ENTOMOSTRACA OF MINNESOTA. 299 



The absence of natatory setae from the antennae prevents the mem- 

 bers of this genus from swimming. They creep along the bottom and 

 frequently burrow in the mud or sand. 



Candona fabaeforniis (Fischer.) 



Plates LXXV, Figs. 10, 11; LXXVI, Figs. 6, 8. 



1851. — Cypt is fabieformis Fischer (64), p. 146; PI. Ill, Fig. (3-16. 

 1853. — Candona fahsefonnis Lilljeborg (118), p. 207. 

 1870.— " diaphana Brady and Robertson (33), PI. V, Figs. 1-3. 

 1889.— " fabseformis Brady and Norman (31), p. 103; PI. IX, Figs. 1-4. 

 1891.— " fabseformis Wenzel Vdvra(221), pp. 45-48; Figs. 6, 2; Figs. 12, 19; 

 Fig. 13. 



Length 1.03 mm. Height 0.49 mm. Width 0.38 mm. 



The shell is more than twice as long as high and nearly three times 

 as long as wide. The shell being pellucid, the color of the enclosed 

 body shines through the lorica and gives it a greenish yellow tint. 



Viewed from the side the shell of the female is subreniform; great- 

 est height situated behind the middle; obtusely and evenly rounded 

 in front, obliquely rounded behind. Ventral margin sinuated. 



Viewed from above the shell is compressed, tapering equally 

 and suddenly to the two pointed extremities; sides almost parallel. 

 E^ear each extremity a process from the left valve overlaps the right. 

 The projection near the caudal extremity is much more pronounced 

 than the other. 



The antennae are stoutj the smooth terminal claws are slightly 

 curved and are not quite as long as the combined lengths of the last 

 three joints. Natatory setae are absent. For the arrangement of setae 

 consult the figures. 



The second foot is six-jointed. 



The abdominal rami are strong. In the female they are curved. 

 The terminal claws are stout, curved and pectinate; the shorter claw 

 is a little more than three-fourths as long as the other. The longer 

 claw is about half as long as the entire ramus. Habitat: The 

 only specimens yet found in America were found in a small 

 spring-fed water tank on Clark University campus, Atlanta, Georgia, 

 Aug. 30, 1894. 



Candona acuminata (Fischer ) 



Plate LXXI, Fig. 34. 



\8b\.—Cypris acuminata '&. Fischer (64), p. 148; PI. IV, Figa. 12-16. 



1854.— " " Zenker (238), p. 74; PI. II, D. 



1889.— " " Brady and Norman (31), p. 104; PI. IX, Figs. 9-10; PJ. X, 



Figs. 5-6. 

 1894.— " " C. H. Turner (21."^), p. 19; PI. VIII, Fig. 34. 



