6o 



(PI. XII, fig. 9 l — /.) ; 1031 and others. They are still very large, but somewhat modified in the 

 following specimens: large, but relatively longer than in the first group in 1455c (PI. VIII, 

 % 5 77—"); 1421 (PI- VIII, fig. 6 <;— 3); B.M. 27 (PI. VIII, fig. 1 ? )- B.M. 37, B.M. 38 

 (PI. VIII, fig. 2 X); 1945 (PI. VIII, fig. 3 TT— 7); 1480 (PI. IX, fig. 1 o—p)- 42 6 c (PI. IX, fig. 7*). 

 1949 ( PL IX ' fig- 9 «—7); 426 a (PI. IX, fig. 4 „— ,)• 42 6 b (PI. IX, fig. 5 X— v); 426 d (PI. IX, 

 fig. 6 *, ê ); 92a (PI. X, -fig. 1 ii— 1) ; B.M. 10 (PI. X, fig. 2 X— v); B.M. 1 (PL X, fig. 3 », ) 5 

 B.M. 16 (PI. X, fig. 4 rj— x); B.M. 13 (PI. X, fig. 6 >;— X); B.M. 3 (PI. X, fig. 7 «—>,); 

 B. M. 20 (PI- XII, fig. 1 li). On the other hand we find specimens, which are large, but 

 comparatively shorter than in the first group in: B.M. 12 (PI. VIII, fig. 7 a — o\ 1) ; 426 c! (PI. IX, 

 fig. 6 •;) ; 92 a (PI. X, fig. 1 v) ; B. M. 10 (PL X, fig. 2 x) ; B. M. 3 (PL X, fig. 7 x, X) ; B. M. 26 (PL XII, 

 fig. 5 «); B.M. 30 (PL XII, fig. 6 f 3 —?) ; M.N. 44 (PL XII, fig. 8 <?—„); G.M. 73 (PL XII, 

 fig. 9 x) ; 1421, 1945, B. M. 38. Again quite different look the large and very elongated, hence 

 slender spinispirae as e. g. occur in: 1480 (PL IX, fig. 1 ff, t); 426b (PL IX, fig. 5 3 — t); 

 426 a (PL IX, fig. 1 £ — Ö; 1949 (PL IX, fig. 9 S— 6)5 1988 (PL IX, fig. 8 cc— E ) ; 426 c (PL IX, 

 fig- 7 «— 7); 410 (PL IX, fig. 3 s,,j); B.M. 13 (PL X, fig. 6 „); B.M. 1 (PL X, fig. 3 0). 

 B.M. 26 (PL XII, fig. 5 3); B.M. 20 (PL XII, fig. 1 x — f). If we compare the figures mentioned 

 above, we see that they gradually pass into each other. Moreover we see that they are united 

 by transitions to the smaller spinispirae till we finally come to the very minute ones. These 

 transitions are likewise observed by previous authors in many cases. 



We have stated before (p. 23), that the peculiar spinispirae Lendenfeld described ot 

 "■ Vioa florida" are by no means restricted to that "species"; they are also found by Topsent 

 in " Alcyonium purpureum". I found them in several specimens: B.M. 12, B.M. 24, B.M. 27, 

 B.M. 38, 92a (PL X, fig. ijj.f); 305a, 426a, 1455c and others. 



The following tables illustrate the different sizes tylostyli and spinispirae reach in Spira- 

 strella pterpurea. 



