POLYCHjETOUS ANNELIDS OF THE HAWAIIAN ISLANDS. 
1169 
The collection contained fragments of a single specimen. One fragment of the anterior end of the 
body consisted of head and 35 somites. Length, 19 mm. ; breadth, exclusive of parapodia, 5.5 mm. 
Collected at station 3871, at a depth of 13.43 fathoms on bottom of fine white sand. Type no. 5212, 
U. S. National Museum. 
Eunice nicidioformis, new species. 
Body narrow in proportion to length. Largest specimen contained 100 somites, was 43 mm. long, 
and 2.5 mm. wide without the parapodia. There is a slight increase in width from the first to the 
sixth somite, while posterior to this the body tapers gradually to the end. Color in alcohol, light 
brownish yellow, with marked iridescence. Anterior somites show a pearly luster, most noticeable 
in somite 6. 
Prostomium rounded, with median frontal indentation (fig. 49). Median tentacle reaches to 
fifteenth somite, inner laterals to tenth, outer laterals only to third. Tentacular cirri extend to 
Eunice nicidioformis, new species. (49) Head, x 5.5. (50) Anterior parapodium, x 56; d. c., dorsal cirrus; 6r.,gill. 
(51) Ventral seta, x 183. 
anterior face of outer lateral tentacles. All tentacles and cirri articulated, this being most noticeable 
in the outer laterals, which are almost moniliform. Anal cirri two pairs, dorsal ones long, articulated, 
ventral much shorter, pointed. 
Maxillae light brown, apex cylindrical, gently curved. Great dental plates each with 6 teeth, 
margins brown, lateral portions white; left paired plate with 7 teeth, left unpaired with 5; right paired 
with 9. All plates colored only on their inner margins. 
Gills at first sight seem to be absent, whence the specific name. On some anterior appendages, 
however, is a very small gill (fig. 50). On largest, sexually mature individual, these begin on somite 
7 and end on somite 37. 
Parapodium with long unsegmented dorsal cirrus (fig. 50). Ventral cirrus proportionately rather 
large. Simple setae long, flattened, curving gently toward distal end; apex sharp-pointed. Compound 
setae rather slender, basal portion with distal end slightly broader than the terminal portion (fig. 51), 
latter with a terminal and a subterminal tooth, and a “guard” extending slightly beyond the former. 
In anterior parapodia are two large black aciculae. Posteriorly there may appear a third aciculum, 
ending just dorsal to the ventral cirrus. Parapodia with a rounded posterior lobe extending beyond 
the bases of the setae. 
Collected at station 4077, 99-106 fat.hoips, on bottom of fine coral sand and foraminifera; from 
station 4098, 95-152 fathoms, with a bottom essentially like the former, and from station 4101, 143 
fathoms, on coral sand and foraminifera. Type no. 5213, U. S. National Museum, a specimen 47 mm. 
long, collected at station 4098. 
Eunice biannulata Moore. 
Eunice biannulata Moore, New Polychseta from California, Proc. Acad. Nat. Sci. Philadelphia, vol. lvi, 1904, p. 484. 
These show very considerable differences from the specimens described by Moore under the above 
name. Closer examination shows, however, that in the character of setee and jaws, and in mode of 
origin of gills, they agree very closely with his description. In one the head agreed with the type, 
while in the others there had been so much contraction due to the preservation that the precise 
character of the tentacular annulations was hard to determine. The main differences are in size, the 
largest having a length of 190 mm. and a width of 10 mm. 
Collected from station 4551, vicinity of Monterey Bay, California. 
