104 THREE CRUISES OF THE “BLAKE.” 
ginal plates, its ventral plates allying it to the Asterinz, finds 
its place between it and the Astropectinide. 
RR 
Fig. 380. — Ctenaster spectabilis, 3. (Perrier.) 
In regard to the geographical distribution of starfishes, it was 
interesting to find in the deep waters of the Caribbean distriet 
the Northern Atlantic genera Cribrella, Solaster, Pedicellaster, 
and Brisinga. 
Fig. 381. — Radiaster elegans. 4. (Perrier,) 
