PLATE II. 



page. 



Geodia? clavata ii. sp. Zone spicule with bifid head . 29 



The same. Zone spicule with simple trifid head . 29 



The same. Zone spicule with compound trifid head 29 



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



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

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



head. . . . 31 



The same. Zone spicules with compound trifid head . . 31 



Stelletta sp. Zone spicules with simple trifid head . 33 



Figs. J J, iia Stelletta sp. Zone spicule with simple trifid head 33 



iia Head of spicule seen from below. 33 



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



Figs. I J — 75 Geodia? sp. Simple and compound trifid spicules . 35 



Fig. lb Geodia? sp. Simple trifid spicule ... . 36 



Figs.iy — /SGeodia? sp. Simple trifid 'fork' spicules. . 35 



Fig. ig 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. 



