ENTOMOSTRACA OF MINNESOTA. 303 



The palp of the mandible is stout, the terminal joint of the same is 

 short. The blade of the female mandible is stouter than that of the 

 male. 



The first maxilla bears a large leaf-like branchial appendage. 



The second maxilla of the female has the usual generic form, the 

 palp being two-jointed and bearing at its tip three short setse. In the 

 male the palp of the second maxilla is peculiarly modified and the 

 palp of one side is larger than the palp of the other. 



The first foot is of the usual type. 



The second foot, as is always the case in this genus, bears at its tip 

 two long and one short setse. 



The post-abdomen of the female is quite stout and bears at its tip 

 two strong claws. This appendage is strongly curved. One claw is 

 only about two-thirds as long as the other. 



The post-abdomen of the male is straighter than that of the female, 

 but its borders are more irregular. The terminal claws are slender 

 and of about the same size. 



The verticillate sac of the male bears seven whorls of chitinous 

 spines. 



Habitat: Fayette county, Georgia. These specimens were found 

 in the weedy shallows of a large millpond near Fayetteville, June 

 21, 1894. 



Gandona delawareusis Turner. 

 Plate LXXI, Figs. 35-40. 

 1894.— Candona delawareusis C. H. Turner (215), pp. 21-22; PI. VIII, Figs. 35-40. 



Length 0.95 mm. Height 0.54 mm. Width 0.43 mm. 



The color of this form is greenish yellow variegated with blotches 

 of brown. 



Viewed from the side (Fig. 39) the shell of the female is sub-reni- 

 form, the greatest height being about two-thirds the length of the 

 animal from the cephalic extremity of the shell. The cephalic, dorsal 

 and caudal margins are convex. The ventral margin is undulating, 

 concave in the middle. 



Viewed from above (Fig. 37) the shell is an elongate ellipse with its 

 greatest width in the middle. The extremities are pointed. The 

 hinge-line is sinuous. Near the cephalic extremity there is a very 

 pronounced sinuosity. 



Viewed from below (Fig. 38) the general outline is the same as when 

 viewed from above. The contact line is more sinuous than the hinge- 

 line. 



Viewed from the end the shell is elliptical. It is widest in the 

 middle and the extremities are rounded. 



