155 



Tab. X. Pig. 44— 51. Spikier paa Tentakierne og deres 

 Pinnuler, forstørret. 



— 52 — 57. Spikier paa Svælget, forstørret. 



— 58. Fulla Schiertzi, seet halvt fra Bugen, 



halvt fra Siden, naturlig Størrelse. 



— 59. Den samme, seet fra Ryggen, for- 



størret. 



— 60. En Gren af den samme, forstørret. 



— 61. En Polyp, forstørret, a, Spiklerne paa 



Bagkroppen. 



— 62. Tversnit af Stammens Hud, forstørret. 



a, Polyædriske Ectodermceller; b, 

 aflange Ectodermceller i det dybere 

 Lag; c, encellede Slimkjertler; cl, 

 Bum, hvori Spikier ligge, og paa 

 hvis Band aflange Ectodermceller 

 kan sees ; e. det brede, hyaline Binde- 

 vævslag; /, Nutritionskanaler med 

 deres Epithel; g, Bindevævslegemer 

 med Udløbere. 



— 63. En Gren, overskaaret for at vise 



Kanalerne, forstørret. a, 7 Kanaler. 



— 64. Et Tversnit af en stor Grren, for- 



størret, a, det smale Bindevævslag 

 paa Siderne, hvorfra Polyperne ud- 

 gaa; b, det brede Bindevævslag paa 

 Bug- og Rygside. 



— 65. Et Tversnit af en Polyp, omtrent paa 



Midten, forstørret. a, Ectoderm ; 

 b, hyalint Bindevæv; c, Septa; cl, 

 Musklerne paa samme ; e, Svælggruben. 



— 66. Svælget med sine Spikier, forstørret. 

 Tab. XI. Fig. 1. Nephthya flavescens, forstørret. Stregen 



ved Siden betegner den naturlige 

 Størrelse. 



— 2. En Gren, forstørret. 



— 3. En Polyp, forstørret. 



— 4. En Tentakel, forstørret. 



— 5. En Polyp, hvor Forkroppen er betyde- 



ligt opsvulmet, Tentakierne sammen- 

 limede og deres Ender nedbøiede, 

 forstørret. 



— 6. Tversnit af en saadan Polyps Forkrop. 



a, den fortykkede Svælgvæg ; b, 

 Embryoner i forskjellig Ud vikling, 

 opholdende sig i Svælghulheden. 



— 7 — 18. Spikier fra Basalclelen, forstørret. 



— 19 — 23. Spilder fra Stammens nederste Del, 



forstørret. 



— 24 — 28. Spikier fra Stammens øverste Del, 



forstørret. 



Pl. X. Fig. 44 — 51. Spicules of the tentacles and their 

 pinnules; magnified. 



— 52 — 57. Spicules of the gullet; magnified. 



— 58. Fulla Schiertzi, viewed semi-ventrally 



and semi-laterally ; natural size. 



— 59. The same, viewed dorsally; magnified. 



— 60. A branch of the same ; magnified. 



— 61. A polyp; magnified, a. Spicules of the 



posterior body. 



— 62. Transversal section of the dermal 



covering of the stem ; magnified, a. 

 Polyhedrical ectoderm-cells, b. Oblong 

 ectoderm- cells of the deeper layers. 

 c. Unicellular mucous glands. d. 

 Cavities in which spicules are placed, 

 and on whose margins oblong ectoderm- 

 cells are visible, e. The broad hyaline 

 connective-tissue layer. /. ISTutritory 

 ducts with their epithelium. g. Con- 

 nective-tissue corpuscles with prolonga- 

 tions. 



— 63. A branch cut across to shoAv the ducts; 



magnified, a. 7 ducts. 



— 64. A transversal section of a large branch; 



magnified, a. The narrow connective- 

 tissue layer on the sides from which 

 the polyps shoot out. b. The broad 

 connective-tissue layer of the ventral 

 and dorsal sides. 



— 65. A transversal section of a polyp, about 



its mesial part; magnified. a. Ecto- 

 derm, b. Hyaline connective-tissue. 

 c. Septa, cl. Muscles of the same. e. 

 The gullet-cavity. 



— 66. The gullet with its spicules ; magnified. 

 PL XL — 1. Nephthya flavescens ; magnified. The line 



at the side indicates the natural size. 



— 2. A branch of same; magnified. 



— 3. A polyp of same ; magnified. 



— 4. A tentacle of same; magnified. 



— 5. A polyp whose anterior body is con- 



siderably expanded ; the tentacles 

 glued together, and their extremities 

 curved inwards ; magnified. 



— 6. Transverse section of a similar . polyps 



anterior body. a. The tumified gullet 

 wall. b. Embryons, in various stages 

 of development, located in the gullet- 

 cavity. 



— 7 — 18. Spicules from the basal part; magni- 



fied. 



— 19 — 23. Spicules from the lowest part of 



the stem; magnified. 



— 24 — 28. Spicules from the uppermost part 



of the stem; magnified. 



20* 



