22 



Tab. III. Fig. 5. Esperia bihamatifera. 



— 6. do. do. 



— 7. do. do. 

 Tab. IV. Fig. 1. Esperia bihamatifera. 



— 2. do. do. 



— 3. Cladorhiza abyss/cola. 



— 4. do. do. 



— 5. do. do. 



— 6. do. do. 

 — ' 7. do. do. 



— 8. do. do. 



— 9. do. do. 



— 10. do. do. 



— 11. do. do. 



— 12. do. do. 



— 13. do. do. 



— 14. do. do. 



— 15. Pachymatisma Johnstonii. a. To smaa 



Exemplarer; b. af et Snit, Kiselkugle- 

 skorpen med deri opragende Naale ; c, c, 

 to Mia ((/- = 90°); d, en ac 2 sp; e,glst; 

 f, større st; g, to gl fra det indre af 

 Svampen; /;. Kiselprisinerne, der danner 

 gl; i, et Stykke af Overdåden ai en gl. 



— 16. Cladorhiza abyssicola fra Hardangerfjord, 



begge Ender a f et Anker. 



Tab. V. Fig. 1. Geodia parra. 



2. Clavellomorpha minima. 



— 3. Tethya cranium. 



— 4. do. do. 



5, do. do. var. infrequens. a, Mia 



(^<90°); b, Mta (» 90°); c, et 

 Embryo; d, Mta (Vf>90°) fraEmbryo- 

 net; e. et formodentligt yngre Stadium 

 af den samme Naaleform. 



6. 

 7. 

 8. 

 9. 

 10. 



Tab. VI, Fig. 



1. 



2. 



3. 

 4. 

 5. 

 6. 



7. 

 8. 



Thenea muricatu. 



do. do. 



do. do. 



do. do. 



Hyalonema arcticum. a og a', to Naale 

 fra Stilken ; 6, Enden af en saadan Naal ; 

 c, ha r tr sp ; d, har sjjJ; e. ha [5r-\- R sp ). 



Reniera simplex. 

 Reniera oblonga. 

 Reniera relamentosa. 

 Reniera tubulosa. 

 Myxilla brunnea. 

 Myxilla jlabelliformis. 

 Reniera dubia. 

 Rei iler a < vt > iplicata . 



Pl. III, fig. 5. Esperia bihamatifera. 



— 6. du. do. 



— 7. do. do. 



Pl. IV. fig. 1. Esperia bihamatifera 



— 2. do. do. • 



— 3. Cladorhiza abyssicola. 



— 4. do. do. 



— 5. do. do. 



— 6. do. do. 



— 7. do. do. 



— 8. do. do. 



— 9. do. do. 



— 10. do. do. 



— 11. do. do. 



— 12. do. do. 



— 13. do. do. 



— 14. do. do. 



— 15. Pachymatisma Johnstonii. a. Two small 



specimens, b, Aspect of a section; the 

 siliceous spherical crust with the pro- 

 jecting spicules, c, c, Two Mta (rf = 90°) 

 spicules, d, An ac 2 sp spicule, e, A gl st 

 spicule. /, A large st spicule, g, Two 

 gl spicules from the interior of the 

 sponge, h, The siliceous prisms form- 

 ing the gl spicules, i, A portion of the 

 surface of a gl spicule. 



— 16. Cladorhiza abyssicola. from the Har- 



danger fjord. Both extremities of an 

 anchor. 

 PI. V. fig. 1. Geodia parra. 



— 2. Clavellomorpha minima. 



— 3. Tethya cranium. 



— 4. do. do. 



— 5. do. do. Vår. infrequens. a, A 



Mta (<f << 90") spicule, b, A Mta 

 (cp ^> 90") spicule, c. An embryon. d, 

 A Mta ((f ^> 9!0°) spicule on the embryon. 

 e, A, presumably, earlier stage of devel- 

 opment of the same spicular form. 



— 6. Thenea muricata. ' 



— 7. do. do. 



— 8. do. do. 



— 9. do. do. 



10. Hyalonema arcticum. a and a', Two 

 spicules from the stem. />, The extrem- 

 ity of such a spicule, c, A ha r tr sp 

 spicule, d. ha r" sp spicule, e, A ha (5 

 r -f- R sp) spicule 

 Pl. VI. fig. 1. Reniera simplex. . 



— 2. Reniera oblonga. 



— 3. Reniera relamentosa. 



— 4. Reniera tubulosa. 



— 5. Myxilla brunnea. 



— 6. Myxilla Jiabelliformis, 



— 7. Reniera dubia. 



— 8. Reniera complicata. 



