AUSTRALASIAN ANTARCTIC EXPEDITION. 
16 
DESCRIPTION OF PLATES. 
Fig. 1 .—Leucosolenia botryoides (Ellis and Solander) var. Macquariensis nov., 
R.N. I, 11, X about If. 
Fig. 2.— Leucetta antarctica n. sp. R.N. VI, about natural size. 
Figs.3a-3d. Leucetta macquariensis n. sp., about natural size. 
3 a, R.N. I. 1; 36, R.N. I 2; 3c, R.N. I 3; 3d, R.N. V 2. 
Fig. 4. Grantia cirrata Jenkin var. aurorae nov. R.N. IV, 2, X about If. 
Fig. 5.— Leucandra mawsoni n.sp. R.N. Ill, about natural size. 
Figs. 6a- 6e.—Leucosolenia botryoides (Ellis and Solander) var. macquariensis nov. 
R.N. I 11. Spicules, X 280. 6a, triradiates; 66, quadriradiates, facial view; 6c, 
quadriradiates, side view; 6 d, oxea, lying on flat side; 6e, oxea, lying on edge. 
Fig. 7.— Leucetta antarctica n.sp. R.N. VI, Spicules, X 120. 
Figs, 8a-8d.— Leucetta macquariensis n.sp. R.N. I 1. 8a, triradiates, X 120; 
86, large oxea, X 120; 8c, microxea, lying on flat side, X 455; 8 d, microxea, lying on 
-edge, X 455. 
Figs. 9a-9d. —Grantia cirrata Jenkin var. aurorae nov. R.N. IV 1, Spicules. 
9a, Triradiates, X 160; 96, quadriradiates, facial view, X 160; 9c, quadri¬ 
radiates, side view, with the two oral rays broken off, X 160; 9 d, oxea, X 105. 
Figs. lOa-lOd.— Leucandra mawsoni n.sp. R.N. Ill, Spicules, X 160. 10a, 
ordinary triradiates; 106, dermal triradiates, resting on the apices of the three-cornered 
rays; 10c, dermal triradiates lying on two rays, with the third tilted up and broken off; 
lOd, quadriradiate. 
