C. L. Edwards 
245 
slight elevations, " warts," or in other cases from spots, or rings, differing in 
colour from the surrounding portions. For the body the mid-dorsal and lateral- 
dorsal regions correspond to the similar regions of the bivium. The trivium is 
often sharply marked off and occupies about two-fifths of the circumference of the 
animal. The mid-dorsal and lateral-dorsal regions are not always to be differen- 
tiated. Sometimes the differing lateral colour is along the dorsal edge of the 
side. " Dots " are minute bits of colour up to 2 mm. diameter ; " spots " are 
from •2mm. to 1cm. in diameter, while "blotches" are larger areas often 
extending over a considerable portion of the surface. Light colour like cream 
is often due to heaps of spicules visible through the skin. 
The colouration is very variable as given in Table VII. and represented in 
Plate II. for the adult and in Plate I. for the young. The general statement 
of colouration is given in a brief and untechnical form by grouping the following 
TABLE VII. 
Ambulacral Appendages 
Body 
Dorsal 
Stalks 
Dorsal 
Ends 
Ventral 
Stalks 
Ventral 
Ends 
Origin 
Mid- 
Dorsal 
Lateral- 
Dorsal 
Ventral 
1 0 
lo 
6* 
"lo 
6< 
0) 
lo 
cri 
CP 
p-t 
°l 
lo 
lo 
Adult, 
73 
Specimens 
Number of 1 
Colours ) 
Browns ... 
Creams ... 
Grays 
Black ... 
White ... 
21 
67^ 
11 
13 
73-7 
12-1 
14-3 
15 
67" 
5 
1 
92-0 
6-9 
1-4 
22 
38'' 
8 
25 
1 
5 
49-4 
10-4 
32-5 
1-4 
6-5 
18 
70'= 
4 
3 
91-0 
5-2 
3-9 
10 
11 
1 
2 
4 
1 
58-0 
5-3 
10-5 
21-0 
5-3 
24 
90d 
10 
14 
79-1 
8-7 
12-3 
28 
106'= 
24 
16 
1 
72-1 
16-4 
10-9 
■7 
20 
56' 
34 
8 
1 
56-0 
34-0 
8-0 
ro 
Young, 
45 
Specimens 
Number of ) 
Colours ) 
Browns ... 
Creams ... 
White ... 
Grays 
Black ... 
15 
40S 
19 
4 
3 
1 
60-0 
28-4 
6-0 
4-5 
1-5 
15 
54^ 
6 
6 
81-7 
9-0 
9-1 
14 
278 
19 
6 
9 
1 
43-5 
30-7 
9-7 
14-5 
1-6 
15 
49' 
5 
1 
89-0 
9-1 
1-8 
6 
5j 
1 
1 
13 
25-0 
5-0 
5-0 
65-0 
26 
61k 
28 
4 
63 
1 
38-7 
17-9 
2-5 
40-0 
•6 
25 
651 
34 
5 
61 
3 
38-7 
20-3 
3-0 
36-5 
1-8 
21 
28 
27 
4 
32 
2 
30-5 
29-1 
4-3 
34-5 
2-2 
* Dark tints ; seal, clove, predominant. ^ Tints, well distributed ; seal, sepia and drab 
about alike. "= Tints, distributed ; seal, clove, sepia and clay-colour well marked. <• Dark 
tints ; seal, clove, Vandyke prominent. " Seal, clove, sepia. Front's, Broccoli, drab and cinna- 
mon prominent. ' Tints well distributed ; seal, clove, drab and cinnamon more pronounced, 
s Light tints ; Front's and clay-colour prominent. ^ Light tints ; cinnamon and especially 
clay-colour prominent, j Seal, cinnamon and clay-colour. ^ Tints well distributed ; seal, 
clove, sepia, Vandyke, Front's, Isabella and clay-colour the more prominent. ' Seal, clove, 
Prout's, Isabella and clay-colour prominent. 
I 
