EXPLANATION OF PLATES. 221 
1. Holothuria pervicaz; Mer; dorsal view. 
2. Pseudocucumis aciculata; Mer; dorsal view. 
3. Holothuria impatiens var. pulchra, juv.; Mer; dorsal view. 
4. Holothuria edulis; Erub; side view. 
5. Holothuria impatiens; Mer; dorsal view of anterior end. 
All figures natural size. 
PraTeE 20. 
Fia. 1. Comanthus alternans; Mer; calyx and part of two rays; aboral surface. 
2. Comanthus luteofusca; holotype; Mer; aboral surface. 
3. Comanthus luteofusca; holotype; Mer; oral surface. 
4. Comanthus samoana; Mer; aboral surface. 
All figures natural size. 
1. Oligometra anisa; Mer; side view of specimen from which fig. 10, pl. 1, was drawn. 
2. Oligometra anisa; holotype; Mer; aboral surface. 
3. Oligometra anisa; holotype; Mer; oral surface. 
4. Lamprometra gyges; Mabuag; aboral surface. 
5. Lamprometra gyges; Mabuag; oral surface. 
6. Heterometra delicata; holotype; Friday Island; aboral surface. 
All figures natural size, except fig. 6, which is slightly enlarged. 
Fia. 1. Lamprometra brachypecha; holotype; Mer; oral surface. 
2. Lamprometra brachypecha; holotype; Mer; aboral surface. 
3. Lamprometra gyges; Marshall Islands; side view. 
4. Stephanometra stypacantha; holotype; Mer; aboral surface. 
All figures natural size except fig. 3 which is somewhat enlarged. 
1. Goniodiscaster coppingeri; Adolphus Island; aboral surface. 
2. Goniodiscaster coppingeri; Adolphus Island; oral surface. 
3. Asterina nuda; holotype; Weier; aboral surface. 
4. Asterina nuda; holotype; Weier; oral surface. 
5. Asterina anomala; paratypes; Mer; aboral surface. 
All figures natural size. 
Fia. 1. Oreaster nodosus; Jappen Island, New Guinea; aboral surface. 
2. Habroporina pulchella; holotype; Mer; aboral surface. 
3. Habroporina pulchella; holotype; Mer; oral surface. 
Fig. 1 is not quite natural size, while figs. 2 and 3 are X 2.5. 
PLATE 25. Oreaster nodosus. 
Fia. 1. Side view of specimen shown on pl. 24, fig. 1. : 
2. Aboral view of larger specimen with more complex dorsal spines; Jappen Island, New Guinea. 
Fig. 1 is about 0.9 nat. size, while fig. 2 is about 0.8. 
PLATE 26. 
Fig. 1. Linckia levigata; Mer; aboral surface. 
2. Asterina anomala; paratype; Mer; aboral surface. 
3. Asterina anomala; paratype; Mer; oral surface. 
4. Habroporina pulchella; holotype; Mer; aboral surface. 
5. Habroporina pulchella; holotype; Mer; oral surface. ; 
Fig. 1, nat. size; figs. 2 and 3, X2.5; figs. 4 and 5, nat. size. 
Fia. 1. Leiaster speciosus; Mer; aboral surface. 
2. Leiaster speciosus; Mer; oral surface. 
3. Ophidiaster lioderma; holotype; Mer; aboral surface. 
4. Ophidiaster lioderma; holotype; Mer; oral surface. 
All figures natural size. 
Fia. 1. Tamaria fusca; Holothuria Bank, northwestern Australia; aboral surface. 
2. Tamaria fusca; Holothuria Bank, northwestern Australia; oral surface. 
3. Nardoa variolata; Zanzibar; aboral surface. 
4. Nardoa variolata; Zanzibar; oral surface. u 
Figs. 1 and 2 about 2.5, figs. 3 and 4 about 0.9, nat. size. 
PLaTE 29. 
Fia. 1. Nardoa rosea; holotype; Mer; aboral surface. 
2. Nardoa rosea; holotype; Mer; oral surface. 
3. Ophidiaster granifer; Erub; aboral surface. 
4. Ophidiaster granifer; Erub; oral surface. 
5. Fromia elegans; holotype; Mer; aboral surface. 
6. Fromia elegans; holotype; Mer; oral surface. 
All figures natural size. 
