12 TWELFTH AlfNUAL REPORT. 



are uncertain (Chilodontidae?); the specific name may, perhaps, be 

 safely applied as follows: 



pedicularis, sp. n. 



Cragin notices the occurrence in American species ot Cyclops of 

 Lagenella mohilis, Rehberg. This gregarine (?) was found by him 

 at Cambridge, inhabiting in large numbers the digestive tract of 

 species of Cyclops, and has since then been observed in Minnesota. 



