Annelids of Marshall Islands — Reish 
223 
eniwetok: Parry (L) and Japtan (O). ma- 
juro : Uliga (O). Cosmopolitan in the warmer 
seas. 
Family magelonidae 
Magelona sp. 
One specimen was taken from sand collected 
from 10 ft of water at the ocean side of Rigili 
Island at Eniwetok Atoll. The worm was small 
and in a poor state of preservation. 
Family cirratulidae 
KEY TO THE SPECIES FROM MARSHALL ISLANDS 
1. One pair of palps arising anterior to setig- 
erous segments ; tentacular cirri few in 
number ............ Dodecaceria laddi 
1. No palps; tentacular filament numerous 2 
2. Dorsal transverse tentacular filaments and 
lateral tentacular filaments begin at same 
segment .............. Cm at ulus sp. 
2. Lateral tentacular filaments begin anterior to 
dorsal transverse group 
Cirri formia semicincta 
C in at ulus sp. 
Hartman, 195 4a, p. 638. Hartman recorded 
three small specimens from Lidilbut Island at 
Eniwetok Atoll. 
Cirri formia semicincta (Ehlers) 
Audouinia semicincta (Ehlers). Fauvel, 1953, 
pp. 330-1, fig. 174 c. 
Cirri formia semicincta (Ehlers). Hartman, 
1954^ p. 629. 
eniwetok: Parry (0,L), Eniwetok (O s L), 
Igurini (L), Rigili (0,L), Bogombogo (O), 
Engebi (0,L), Aaraanbiru (0,L), Aniyaanii 
(O), Japtan (L), and Bogen (O). Hawaiian 
Islands to Red Sea. 
Dodecaceria laddi Hartman 
Hartman, 1954^, p. 638, figs. 176 a-c, 177 
d-h. eniwetok: Parry (0,L), Eniwetok (O, 
L), Igurini (0,L), Rigili (0,L), Bogombogo 
(0,L), Engebi (G,L), Aaraanbiru (L), An- 
iyaanii (L), Japtan (0,L), and Bogen (O), 
and also from Lidilbut (O) as reported by Hart- 
man. bikini: Enyu (0,L). majuro: Uliga 
(O). 
Dodecaceria laddi was described as having 
one pair of palpi and two pairs of tentacular 
cirri; Hartman also reported one specimen with 
only three tentacular cirri. Specimens from the 
present collection were observed possessing from 
two to four pairs of tentacular cirri. One speci- 
men collected from Majuro Atoll on August 
30, 1956, possessed swimming setae along its 
entire length. A pair of red eyespots was present 
on the dorso-lateral side of the prostomium of 
this worm. The possession of swimming setae 
is well known in D. conch arum Oersted (Fau- 
vel, 1927). Marshall Islands. 
Family ctenodrilidae 
Ctenodrilus serratus (Schmidt) 
Hartman, 1944, p. 323, pL 27, figs. 6-7. One 
specimen, measuring 1.0 mm in length, was 
taken from sand collected from 90 ft of water 
in the lagoon off Parry Island, Eniwetok Atoll. 
This is the first report of the species from the 
Marshall Islands. Known previously from Eu- 
rope, West Indies, and the eastern Pacific 
Ocean, the distribution is herein extended into 
the central Pacific Ocean. 
Family opheliidae 
KEY TO THE SPECIES FROM MARSHALL ISLANDS 
1. Lateral gills present Armandia lanceolata 
1. Lateral gills absent Polyophthalmus p ictus 
Armandia lanceolata Willey 
Hartman, 1954^, p. 629; Imajima and Hart- 
man, 1964, p. 306. eniwetok: Parry (L), 
Rigili (O), Engebi (O), and Aaraanbiru (O, 
L). bikini: reported by Hartman from Namu 
(L) and Yomyaran. majuro: Uliga (O). 
Japan and Indo-Pacific region. 
Polyophthalmus p ictus (Dujardin) 
Fauvel, 1953, pp. 360-1, figs. 187 l-o; Hart- 
man, 1954^, p. 629; Imajima and Hartman, 
1964, p. 309; Hartmann-Schroder, 1965, p. 
149. eniwetok: Parry (0,L), Eniwetok (O), 
Igurini (0,L) , Rigili (0,L), Bogombogo (O, 
L), Engebi (0,L) , Aaraanbiru (0,L), An- 
iyaanii (O), Japtan (0,L), Bogen (O), and 
reported by Hartman from Lidilbut (O) . bi- 
kini: Enyu (0,L) and reported by Hartman 
