Plate XVII. 



15, 21 — 23, 30, 34, 37, 3S, 43, 4S, 49 Echinocardium cot-datum. 4, 7, S, 10, ir, 17, 27, 31, 40, 41, 45, 50 Ech. flavescens. 5, 6, 9, 13, 

 J 6, 35, 39 Ech. capensc. 1, 18, 20, 24—26, 28, 29, 32, 33, 42, 44 Ech. penuatifidum. 2, 3, 12, 19, 47, 51, 52 Ech. mediterraneum. 



14, 36, 46 Ech. intermedium. 



Fig. 1 



— 2 



— 3 



— 4 



— 5> 

 6. 



— 7 



— 8, 



— 9 



— 10 



— 11 



— 12 



— J 3 



— 14 



— 15 



— 16 



— 17 



— 18. 



— J 9 



— 20. 



— 21 



— 22 



— 2 3 



— 24 



— 25 



— 26 



— 27 



- 28. 



— 29. 



— 3° 



- 3 1 



— 32 



— 33 



— 34 



— 35 

 -3& 



— 37 



— 38 



- 39 



— 40. 



— 4i 



— 42 



- 43 



— 44 



— 45 

 -46. 



- 47 



— 48. 



- 49 



— 5° 



— 5 1 



— 52 



Echinocardium pennatifidum, tridentate pedicellaria. 2 5/,. 



mediterraneum, valve of tridentate pedicellaria. 7°/,. 

 — — — - rostrate — 5<y,. 



flavescens, — - globiferous side view. (Comp. Fig. 10). 7°/,. 



capensc. valve of small tridentate pedicellaria. (Comp. Figs. 35, 39). 7°/j. 



flavescens, — 



capensc, — 

 flavescens. — 



rostrate 



- ophicephalous 



- small rostrate 

 ■ globiferous 



(Comp Fig. 16). 7%. 



'75/,. 



side view. r 75/,. 



7 %- 



from the inside. (Cmp. Fig. 4). 7°/,. 



7%. 



5 % 



/i- 



— — - small tridentate — 



mediterraneum, valve of globiferous pedicellaria, 

 capense, — - small tridentate — 



intermedium, tridentate pedicellaria. 35/,. 

 cordatum, valve of rostrate pedicellaria. 7%. 

 capense, — - — (Comp. Fig. 6). 7°/,. 



flavescens, — - — side view. (Comp. Fig. 40). 7°/,. 



pennatifidum, valve of globiferous pedicellaria, side view. (Comp. Fig. 29) 



7° 



mediterraneum. - 



pennatifidum, 



cordatum. 



small tridentate 

 rostrate 



7i- 



37 



A 



cordatum. 

 capense, 

 intermedium, 

 cordatum. 



7°/ I 



(Comp. Figs. 28, 32). 5%. 

 (Comp. Fig. 34). Specimen from 

 0resund. 7°/,. 

 tridentate (Mediterranean). 7°/,. 



— - v/x. 



— — 37 /i- 



— — side view. (Comp. Fig. 26). 

 fr. the inside. (Cmp. Fig. 25). 37/,. 

 37/,. («M. Sars»). 

 (Comp. Figs. 20, 32). 37/j. 

 fr. the inside. (Cmp. Fig. 18). 37/,. 



37/:. 



bi- 

 valve of rostrate pedicellaria. (Comp. Figs. 20, 28). 5%. 

 tridentate — 5°/,. 



rostrate (Comp. Fig. 21). 7°/,. (Naples), 



small tridentate pedicellaria. (Comp. Figs. 5, 39). 7°/,. 



pennatifidum, - 



flavescens, — - — 



pennatifidum, — - rostrate 



— — - globiferous 



cordatum (Tamaris), valve of tridentate pedicellaria. 

 flavescens, valve of tridentate pedicellaria. (Bergen). 

 penuatifidum 



- rostrate 



- globiferous 



— - rostrate 

 capense, — - small tridentate — 



flavescens, — - rostrate — 



large tridentate pedicellaria. 37/,. 

 pennatifidum, tridentate — 37/,. 



cordatum. valve of tridentate pedicellaria. 37/,. 

 penuatifidum, rostrate pedicellaria. 37/,. 

 flavescens, globiferous 35/,. 



intermedium, valve of rostrate pedicellaria. 7°/,. 



(Tamaris). 70/, 



y°/, 

 7%. 



(Comp. Figs. 5, 35). 70/,. 

 (Comp. Fig. 17). 70/,. 



mediterraneum. globiferous pedicellaria. 

 cordatum, valve of tridentate pedicellaria. 



globiferous pedicellaria. 35/,. 

 flavescens, rostrate — so/,. 



mediterraneum, clavula. 5°/,. 



rostrate pedicellaria. 35/,. 



37/, 



