No. 478] 



OHIO NAIDID^ 



tral bundle consisting of 4 biuncinate setje (110 /O with subequal 

 teeth. Length 2.2 mm. Number of segments in an individual 18. 

 Cedar Point, Sanduskv, Ohio. 



Two specimens belonging to this species were noted. Budding 

 was not observed. Several Peritrichous ciliates {Rhabdosti/la sp., 

 length 50 //, diameter 19 //) were observed fixed to the anterior 

 end of one of the individuals, the peduncle being less than 2 /( in 



Nais parviseta n. sp. 



Prostomium narrow, slightlv acute. Eyes ])resent, round or 

 slightly oval. Digestive tract 

 differentiated into a distinct /. \-pr 



pharyn-c which gradually ^ j 

 merges into an esophagus. < 



Stomach dilation scarcely j)er- ^ - \z — 



ceptible. Dorsal bundle be- - M\ V-^ 



ginning on the (ith scirnieiit, - ~ 

 composed of 1 cnpillifoi'ui, • ' 

 subequal to diaiiicicr of body, - - ~ 



