28 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Mo oO 9 Po 
GS Co SI GS Ox GS ©9 fo IP 
5 3h 
PERCY SLADEN TRUST EXPEDITION 
DESCRIPTION OF PLATES 
Pate 1. 
(All the Figures in this Plate are from photographs.) 
Leucosolenia gardinert n. sp. R.N. cxx. 7. x4. 
Leucosolenia gardinert nv. sp. R.N. oxx. 11. x5. 
Dendya prolifera n. sp. x 24. 
Dendya prolifera n. sp. Upper portion of specimen, x 64. 
Leucascus simplex Dendy. R.N. xx. 2,4. x 3. 
Leucetta chagosensis n. sp. R.N. xix. 11. x 23. 
Leucetta pyriformis n. sp. R.N. xc. 5,A. x5. 
Pericharaz heteroraphis Poléjaeff. R.N. cxvi. x 24. 
Pericharax peziza n. sp. R.N. XXVI. x 2. 
PLATE 2. 
(All the Figures in this Plate are from photographs.) 
Leucaltis clathria Haeckel. R.N. oxi. 2. x 24. 
Leucaltis clathria Haeckel. R.N. xxxix. 1. x 24. 
Grantia indica n. sp. R.N. xc. 4,B. x 64 
Leucandra echinata Schutfner. R.N. LXXXIxX. 1. x 4. 
Leucandra wasinensis Jenkin sp. R.N. vu. 7. x6. 
Grantessa hastifera Row sp. R.N. xxi 1. x4. 
Leucilla proteus n. sp. R.N. ovi 1,8. x 6. 
PLATE 3. 
Leucosolenia gardineri n. sp. R.N. Cxx. 7. Spicules, x 370. 
a. Triradiates; 6. quadriradiates. 
Leucosolenia gardineri n. sp. R.N. cxx. 11. Spicules, x 370. 
a. Triradiates; 6. quadriradiates. 
Leucosolema gardineri nu. sp. R.N. cxx. 11. Part of a thin section stained with borax 
carmine and picro-indigo carmine, x 666. 
ep. flattened epithelial cells; nu. nucleus of ovum; ov. ovum (cytoplasm and yolk granules) ; 
yb. yellow bodies. 
4. 
Dendya prolifera nu. sp. Section through two branching diverticula of the central gastral 
cavity (radial tubes), x 30. 
5. 
C. 
é. 
RS) 
2 
c.g. central gastral cavity; b.d. branching diverticula (radial tubes). 
Dendya prolifera n. sp. Spicules, x 278. 
a. triradiates from the gastral membrane; 0. quadriradiate from the gastral membrane ; 
triradiate from end of young radial tube; d. quadriradiate from middle of radial tube; 
apical rays of quadriradiates from radial tube. 
PLATE 4. 
Leucascus simplex Dendy. R.N. xxi. 2, 4. Spicules, x 278. 
a, triradiates; b. quadriradiates; a.r. apical ray. 
Leucetta chagosensis u. sp. R.N. cxix. 11. Spicules, x 67. 
Leucetta pyriformis n. sp. R.N. xc. 5,4. Spicules, x 107. 
a. large triradiate from dermal surface; 6. small triradiates; c. intermediate triradiate ; 
quadriradiate. 
