PLATE II. 



page. 



Fig. i Geodia? clavata n. sp. Zone spicule with bifid head" ... 29 



Fig. 2 The same. Zone spicule with simple trifid head 29 



Fig. S The same. Zone spicule with compound trifid head ... 29 



Fig. 4 The same. Zone spicule with compound trifid head ... 29 



Fig. 5 The same. Head of compound trifid spicule 29 



Fig. 6 Geodia ? coronata n. sp. Zone spicule with simple trifid 



head 31 



Figs. 7, S The same. Zone spicules with compound trifid head ... 31 



Figs, q, 10 Stelletta sp. Zone spicules with simple trifid head 33 



Figs, n, i la Stelletta sp. Zone spicule with simple trifid head 33 



na Head of spicule seen from below 33 



Fig. 12 Geodia? Wrightii n. sp. Zone spicule with simple trifid head 31 



Figs. 13 75* Geodia? sp. Simple and compound trifid spicules 35 



Fig. ib Geodia? sp. Simple trifid spicule 36 



Figs, i j /8 Geodia? sp. Simple trifid 'fork' spicules 35 



Fig. 19 Geodia? sp. Bifid 'fork' spicule 35 



All the figures on this plate are drawn to the scale of 20 diameters by means 

 of the Camera lucida. 



