Annelids of Marshall Islands — Reish 
213 
Irma? angustifrons Grube [sic]. Hartman, 
1954*, p. 633. 
Eniwetok: Parry (L), Aaraanbiru (L), 
Bogen (O). Indo-Pacific Ocean. 
Leocrates chinensis Kinberg 
Hartman, 1954^, p. 628; Imajima and Hart- 
man, 1964, p. 82; Hartmann-Schroder, 1965, 
p. 94. Eniwetok: Parry (L), Bogombogo (O), 
Engebi (O), and by Hartman from Lidilbut 
(O). Bikini: Enyu (O). Circumtropical to sub- 
tropical. 
Family Pilargiidae 
Ancistrosyllis rigid a Fauvel 
Fauvel, 1953, pp. 110-111, fig. 53; Hartman, 
1954^, p. 629. Eniwetok: Aaraanbiru (O) and 
reported by Hartman from Lidilbut (O). 
Bikini: Enirik (O) by Hartman. Cosmopolitan. 
Family syllidae 
KEY TO THE SPECIES FROM MARSHALL ISLANDS 
1. Palps not fused; cirri beaded 
Subfamily Syllinae 2 
1. Palps fused at base Subfamily 
Eusyllinae .... Odontosyllis hyalina 
1. Palps entirely fused Subfamily 
Exogoninae 14 
2. Setae all simple . . . Haplosyllis ... 3 
2. Compound setae present 4 
3. Antennae appearing non-beaded; palps 
united partly at base; all setae with two 
small teeth at tip; two eyes 
Haplosyllis aberrans 
3. Antennae clearly beaded; palps separated; 
setae with one or two teeth at tip; 4-6 
eyes Haplosyllis spongicola 
4. A hood arising from the posterior part of 
the head (also present in Odontosyllis ); 
tooth at posterior end of pharynx 
Opistosyllis 5 
4. No hood present; tooth at anterior end of 
pharynx 7 
5. Body covered with papillae 
Opistosyllis australis 
5. Body smooth 6 
6. Setae bidentate Opistosyllis longicirrata 
6. Setae entire Opistosyllis brunnea 
7. Proboscis with a circular crown of teeth 
Trypanosyllis zebra 
7. Proboscis smooth 8 
8. Simple furcate setae present 
Syllis gracilis 
8. Setae all compound except for simple 
spines in posterior parapodia 
Typo syllis 9 
9. Dorsal cirri with less than 20 articles 10 
9. Dorsal cirri with more than 20 articles 11 
10. All compound setae bidentate 
Typo syllis hyalina 
10. Some setae unidentate 
Typo syllis ar miliar is 
11. Some articles of dorsal cirri with black 
pigment Typo syllis cirropunctata 
11. Dorsal cirri uniform in color 12 
12. Proboscis short; posterior acicular setae 
distinctly bidentate 
Typo syllis prolifera 
12. Proboscis long; posterior acicular spines 
entire or nearly so (tips often broken) 13 
13. Blade of compound setae becomes pro- 
gressively smaller posteriorly 
Typo syllis brachychaeta 
13. Blade of compound setae varies little 
Typo syllis variegata 
14. Dorsal cirri alternately short, bulbous and 
beaded Parasphaerosyllis indica 
14. Dorsal cirri swollen at base, pointed at 
tip Sph aero syllis pirifera 
14. Dorsal cirri cylindrical Exogone verugera 
Subfamily syllinae 
Haplosyllis aberrans Fauvel 
Fauvel, 1939, pp. 290-291, fig. 3; Hartman, 
1954^, p. 629. Eniwetok: Lidilbut (O) by 
Hartman. Indochina and Eniwetok Atoll. 
Haplosyllis spongicola (Grube) 
Fauvel, 1953, p. 147, fig. 75; Hartman, 
1954^, p. 629; Hartmann-Schroder, 1965, p. 
108. Eniwetok: Parry (L), Rigili (O), Bo- 
gombogo (O), Aaraanbiru (G,L), Aniyaanii 
(L), Japtan (L). Bikini: Enyu (L). Cosmo- 
politan. 
Opistosyllis australis Augener 
Fauvel, 1953, p. 156, fig. 80 g-i; Imajima 
and Hartman, 1964, p. 120. Eniwetok: Parry 
