58 REPORT OF NEW JERSEY STATE MUSEUM. 



fleeted downward. Sometimes second line seen to emerge just 

 above end of fornices and pass over eye in wide curve. Post- 

 abdomen truncate behind, with long terminal simple claw, four 

 others graduated down follow close behind. Color in life largely 

 transparent, though with rather brownish or russet tints. Length 

 3 mm. 



Remarks. — The above description is from examples I obtained 

 in a small rain-pool of fresh-water on the brackish tidal marsh 

 of Dennis Greek, at South Dennis, in Cape May County, April 

 5th, 1912. No other animal life was discovered associated, nor 

 were any of Burycerciis in the similar but larger numerous pools 

 all about. The pool in question was merely a depression in an 

 unfrequented path on the meadow, and in size was scarcely 

 larger than a good-sized wash basin. In a few hours it had 

 dried up entirely, all of Bitrycercus having disappeared or 

 perished! During life these small animals appeared like small 

 seeds moving about the bottom from place to place, swimming 

 more or less direct. They were easily located with the naked 

 eye. Diligent search in many pools about the flooded adjacent 

 marshy region failed to reveal any other examples. 



The species is said to range all over Europe and the eastern 

 United States, though it has never before been recorded from 

 New Jersey. Turner reports it from Kent County, in Delaware. 



Sub-Family Lyncein^. 



Intestine coiled. Vent near end of post-abdomen. Opening 

 of vas deferens nearly terminal. No anterior caeca, but usually 

 a single anal diverticle of intestine. Rarely or never more than 

 two embryos produced at once. 



Genus CHYDORUS Leach. 



Chydorus Leach, Encyclop. Brit. Suppl. (Annulosa) 1816, p. 406. Type 

 Lynceus Sphcericus Miiller, monotypic. 



Form globose, not obviously truncate behind. Head ends in 

 sharp, long curved beak, which lies close upon anterior margins 



