PLATE 22. 
1-26. Echinonéus cyclostomus LEsKE. 
1-16. Valves of globiferous pedicellariae. 
1.— Stalk and head, 0.74 mm. long, from left anterior ambulacrum, one third way between actinal 
system and ambitus. 
2.— Pedicellaria, 0.36 mm. valve C in centre, from right posterior interambulacrum, midway between 
actinal system and ambitus. 
3.— Valve A, 0.38 mm. interior view. ] 
4.— Valve B, 0.37 mm. interior view. | 
5.— Valve B, 0.37 mm. interior view, profile. } Of a single pedicellaria, same as Figure 1. 
6.— Valve C, 0.36 mm. interior view. | 
7.— Valve C, 0.36 mm. exterior view. J 
8.— Valve A, 0.26 mm. exterior view. 
9.— Valve C, 0.26 mm. interior view, from right posterior interambulacrum, | same pedicellaria. 
ambitus. 
10.— Valve B, 0.34 mm. interior view. 
11.— Valve C, 0.32 mm. exterior view, from right posterior interambulacrum, Vise pedicellaria. 
toward apical system. J 
12.— Valve B, 0.32 mm. interior view, from right posterior interambulacrum, near genital plate. 
1-12. Dry specimen with spines 34 mm. long. Lord Howe Island. 
13.— Valve A, 0.28 mm. interior view, profile. | 
14.— Valve B, 0.27 mm. interior view, from right posterior interambulacrum. Baine pedivellnne 
Alcoholic specimen measuring 19 mm. long. Fakarava Island, . 
Paumotu Islands. 
15.— Valve B, 0.31 mm. interior view. 
16.— Valve C, 0.30 mm. interior view, from right posterior interambulacrum, USamie peritcelireeel 
near apical system. Alcoholic specimen, with spines measuring 30 | i 
mm. long. Barbados (?). J 
17-26. Valves of tridentate pedicellariae. 
17.— Head and stalk, 0.51 mm. from left anterior interambulacrum, one third way between actinostome 
and ambitus. Dry specimen, with spines measuring 30 mm. long. Lord Howe Island. 
18.— Valve B, 0.17 mm. interior view. 
19.— Valve B, 0.17 mm. interior view, profile. 
20.— Valve C?, 0.17 mm. interior view. 
21.— Valve C?, 0.17 mm. exterior view from anal system, near the inter- 
ambulacrum. Dry specimen, with Spines measuring 34 mm. long. 
Lord Howe Island. 
22.— Valve B, 0.15 mm. interior view, from anal system. Alcoholic specimen, measuring 10 mm. long. 
Makemo Island, Paumotu Islands. 
23.— Valve A, 0.17 mm. interior view, from adoral end of anal system. Alcoholic specimen, measuring 
18 mm. long. Makemo Island. 
24.— Valve C, 0.31 mm. exterior view, from adoral end of anal system. 
25.— Valve C, 0.23 mm. exterior view, from aboral end of anal system. 
26.— Valve A, 0.31 mm. interior view, from aboral end of anal system. 
f Same valve. Same specimen as Figure 17. 
Same valve. 
24-26. Alcoholic specimen, with spines measuring 26 mm. long. Barbados (?). 
The enlargement of Figures 2 to 16 is the sameas Plate 18. Figures 18 to 26 are on a slightly larger, 
but not identical scale; Figures 1-17 are smaller. 
