12 



TORSTEJS GISLEN, CR1NOIDS. 



segment. The indexmark 1 forms the sign of a first regeneration, 2 of a second one, 

 etc. Ex. Br 1 — 2 3 + 4 X 5j 6! 7i 8 X + 9 2 10. etc. ought to be read thus: that the arm 

 was first broken at the syzygy between Br 3 and 4 and from there regenerated, 

 then once more thrown off from the 8 th and then the exteriör part of the arm was 

 again renewed. The distribution of the pinnules is (in Rj) indicated by horizontal 

 lines, whieh are applied below or above the symbol of the segment according as the 

 pinnula is fixed inside or outside the arm. 



r,i i 



ii 



[ni 



2 3 + 1 



III 1 



Br 1 — 2 



Brl — 23 +456+ 7 

 Br 1 — 23 +45 7 . 

 Bil 



III 1—2 IV 1—23 + 4 



■23 + 4567 



l Br 1—23 + 4507 



R„ l 1 



Il 1—23 + 4 



111—23 + 4 



II 1-23 + 4 



R a I 1 ■'. 2 



1—23 1 4 



R 4 I 1 ?2 



(111—23 + 4 



II 1 —23 + 4 



III 1 



111 1 



111 1 



III 1 



(Br 1-23 + 4567. . .13+14 . 



t Brl— 23 + 4567. • . .14 + 15 



f Brl — 23 + 4567. . . 12 + 13 . 



t Br 1 — 2 3 + 4 5 7 . . . 



( Brl — 23 + 4567 . . .11+12. 



2 



l Brl — 23 + 4567 . . . 11 + 12 . . 



Brl,— 2, 3, +4, 5, 0, 7, ... . 



Br \ l — 2,3^4, 5, 6, 7, . . . . 



-M 



III 1 



III 



111 1 



III I 



III 1—2 



III 1 —2 



III 1-2 



III 1—2 



( Br 1 — 2 3 + 4 5 7 . 



1 IV 1 — 23 + 4l Br ' 



( Brl— 23 + 45 7 . 



1 Brl— 23 + 4507 . 



[ Brl— 23 + 4567 . 



i Br 1—23 + 4567 . 



( Brl— 23 + 4567 . 



i Br 1 — 2 3 + 4 5 6 7 . 



23 + 4507 



•23 + 4507 



. . 18 + 19 



12 + 13 . . 



13 + 14 . . 



J Brl 

 \ Brl 



23 + 4507 

 23 + 4507 

 I Br 1—23 + 4567 

 i Br 1 - 2 3 + 4 5 7 

 J Brl— 23 + 4567 

 t Brl— 23 + 4567 

 I Br 1 — 2 3 + 4567 



Il + 12 

 11 + 12 

 11 + 12 



11 + 12 



12 + 13 

 12 + 13 

 12+ 13 



Brl —23 + 45 07 11+1! 



17 + 18 

 17 + 18 



B 5 has exactly the same appearance as B 4 . Regenerate light brown. 



