ENTOMOSTRACA OF MINNESOTA. 337 
length and the width is less than the height. In the male the height 
is about one-third of the length. The color is yellow, with two green 
blotches, one on each side, in front of the middle. These patches of 
pigment are on the animal but show conspicuously through the trans- 
lucent valves. The female carries her young in the enlarged caudal 
portion of the valves. These are white and show distinctly through 
the valves. 
Viewed from the side the shell is oblong, depressed in front, broad- 
est caudad of the middle. The two extremities are rounded, the 
cephalic end is narrow, while the caudal one is broad. 
Viewed from above the shell is ovate-acuminate, widest near the 
caudal extremity. The cephalic extremity is pointed while the 
caudal is broad and notched where the two unequal valves meet. 
The antennules are stout and appear to be composed of only five 
joints. In this respect as well as in the arrangement of the sete this 
member differs from the corresponding member of D. stevensoni. 
The antenne are stout and are composed of five joints. The long 
terminal claws are as long as the combined lengths of the last three 
joints. The antepenultimate joint bears a conspicuous one-jointed 
appendage which terminates in one long and one short filament. 
Here we have another marked difference between this species and D. 
stevenson. 
The mandible bears a three-jointed palp, to the termiral joint of 
which is appended a lamina bearing several long curved filaments. 
The second maxilla bears a leg-like palp. The first foot is stout 
and five-jointed. Thesecond foot is not bordered by a fringe of hairs, 
For arrangement of the sete consult the figures. 
The second foot consists of five joints; the terminal claw is longer 
than that of the first foot. Like the first foot, none of its members are 
bordered with short hairs. For the arrangement of set consult 
the figures. 
The abdomen terminates in a pointed process. 
Habitat: The only specimens yet found were collected in a sand 
bottom reservoir at Atlanta, Georgia, Sept. 1, 1894. This reservoir is 
about three miles in circumference and is fed by creeks which arise a 
short distance off at the watershed of the state. 
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