254 
Holothuria Jloridana 
22nd day, and the 4th on the 38rd da}', all 3 from, and to the left of, the mid- 
ventral radius. On the 24th day the 1st pair of papillae bud ventral from the 
anterior ends of the dorsal radii and will become the first of the ivarts described 
below. On the 30th day the first pair of pedicels appear from the lateral- ventral 
radial canals, one on each side. Not before the 40th day does there appear a 
pedicel from the mid-ventral radius to the right. Gradually the number of ambu- 
lacral appendages increases until on the 75th day there are 30 developed pedicels 
and papillae and GS buds, mostly arranged in rows along the radial canals. 
In the adult this arrangement in radial rows is obscured by the presence of 
fairly evenly distributed interradial appendages. The smaller young individuals, 
as Pourtales, 1851, p. 12, remarks, show the radial rows more distinctly. In 3 of 
the smallest of the young of my statistical series the appendages were counted with 
the following result : — 
Serial 
Number 
Volume 
c.c. 
Mid- 
Ventral 
Eadius 
Right 
Ventral 
Radius 
Left 
Ventral 
Radius 
Right 
Dorsal 
Radius 
Left 
Dorsal 
Radius 
Inter-radial 
in Dorsal 
Region 
Totals 
10 If. 
•26 
22 
21 
22 
6 
6 
77 
lOS 
•46 
23 
23 
22 
10 
9 
12 
99 
105 
TOO 
30 
30 
30 
12 
12 
36 
150 
c. Warts. 
Pourtales, 1851, p. 12, noted that of the dorsal papillae the two rows situated 
near to the ventral surface, are always very conspicuous. " They are erectile, like 
the suckers, and possess a canal, which communicates with an internal vesicle." I 
have adopted the name tvarts for the more or less prominent conical projections 
usually formed from an accumulation of rosettes, perforated plates and their 
developmental stages. The warts nearly always bear a papilla ; occasionally more 
than one. They appear along the sides, having arisen from the right and left 
dorsal radii or sometimes they are scattered over the back. Being made of 
spicules, the warts are of light colour and generally stand out against the darker 
background. Where warts are not noted it is probable that some are present but 
obscured by an increased immber of spicules in the skin, or by dark colour. 
TABLE XIV. 
1. Distribution of Warts. 
Right 
and Left 
Right 
Only 
Left 
Only 
Scattered 
on Bivium 
Traces 
None 
Totals 
Adult ... 
20 
1 
25 
27 
73 
Young . . . 
35 
1 
2 
1 
5 
1 
45 
