26 



Fig. 4. Et Stykke af en Arm med Pinnuler, for- 

 størret. 



a. Dorsalnerven. i, b. Ganglierne paa 

 Dorsalnerven. c. Ventralnerven. d. Fort- 

 sættelse af Ventralnerven i Pimmlen. 



Tab. III. Fig. 1. En Bathycrinus Carpenteri med ny Krone- 

 dannelse paa en gammel Stilk, naturlig 

 Størrelse. 



— 2. Den sammes øverste Del. forstørret. 



a. Sømmen imellem Basalerne og Iste 

 Radiale. h. Leddeflade imellem Iste og 

 2det og imellem dette og 3die Radiale. 

 c. Basalerne paa den gamle Stilk, dannende 

 en fast, glat Ring. 



— 3. En Bathycrinus Carpenteri med ny Krone- 



dannelse paa en gammel Stilk, naturlig 



Størrelse. 



a. En Alcyonidekoloni. 



— 4. Den sammes øverste Del, forstørret. 



a. Basalerne. b. Radialerne. r. Fuldstæn- 

 dige Led imellem Iste og 2det og imellem 

 dette og 3die Radiale. 



— 5. En Bathycrinus Carpenteri med ny Krone- 



dannelse paa en gammel Stilk, besat med 

 Hydroider. naturlig Størrelse. 



— 6. Den sammes øverste Del, forstørret. 



a. Tydeligt Led imellem 2det og 3die Ra^ 

 diale. b. Hydroiderør. 



— 7. En normal udviklet, ung Bathycrinus, na- 



turlig Størrelse. 



— 8. Den samme, forstørret. 



a. Stilkens Led. b. Sommene paa de sam- 

 menvoxede Basaler. c. Kalkklapper og 

 Tentakler. 

 9. Længdesnit af et Stilkled, forstørret. 



a. Netformigt Bindevæv. b. Elastiske Fi- 

 bre, c. Bindevævsmembran (Skede). d. 

 Karret med dets indre Epithelialbeklæd- 

 ning. e. Nervefibriller. /. Karrets Indhold 

 (Blodlegemer). 



— 10. Tversnit at Stilkens Centraldel, forstørret. 



a. Bindevævsmembran (Skede). b. Karret 

 med dets Epithel. c. Nervefibre og Gang- 

 lier, d. Karrets Indhold. 



' — 11. Tversnit af et Nerveganglion i en Pinnula, 

 forstørret. 



fl. h. Nervegrene fra Dorsal- og Ventral- 

 siden (de 4 af Carpenter først beskrevne). 

 c, c. Sidegrene. d. Grene, der dele sig. 



Tab. IV, Fig. 1. Længdesnit af et Stykke af Stilkens Cen- 

 tralaxe, forstørret. 



Fig. 4. A portion of an arm with pinnules, magni- 

 fied. 



a. The dorsal nerve. ' //, b. The ganglia 

 on the dorsal nerve. c. The ventral nerve. 

 d. Continuation of the ventral nerve in 

 the pinnule. 

 Pl. III. Fig. 1. A Bathycrinus Carpenteri, with a new 

 crown formation on an old stalk, lite size. 



— 2. Uppermost portion of the same, magnified. 



fl. The seam between the basals and Ist 

 radial. h. The articular surface between 

 Ist and 2nd, and between that and the 

 3rd radial. c The basals on the old 

 stalk, forming a finn. smooth ring. 

 3. A Bathycrinus Carpenteri. with a new for- 

 mation of crown upon an old stalk; .life size. 

 a. A colony of Alcyonids. 



— 4. The uppermost part of the same, magnified. 



a. The basals. b. The radials. c. Perfect 

 joint between the Ist and 2nd radials, and 

 between that and the 3rd radial. 



— 5. A Bathycrinus Carpenteri witli a new for- 



mation oi crown upon an «ild stalk, covered 

 with Hydroids ; life size. 



— 6. The uppermost part of the same, magnified. 



a. Distinct joint between the 2nd and 3rd 

 radials. b. Tubes of Hydroids. 



— 7. A normally developed young Bathycrinus, 



life size. 



— 8. The same, magnified. 



c. Joint of the stalk. /*. The seams on 

 the concreted basals. c. Calcareous valves 

 and tentacles. 



— 9. Longitudinal section of a stalk joint, magni- 



fied. 



a. Reticular connective-tissue. b. Elastic 

 fibres. c. Connective-tissue membrane 

 (sheath). d. The vessel with its inner epi- 

 thelial covering. e. Nervous fibrils. f. 

 Contents of the vessel (blood corpuscles). 



— 10. Transversal section of the central portion 



of the stalk, magnified. 

 a. Connective-tissue membrane (sheath). 

 />. The vessel with its epithelium. c. Ner- 

 vous fibres and ganglia, d. Contents of 

 the vessel. 



— 11. Transversal section of a nerve ganglion in 



a pinnule, magnified. 



a. h. Nervous branches from the dorsal 

 and ventral side (the 4 described first by 

 Carpenter). r. c. Lateral branches. fl\ 

 Branches that divide themselves. 

 Pl. IV, Fig. 1. Longitudinal section of a portion of the 

 central axis of the stalk, magnified. 



