Fig. 
6. 
PLATE I 
Figures of Holopus from various authors 
The type specimen of Jfolopus rangti, from Martinique; No. 1 
in the lst of known specimens (from d’Orbigny). 
The same specimen; transverse section of stalk to show the in- 
ternal structure (from d’Orbigny). 
bo 
The type specimen of J/olopus rawsoni, from Barbados; No. 
in the list of known specimens (from Gray after Rawson). 
A young specimen from Barbados only 8 mm. in height; No. 4 
in the list of known specimens (from P. H. Carpenter) x 5. 
K 
Another view of the same specimen (from P. H. Carpenter) » 
1%, 
The largest specimen examined by Carpenter, from Barbados; 
No. 5 in the list of known specimens (from P. H. Carpenter) 
x 1%. 
