Trans. N.Z. INST., Vor. 54. í 
y PLATE 42. 
Fie, 1.— Chaetomorpha Darvinii, a green alga with turgid thallus, growing at low-tide 
2 
Fre. 2.— Nerita melanotragus. Normal and perio 
Eje of the gregarious tunicate Cynthia oim | Auckland Harbour. 
— Cluster of Elminius plicatus on shell of Mytilus planulat 
рк pis puniceus. Under-s surface, showing merani pue of modified 
PN 
gue gt 
pectoral and pelvic fins 
6.— Acanthochinus littoreus, a ‘fish t that lives under stones between tide-marks. 
7.—Holdfast of Maerocystis pyrifera, a kelp- -weed growing in deepish water. 
Face p. 512.) 
