14 GEORGE BUSK. 
species belonging to an abyssal genus, which I propose to 
name Angularia, a web-like expansion at the angle of most 
of the bifurcations, which is sometimes of considerable 
extent, and apparently homologous with that at the base of 
Kinetoskias. In this case, however, the web seems to be 
formed by an expansion and reduplication of a general 
epitheca, which is strongly developed in this and other of 
the abyssal forms. 
