220 THE ECHINODERMS OF TORRES STRAIT. 
PLATE 12. 
Fia. 1. Ophiarthrum pictum; Mer; disk and base of one arm; aboral surface. 
. Ophiopezella spinosa juv.; Mer; aboral surface. 
. Ophiura kinbergi juv.; Mer; aboral surface. 
. Ophiacantha discoidea; Mer; aboral surface. 
Ophiarachnella gorgonia; Mer; aboral surface. 
Ophionereis porrecta; Mer; disk and one arm; aboral surface. 
. Ophiarachnella septemspinosa; Mer; disk and one arm; aboral surface. 
. Ophioplocus imbricatus; Mer; disk and one arm; aboral surface. 
All figures natural size. 
ONOMRWNe 
PLATE 13. 
Fria. 1. Ophiarthrum elegans; Mer; disk and one arm; aboral surface. 
. Ophiomastix flaccida juv.; Mer; aboral surface. 
. Amphiura septemspinosa; holotype; Mer; aboral surface. 
. Ophiocoma parva; paratype; Mer; aboral surface. 
. Ophiothela hadra; holotype; Mer; aboral surface. 
. Ophiactis luteomaculata; holotype; Mer; aboral surface. 
. Ophiocoma brevipes; Mer; disk and one arm; aboral surface. 
. Ophiocoma pica; Mer; disk and one arm; aboral surface. 
. Ophiocoma scolopendrina juy.; Mer; aboral surface. 
All figures natural size. 
CONOR WNH 
PuaTeE 14. 
Fia. 1, Ophiomastix asperula. 
2. Ophiomastix mixta. 
3. Ophiomastix corallicola; paratype. 
4. Ophiomastix caryophyllata. 
5. Ophiomastix janualis. 
6. Ophiomastix annulosa. 
Each figure represents aboral surface of disk and one arm of an adult specimen from Mer. Nat. size. 
Puate 15. 
Fia. 1. Ophiothrix striolata juv.; Friday Island; aboral surface. 
2. Ophiothrix nereidina; Mer; disk and one arm; aboral surface. 
3. Ophionephthys octacantha; holotype; Friday Island; all arms are broken; aboral surface. 
4. Ophiothrix martensi australis; paratype; Madge Reef, Thursday Island; disk and one arm; aboral 
surface. 
. Ophiothrix longipeda, yellow form; Mer; disk and one arm; aboral surface. 
. Ophiothrix rhabdota; paratype; Mer; disk and one arm; aboral surface. 
. Ophiothrix rhabdota; paratype; Mer; bit of arm, much enlarged to show the three longitudinal yellow 
stripes; aboral surface. 
. Ophiothrix nereidina juv.; Mer; aboral surface. 
. Ophiothrix nereidina juv.; Mer; disk and base of one arm enlarged to show beautiful mosaic pattern; 
aboral surface. 
All figures natural size except 7 and 9 which are enlarged about eight times. 
NI 
© 0 
Puatp 16. 
Fia. 1. Ophiactis hemiteles; holotype; Mer; aboral surface. 
. Ophiomaza obscura; Mer; aboral surface. 
Ophiomaza cacaotica var. picta; Mer; aboral surface. 
“Ophiothriz trilineata; Mer; aberrant coloration; aboral surface. 
Ophiothrix trilineata; Mer; typical coloration; aboral surface. 
Ophiothrix trilineata; Mer; bit of arm enlarged to show trilineate coloration; aboral surface. 
Amphiocnida dilatata; Mer; aboral surface. 
Ophiothrix stelligera juv.; Mer; aboral surface. 
All figures natural size, except fig. 6, which is X 10. 
WMID Poo ty 
PuatE 17. 
Fia. 1. Centrechinus savignyi; Mer; aboral surface of test, spines and tubercles being entirely omitted, so as 
not to obscure the characteristic color-pattern. 
. Centrechinus savignyi; Mer; oral surface of test without tubercles or spines. 
. Centrechinus setosum; Mer; aboral surface of test without tubercles or spines. 
. Centrechinus setosum; Mer; oral surface of test without tubercles or spines. 
. Temnotrema sculpta; Mer; aboral surface. 
. Tripneustes gratilla; Mer; aboral surface. 
All figures natural size, except fig. 5, which is X 2.5. 
Oop wh 
PLATE 18. 
Fia. 1. Stichopus chloronotus; Mer; side view of anterior end. 
2. Thelenota ananas; Mer; dorsal view of posterior end. 
3. Thelenota anax; holotype; Mer; side view of anterior end. 
4, Stichopus horrens; Mer; dorsal view of anterior end. 
All figures natural size. 
