PLATE VI. 



Figure 1. — Leucilla connexiva, n. sp. 



(a) Portion of a horizontal section, 



(b) A dermal triradiate spicule, 



(c) A gastric triradiate spicule, 



(d) A subgastric triradiate spicule, 



(e) A subdermal triradiate spicule, 



Diam. 



2. — Leucilla liter, n. 



sp. 



(a) Portion of a horizontal section ; Am, = Amphiblastuhe, 



(!>) A dermal quadriradiate spicule, 



(c) A gastric quadriradiate spicule, . 



(d, e) Two subgastric triradiate spicules, 



(/) Two spermospores, .... 



x 50 



x 100 



x 100 



x 100 



x 1000 



3. — Leuconia multiformis, n. sp. 



(a) Portion of a horizontal section, 



(b) Piece of the dermal surface, 

 (f) A conjectural calcoblast, 



x 30 



x 100 

 x 800 



