258 
Holothuria fioridana 
measurements and counts were made from 10 tables in the bivium and 10 in the 
tiivium of each specimen. Without attempting a study of the variation in the 
different parts of the table in individual Holothurids, the determinations for the 
species were made from the whole 130 dorsal and 104 ventral tables. 
TABLE XVIII. 
Tables of Biviam and Trivium. 
Disc 
Crown 
Number 
of Peri- 
pheral 
Holes 
Number 
of 
Spines 
Diameter 
Height 
Number 
of 
Teeth 
Diameter 
of Hole 
Diameter 
not includ- 
ing Teeth 
Diameter 
including 
Teeth n. 
Dorsal 
Mean 
Standard 
Deviation 
CoetRcient of 
Variation 
Range of 
Variation 
5-746 
+ -149 
2-523 
+ -106 
43-909 
± 1 -837 
0-13 
-907 
+ -091 
1 -883 
+ -079 
199-21 
± -833 
0—10 
50-210 
+ -351 
5-940 
+ -248 
11-830 
± -490 
35-2-67-2 
54-150 
+ -529 
8-945 
+ -374 
16-510 
± -690 
32-3—72-6 
12-177 
+ -064 
1-078 
+ -045 
8-849 
± -370 
8—16 
7-220 
+ -140 
2-340 
+ -088 
32-41 
±1-36 
3-2—12-8 
18-720 
+ -150 
2-534 
+ -158 
13-510 
± -570 
12-8—22-4 
38-590 
+ -106 
5-176 
+ -217 
13-420 
± -570 
25-6—54-4 
Ventral 
Mean 
Standard 
Deviation 
Coefficient of 
Variation 
Range of 
Variation 
4-654 
+ -144 
2-170 
+ -091 
46-617 
±2-180 
0—10 
-346 
+ -075 
1-150 
+ -044 
332-29 
±1-554 
1—6 
42-539 
+ -524 
5-342 
+ -140 
12-550 
± -590 
32-0-57-6 
45-610 
+ -660 
9-934 
+ -465 
21-770 
± 1 -020 
24-3—81-0 
11-692 
+ -092 
1-394 
+ -065 
11-923 
± -558 
6-14 
6-560 
+ -013 
1-920 
+ -092 
29-260 
± 1 -400 
0—9-6 
18-750 
+ -241 
2-400 
+ -115 
12-800 
± -610 
9-6—22-4 
35-904 
+ -388 
6-012 
+ -281 
16-740 
± -780 
22-4—51-2 
1 . Disc. 
The form of the disc has the following distributions: dorsal; — square, 81 
(62-3 7J (PI. IV. Figs. 54 and 66) ; irregularly square, 8 (6-2 %) (Figs. 53 and 73) ; 
round, °7 (5-4%) (Figs. 60 and 72); irregularly round, 12 (9-2 "/J (Figs. 62 and 
74); irregular, 22 (16-9 7 J (Figs. 52, 55 and 70): ye/i^ra^ /—square, 58 (55-8 7J; 
irregularly square, 14 (13'5 °/^) ; round, 3 (2-8 °/„); irregularly round, 13 (12-5%); 
irregular, 16 (15'3 7o)- These types run into one another, and when the irregular 
variations are added to their respective types the form of the disc is practically 
the same in both bivium and trivium. 
The mean number of peripheral holes in the disc, in the dorsal tables, is 6*, 
with a range of 0 — ^13; in the ventral, 5 with a range of 0 — 10 (Figs. 49 — 74). 
In the series of variates there is a typically symmetrical form with 4 secondary 
holes (Figs. 54, 64 — 67), one at the base of each vertical rod (Fig. 49). When 
* In the discussion of the tables the nearest whole numbers are used. 
