ORDER BRANCHIOPODA — CYTHERINA. 65 
(EXTRA-LIMITAL.) 
C. agilis. (Hatpeman, Proc. Acad. Nat. Sc. 1841.) Height rather more than half the leneth. Base 
subrectilinear. Color, light ochraceous. Ditches. Lancaster county, Pennsylvania. 
C. simplex. (Ip. Ib.) Elongated, nearly straight; both ends alike. The same locality with the 
preceding. 
Genus Cytuerina, Lamarck. Form of the preceding ; antenne two, hairy throughout their length; 
head concealed. Feet eight, chiefly marine. 
C. bifasciata. (Say, 1c. p. 439.) Valves clothed with minute dense hairs. Antenne as long as the 
valves, Color, greenish testaceous tipped with black; two black bands; feet white. Length, 0-05. 
Pools of fresh water. Georgia and Florida. 
Genus Dapunia, Muller. Shield subunivalve, opening longitudinally on one side. Two branched 
antenne, or anterior feet, arising from the sides of the neck. Eight to twelve feet. Fresh- 
water pools. ¢ 
D. angulata. (Savy, |. c. p. 440.) Sides striate with numerous parallel minute oblique lines; hind 
edge of the body with a prominent angle in the middle. Antenne with four filaments on the upper 
and five on the lower branch. Color, white or red. Length, 0-1. Stagnant water in the forests 
of the Southern States. 
D. rotundata. (Ip. |, c.) Body rounded behind. Upper antenne three-branched: a small spine 
above at the joints; lower, five-branched. Color, white. Length, 0-05. Same locality with the 
preceding. 
Fauna — Part 6°. g 
