DENDY CALCAREOUS SPONGES 91 



DESCRIPTIONS OF PLATES. 



PLATE I. 



Fig. 1. Sycon yrantioides n.sp. (R.N. III. 4). X 4. 



Figs. 2, 2a. Grantessa hastifera (Row) (Parts of R.N. III. 2). X 2. 



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

 Fig. 4. Leucandra doniiani Dendy, var. tenuiradiata nov. (R.N. IV. 8). X 3. 



4. Leucandra donnani Dendy, var. tenuiradiata nov. (R.N. IV. 17o). o, vent; X 3. 



,, 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 dtvarkaensis n. sp. (R.N. XXIII. 6). X If. 



PLATE II. 



Figs. 7a-7/". Grantessa hastifera (Row) (R.N. III. 2). 



Fig. la. Dermal triradiates. X 90. 



,, 76. Gastral triradiates. X 90. 



. 7c. Subgastral sagittal triradiates. X 90. 



Id. Tubar triradiates. X 90. 



If. Subdermal pseudosagittal triradiates. X 90. 



If. Large oxeote, front view. x 90. 



7,/". do. do. side view. x 90. 



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



Figs. 8a-8ff. ffeteropia glomerosa (Bowerbank) (R.N. I.). 



Fig. 8a. Dermal triradiates. X 166. 

 ,, 86. Gastral triradiates. X 166. 

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

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



ray of the latter being broken off. b, basal ray ; o 1 , centripetal paired ray ; o 2 , outer 



paired ray. x 166. 



,, 8/. Complete subdermal pseudosagittal triradiate ; lettering as before. X 166. 

 8g. Dermal oxea. X 50. 



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



Fig. 9a. Dermal triradiate. X 90. 



96. Gastral quadriradiate. X 90. 



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



M. 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. 



,, lOrf. Triradiates of the chamber layer. X 100. 



,, I Of. Inner end of large oxeote. x 100. 



