HYALONEMA (PHIALONEMA) PATERIFERUM. 375 
respectively. m, The average proportion of the anchor-length to the anchor- 
breadth of the large micramphidiscs is in form C 100 to 92, in the forms D, EF, 
and F 100 to 72-76. According to Wilson (loc. cit.), the length of the anchors 
of these spicules is, bothin forms A and B, a third of the length of the whole 
amphidise; the anchors of these spicules are in these two forms therefore 
probably also about equal in respect to the proportion between length and 
breadth. n, Informs A and B the length (20-25 ») of the small micramphidises is 
equal. In forms C and D these spicules are larger, most frequently about 26 and 
24 » long respectively. In forms H and F they are smaller, most frequently 
about 20 and 21 u long respectively. 0, The average proportion of anchor- 
length to anchor-breadth of the small micramphidiscs is in form D 100 to 153, 
in.form C and F100 to 140, and in form # 100 to 114. In the forms A and B this 
proportion is not known. 
The affinities of the six different forms in respect to these further qualities 
are tabulated below :— 
| 3684 (A.A. 17) (form B) 9 abedehlmn 
4651 (form C) 2 eh 
3363 and 3376 
ont Ay 4656 (form D) 1 h y 
4721 (form E) 3 bdl 
SS ——————— es 
% | 4742 (form F) 3 abe 
a a 
3S ¢q . 5 
Bs E 4651 (form C) 4 2 fy eh 
g ; . 2 
5 3684 (A.A. 17) q 4656 (form D) 3 1 z h 
oa ‘ 8 a +e 
L (dostile) ‘o> | 4721 (form E) B 3 =} {loclit 
Z e g 5 
n a 
3 2 | 4742 (form F) # 3 © Jabe 
= = E 
© Ss 4656 (form D) 3 bhn 
a e 
4651 (form C) $ | 4721 (form E) 2 ik 
ah 
a 
4742 (form F) 4 eiko 
4721 (form E) 2 em 
4656 (form D) 
4742 (form F) 4 dflm 
4721 (form E) 4742 (form IF) 7 beghkmn 
According to this table the units of all the fifteen possible pairs of forms, 
with the exception of those of two, coincide with respect to only 1-4 of the 
