DENDY— CALCAREOUS SPONGES 91 



DESCEIPTIONS OF PLATES.' 



PLATE I. 



Fig. L Syoon grantioides n.sp. (R.N. III. 4). x 4. 



Figs. 2, 2a!. Grantessa hasti/era (Row) (Parts of R.N. III. 2). x 2. 



„ 3, 3a, 36. Heteropia glomerosa (Bowerbank) (Parts of R.N. I.). X 2. 

 Fig. 4. Leucamdra donnani Dendy, var. tenuiradiata nov. (R.N. IV. 8). X 3J. 



„ 4o(. Leuccmdra donnani Dendy, var. tenuiradiata nov. (R.N. IV. 17as). o, vent; X 3f. 



,, 46. Leucandra donnani Dendy, var. tenuiradiata nov. (R.N. III. 5). X 4. 



„ 5. Leucandra wasinensis (Jenkin) (R.N. XXXV. 9). X 5|-. 



„ 6. Leucandra dwarkaensis n. sp. (R.N. XXIII. 6). X If. 



"PLATE IL * 



Figs. 1a~1f". Grantessa hastifera (Row) (R.N. III. 2). 



Fig. la. Dermal triradiates. X 90. 



,, 76. Gastral triradiates. X 90. 



„ 1c. Subgastral sagittal triradiates. X 90. 



„ Id. Tubar triradiates. X 90. 



„ 7e. Subdermal pseudosagittal triradiates. x 90. 



„ If. Large oxeote, front view. x 90. 



„ If do. do. side view. X 90. 



„ If". do. do. outer end, front view. x 360. 



Figs. 8a-%g. Heteropia glomerosa (Bowerbank) (R.N. I.). 



Fig. 8as. Dermal triradiates. X 166. 

 ,, 86. Gastral triradiates. x 166. 

 „ 8c, Gastral quadriradiate, a. r., apical ray. x 166. 

 „ ?>d. Subgastral sagittal, and 8e, subdermal pseudosagittal triradiate in situ ; the outer paired (oral) 



ray of the latter being broken off. 6, basal ray ; o^, centripetal paired ray ; o^, outer 



paired ray. X 166. 

 „ Sy. Complete subdermal pseudosagittal triradiate ; lettering as before. X 166. 

 ,, 8^. Dermal oxea. x 50. 



Figs. 9a— 9o?. Leucandra donnani (Dendy) var. tenuiradiata nov. (R. N. IV. 8). 



Fig. 9a. Derma] triradiate. X 90. 



„ 96. Gastral quadriradiate. X 90. 



,, 9c. Triradiates of the chamber layer. X 90. 



„ ^d. Oxeote. X 90. 



Figs. lOa-lOe. Leucandra dwarkaensis, n. sp. (R.N. XXIII. 6). 



„ lOa. Dermal triradiate. X 100. 



„ 106. Gastral quadriradiate. X 100. 



,, 10c. Subgastral sagittal triradiate (broken). X 100. 



„ lOf/. Triradiates of the chamber layer. x 100. 



„ lOe. Inner end of large oxeote. X 100. 



