cuar.1v.] THE CRUISES OF THE ‘PORCUPINE’ 175 
junction. The ventral arm-plates are entirely absent. 
This is a large handsome star-fish. I am not aware 
of any fossil form which can be referred to the same 
genus; but it looks like a. thing which might be 
expected to have congeners in the upper chalk. 
Holothurids were not frequent, but the singular 
little Lchinocucumis typica of Sars, covered with 
spiny plates, turned up in every sifting. 
Fig. 35.—Amathia carpenteri, NorMAN. Once anda half the natural size. (No. 47. 
Crustacea are numerous ; but we have here entirely 
lost the gigantic Arctic amphipods and isopods of 
the ‘cold area.’ A pretty little stalk-eyed form 
Dorynchus thomsoni, NorMAN (Fig. 34), small and 
delicate, and very distinct from all previously de- 
scribed species of the genus, is very widely diffused. 
