OF DENISON UNIVERSITY. 21 



from its distally directed apex arises the terminal claw. The 

 terminal claw is slender and long. It is longer than the com- 

 bined lengths of the last three joints and the distal portion is 

 flexuose. 



The fourth joint of the second foot [fig. 30] is very ob- 

 scurely divided into two joints, so that the second foot appears, 

 under a high power, to be composed of six joints. The foot 

 terminates in two long flexuose filaments and one shorter fila- 

 ment. 



The post-abdomen [fig, 28] is of medium size. The terminal 

 claws are slender, pectinated and curved. The terminal claw is 

 about half as long as the abdominal ramus. The adjacent claw 

 is a little shorter than the terminal claw. The filament in the 

 caudal margin is about ^ the length of the ramus from the dis- 

 tal extremity of the post-abdomen. 



Habitat: Atlanta, Ga., December 1893. Abundant in 

 the shallow ponds near South River. 



Candona delawarensis, sp. n. 



IPl. VIII, fig. 3S-40.-\ 



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-reniform, 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 extrem- 

 ity 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. 



