Laguna Marine Laboratory 99 
discovery in the towings was almost accidental. We spent much 
time looking for others but with no success. The spine-bearing pro- 
cesses with which this species is covered serve to distinguish it from 
all other species of the genus. 
In placing these last two species in Ammothella, I have followed 
Cole, who raised the sub-genus Ammothella (Ammothea—part), of 
Verrill, to generic rank because of the trunk being ‘‘usually propor- 
tionately broader and distinctly segmented, the chelifori three- 
jointed, and the palpi nine-jointed.’’ I hope that this brief explana- 
tion will show why they are not Ammothea proper, and avoid con- 
fusion. The multi-spine bearing processes on A. spinosissima may 
remind one of those on a Nymphopsis figured by Loman, Plate XIII 
of Siboga-Expeditie XL, but the arrangement of these processes, as 
well as generic characters, show that there can be no possible con- 
nection. 
