EXPLANATION OF THE PLATES, 299 
PLATE XXI.—continued. 
6. Growth-form of specimen 6 of P. Great Barrier Reef 14, x 1; for the calicles, cf, Pl. XV. 
fig. 4, 
ik Fh specimen a of P. Great Barrier Reef 14, x 3. 
8. 3 P. Great Barrier Reef 6, x 4; for the calicles, cf. Pl. XIV. fig. 6. 
), i P. Great Barrier Reef 16, X 3; 3 TAL DY Ge 
10. - P. Great Barrier Reef 20, X 3; Pl. XVI. fig. 1 
ii, 5 P. Great Barrier Reef 22, X 4; ; Pl. XVI. fig. 3. 
12. a P. Great Barrier Reef 15, x 3; ip Pl. XV. fig. 5 
118} A P. Great Barrier Reef 23, x 1; > Pl. XVI. fig. 4, 
14. > P. Great Barrier Reef 24, x 4; 5 Jelh ROWOE, sates, ta). 
1115), & P. Great Barrier Reef 27, x Bi nA Pl. XVII. fig. 1. 
16. + P. Great Barrier Reef 26, X 4; eA Pl. XVI. figs. 8 and 9, 
INTf i P. Great Barrier Reef 25, X 4; . Pl. XVI. figs. 6 and 7. 
18. a specimen 6 of P. Great Barrier Reef 28, x 1; for the calicles, cf. 
Pl. XVII. fig. 2 
19. oF specimen @ of ee same, X 4. 
20. 5 P. Great Barrier Reef 31, x 4; for the calicles, cf. Pl. XVII. fig. 7. 
21. a P. Great Barrier Reef 29, x 4; . Pl. XVII. figs. 3, 4, 5. 
22. 3 P. Great Barrier Reef 30, x 4; es Pl. XVII. fig. 6. 
23. 3 P. Great Barrier Reef 32, x 4; * (? part of spec. 28) 
Pl. XVII. fig. 8. 
24, % P. Great Barrier Reef 35, x 1; 5 Pl. XVIII. fig. 2 
oR), si P. Great Barrier Reef 36, x 3; is Pl. XVIII. fig. 3. 
26. F P. Great Barrier Reef 37, x 4; Pl, XVIII. fig. 4. 
27. 3 P. Great Barrier Reef 38, x 4; Pl. XVIII. fig. 5. 
28. ? P. Great Barrier Reef 39, x 3; nS (? part of spec. 32) 
Pl. XVIII. fig. 6. 
PLATE XXII. 
1. From P. North~Hast Australia 1. 
2. 4 P. North Australia 1; for growth-form, cf. Pl. XXIV. fig. 1. 
3. » L£. North Australia 2; > Pl. XXIV. fig. 5. 
4. » 2. North Australia 3; 53 Pl. XXXYV. fig. 14, 
5. » £. North Australia 4; Pl, XXIV. fig. 3. 
6. » L£. North Australia 5; as Pl, XXIV. fig. 7. 
(he » LP. North Australia 6; » Pl. XXIV. fig. 2. 
8. » L. North Australia 7; a Pl. XXIV. fig. 6. 
9. » PP. North Australia 8; Pl. XXIV. fig. 4. 
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