298 MADREPORARIA. 
FIG. PLATE XVIII. 
1. From P. Great Barrier Reef 34. 
2: »  . Great Barrier Reef 35; for growth-form, cf. Pl. XXI. fig. 24. 
a: »  £. Great Barrier Reef 36; es Pl. XXI. fig. 25. 
4. ,, ~P. Great Barrier Reef 37; 2 Pl. XXI. fig. 26. 
5. 4, P. Great Barrier Reef 38; 2 Pl. XXI. fig. 27. 
6. »  £. Great Barrier Reef 39; A Pl. XXI. fig. 28. 
ie » . Great Barrier Reef 40; * Pl. XX. fig. 3. 
8. »  P. Great Barrier Reef 41; Ee Pl. XX. fig. 4. 
9, » . Great Barrier Reef 42 ; re PV XeXe tig. o, 
PLATE XIX. 
1. Growth-forms of P. Great Barrier Reef 3, x #; for the calicles, cf. Pl. XIV. fig. 3. 
2. = P. Great Barrier Reef 4, X 2; . Pl. XIV. fig. 4. 
33. is P. Great Barrier Reef 5, x 3; 3 TEAL OY airegs (57 
4, = P. Great Barrier Reef 6, x 4; a Pl. XIV. fig. 6. 
DE 4 P. Great Barrier Reef 9, x 3; = PIER: fig! 
6. + P. Great Barrier Reef 12, x 2. 
ie xs P. Great Barrier Reef 10, x #; for the calicles, cf. Pl. XV. fig. 1; the 
dark spots indicating the calicles are not pits, but are due to the 
orange tinge of the aperture. 
8. = P. Great Barrier Reef 11, x 2; for the calicles, cf. Pl. XV. fig. 2. 
). - P. Great Barrier Reef 17, x 3; Hs PROV figieds 
PLATE XX. 
1. Growth-form of P. Great Barrier Reef 16, x 4; for the calicles, ef. Pl. XVI. figs. 8 and 9. 
2. Pe P. Great Barrier Reef 19, x 4; 5 Pl. XV. fig. 9. 
3 P. Great Barrier Reef 40, x 2; . Pl. XVIII. fig. 7. 
4. = P. Great Barrier Reef 41, x 2; + Pl. XVIII. fig. 8. 
5p 2 P. Great Barrier Reef 42, x 4; x 125 VIMO, ses, Uh 
PLATE XXI. 
LITHOGRAPHIC REPRESENTATIONS OF GROWTH-FORMS. 
With approximate reductions, 
1. Growth-form of P. Great Barrier Reef 1, x 4; for the calicles, ef, Pl. XIV. fig. 1. 
2. . P. Great Barrier Reef 2, x 4; f Pl. XIV. fig. 2. 
3. * P. Great Barrier Reef 7, x 4; Pl, XIV. fig. 7. 
4, & P. Great Barrier Reef 8, x 4; - Pl. XIV. fig. 8. 
5. , P. Great Barrier Reef 13, x 3; $5 Pl. XV. fig. 3. 
