OF DENISON UNIVERSITY. 



15 



The somewhat translucent shell is hispid and very tumid, 

 being about as broad as it is high. 



Viewed from above the shell is ovate with rounded extrem- 

 ities. The eye, which is situated near the cephalic extremity of 

 the animal is easily seen through the shell. 



The five large setae on the antepenultimate joint of the an- 

 tennae extend way beyond the tip of the terminal claws, [fig. 9] 

 The distal extremity of each seta is plumose. According to 

 Prof. Brady^ in Cypris ovum (J urine) only two of the natatory 

 setae of each antenna are long. In this respect Cypris ovum 

 (Jurine) differs from the specimen under consideration ; but 

 since they are similar in all other features I consider them to be 

 of the same species. 



The terminal joint of the mandibular palp is short. The 

 terminal claws of this palp extend to the tip of the mandibular 

 teeth. 



The slightly curved terminal claw of the first foot is slender 

 and is about as long as the combined lengths of the three distal 

 joints. 



The terminal joint of the second foot is about two-thirds as 

 long as the fourth joint, [fig. i i] The long, slender, backwardly 

 directed seta upon the distal extremity of this joint is longer 

 than the combined lengths of the three distal joints. This joint 

 bears at its apex two other setae ; one, about the same length 

 as the joint is directed backward, the other is very short and is 

 directed forward. 



The short post-abdomen is about twice as long as its termi- 

 nal claws. [PI. VII fig. 10] The stout claws are feebly curved. 



Habitat : I have only seen three specimens of this species. 

 These Prof. L. D. Hileland collected in Jones' Creek, Kent 

 Co., Delaware, March 31st, 189^1. 



U<ecent British Ostracoda, p. 373. 



