804 Wisconsin Academy of Sciences, Arts, and Letters. 
The spines on the first basal segments of the fifth feet (fig. 1) 
are moderately long and slender. The second segment of the 
right foot is a little longer than wide; the lateral hair is of 
moderate length and situated on the distal third; there is a 
blunt, tooth-like process on the anterior surface near the inner 
margin. The first segment of the right exopodite is short and 
broad and ends in a blunt process at the outer distal angle; 
there are two tooth-like processes on the posterior surface near 
the inner distal angle, the proximal one being the larger. The 
Fig. 1. 
Fifth foot of male. X 190. 
Fig. 2. 
Fifth foot of female. 
second segment is elongated, with an obtuse angle near the mid¬ 
dle of the outer margin; the lateral spine originates just beyond 
the angle and it is long, curved, and bears from three to six 
teeth on its inner margin; the terminal hook is-long, slender, 
and curved. The right endopodite is roughly triangular in out¬ 
line, about as long as the inner margin of the first joint of the 
exopodite ; it is ciliated on the inner margin toward the apex. 
The second basal segment of the left foot is about one and a 
third times as long as wide; the lateral hair on the outer margin 
is about a quarter of the distance from the distal end. The 
first joint of the left exopodite is a little longer than wide and 
is setose on the inner margin. The second joint has a ciliated 
pad on its inner margin and is terminated with a finger-like 
