Plate IV. 



Page 

 Fig. i. Chondrocladia gigantea Arm. Hans. I / 2 102 



— 2. Homceodictya flabclliformis Arm. Hans., somewhat damaged, the dermal membrane almost 



quite wanting. l / 1 118 



— 3. Homwodictya flabclliformis Arm. Hans. A small, club-shaped specimen. '/, 11S 



— 4. Dcndoricella rlwpalum n. sp. Highly contracted specimen with very distinct grooves, 



arranged in a net-like maimer, seen from the concave side; two oscula are seen. I / l . 127 



5. Dcndoricella rhopahtm u. sp. Less contracted specimen, showing three oscula. I / 1 127 



— 6. Myxilla incrustans Johnst. Massive specimen, seen about from above, with three oscular 



cones; the surface very grooved. '/, 132 



— 7. Myxilla incrustans Johnst. Fragment of a specimen with tolerably smooth surface, '/i x 3 2 



— 8. Myxilla rosacea Lieberk., growing on Hydroids. l / 1 138 



9. Myxilla fimbriata Bow. A rather large specimen, to the right below oscula are seen 



closely gathered, otherwise single and scattered. The surface damaged in places. ! f t 141 



— 10. Myxilla Jimbriata Bow. A smaller, roundish specimen, sitting on a shell of a Brachiopod; 



the skin wanting to a great extent. 1 j 1 141 



— n. Myxilla brunnca Arm. Hans. A leaf-shaped specimen, the dermal membrane partly torn 



off. 7i J 44 



