ENTOMOSTRACA OF MINNESOTA. 307 
Cypria mons (Chambers). 
PLATE LXXXI, Fias. 6-12. 
? .—Cypris mons Chambers (41), pp. 153-154, Fig. 3. 
1887.— ‘* mons C. L. Herrick (86), p. 32. 
Length 0.70 mm. Height 0.45 mm. 
‘‘Ovoid; tumid; highest immediately before the middle. Length 
gz; inch; height 3,. Dorsal margin regularly arched, sloping more 
rapidly behind the highest point than before it. Extremities rounded; 
the anterior widest ventral margin very slightly sinuated. Seen from 
above, ovate, but less tumid than Cypridopsis vidua as figured by Baird 
and Brady (Brit. Ent. and Trans. Linn. Soc.). But little or not at all 
narrowed in front; widest a little behind the middle. Lucid spots 
seven, near the middle of the valve; the three lower ones in a line and 
small; one of them very small. Valves white, shining smooth, with 
numerous almost confluent puncta. The sete of the lower antenne 
extend beyond the apex of the claws, and the articulate appendage of 
the third joint has its apex swollen or enlarged. Superior antenne 
with two long and one short seta from the end of the fourth joint; two 
from the end of the fifth joint; four long ones from the end of the 
sixth; two long and two short from the end of the seventh (there are 
also other short sete on the different joints). The last joint of the 
inferior antenne is small, almost rudimentary, bearing a single large 
claw. (Indeed, it seems to be bifid, with a claw from each branch.) 
There are three other claws articulated to the end of the penultimate 
joint, from which also arise four sete shorter than the claws; two 
moderately long sete arise from about the middle of the fourth joint 
above, and three longer ones below; the usual fascicle of five long and 
one short sete from the third joint, just behind which is a bunch of 
short cilia and another bunch on the under side. Abdominal ramus 
straight, slender, with two claws, one under the other. The mandib- 
ular palpus, with branchial appendage and two large plumose and 
one simple sete from the end.’’ (Chambers. ) 
I have never seen specimens of the above. It is certainly very 
closely related to Cypria opthalmica (Jurine), yet it seems to be dis- 
tinct. 
Habitat: Pond on Mount Elbert, Colorado; altitude 11,000 feet. 
(Chambers, 41.) 
Cypria inequivalva Tumer. 
PLATE LXVIII, Fias. 1-8. 
1893.— Cypria inequivalva C. H. Turner (213), pp. 6-8; Pl. I, Figs. 1-8. 
1894.— ‘* inequivalva C. H. Turner (215), p. 14. 
1894.— ‘* inequivalva C. H. Turner (216). 
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