posteriorly arranged in 
very marked cinctures. Capillary setae ordinary. . .C. setosa Malmgren 
Neuropodial spines from about 70th neuropod, tending to form cinctures 
posteriorly. Long, threadlike capillary setae from about the 13th setiger. 
C. spinosa Moore 
REEL 
Ujja/77**“ “thy 
thE ig 
Ficure 7.—Caulleriella annulosa: a, acicular spine. Chaetozone acuta, new species (seta 
from median foot): b, capillary seta; c, acicular spine. Chaetozone berkeleyorum, new 
species (setae from 40th neuropodium): d and g, capillary setae; f, acicular spine. Chaeto- 
zone gracilis (holotype, setae from about 85th setiger): g, capillary seta; 4, acicular spine. 
Tharyx secundus, new species: i, detail of anterior capillary seta; j, neuroseta with short 
tip from 43rd setiger. Tharyx serratisetis, new species: k, detail of notoseta from 10th 
parapodium; /, serrated neuroseta from median region of body. 
Chaetozone acuta, new species 
FIGURES 7), c 
Chaetozone sp. I Banse et al. [in press]. 
Typrs.—Holotype: USNM 36275, from station 5, 47°10’48”” N, 
122°50’00’’ W (May 1963). Paratypes: USNM 36276 (2) and 36277 
(2), from the same station (February and May 1968). 
Many complete immature specimens of up to 155 setigers, 15 mm 
long and 1.1 mm wide, are at hand from stations 3, 5, 6, and 8, but 
no complete, mature individuals are available. 
Description.—A cirratulid species with a conical prostomium on 
which one pair of eyespots is visible in freshly preserved material. 
There is a 2-ringed achaetous region that is about as long as it is 
