ENTOMOSTRACA OF MINNESOTA. 311 



The five large sette on the antepenultimate joint of the antennae 

 extend way beyond the tip of the terminal claws (Fig. 9). The distal 

 extremity of each seta is plumose. According to Professor Brady ^ in 

 Cyjiris ovum (Jurine) only two of the natatory seta3 of each antenna are 

 long. In this respect Gi/pris 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. 11). 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 sette; one, about the same length as the joint is directed back- 

 ward, the other is very short and is directed forward. 



The short post abdomen is about twice as long as its terminal claws. 

 The stout claws are feebly curved. 



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

 Professor L. D. Hileland collected in Jones' Creek, Kent County, Dela- 

 ware, March 31, 1891. 



Cyclocypris niodesta (Herrick.) 



Plate LXXII, Figs. 5, 5* 5a, etc. 



Ci/pris modesta C. L. Herrick (86), p. 28; PI. IV, Fig. 5. 



This species has never been seen by me. Probably its nearest ally 

 Is Cypria mequivalva Turner. The figures as well as the text of this 

 species are taken from Professor Herrick's work (86). 



"Shell sub-reniform, greatest height behind the middle, upper out- 

 line somewhat obliquely truncate, especially in the male ; color yellow- 

 ish, scarcely maculate, nearly smooth. Antennae short, with long 

 non-plumose filaments, two from the apical and four from the penulti- 

 mate segment very long, others half as long: second antennae with 

 three toothed claws on the penult segment, one together with three 

 smaller ones, on the apical, antepenult segment armed only with small 

 bristles, preceding one with six: long setae exceeding the claws; first 

 foot slender, apical segment long conical, with a long serrate claw and 

 bristle, other setae short ; second foot (in male) with a short terminal 

 segment armed with two very long setae and one shorter one; caudal 

 stylets very slender, with a terminal claw, a sub-terminal claw some- 



* Recent British Ostracoda, p. 373. 



