16 



PLANTS IN PONDFISH CULTUEE. 



Table 2. — Food Content of Largemox'th Blacic Bass (Micropterus sal- 

 MoiDEs), Advanced Fry and Fingerlings, in Certain Ponds at Fairport, 

 Iowa. 



o Bosmina and Volvox association. 



bScapholcberis and Mougcotia association. 



c Chiefly Orthocladiusand Cricotopu.ssp., Tanypus decoloratus Mall, and Pseudochlronomusrichard.soni 

 Mall. The idontiflcations of chironomids were made by Dr. R. A. Mutkowski and Dr. O. A. Johannscn. 



d Mainly Dyliscid beetles. 



e From H. F. Sohradieck's unpublished reports. The larva; in the food content were identified as 

 Orthocladius nivoriundus. The algae upon which these chironomids had fed consisted of 100 per cent 

 Mougeotia genuflexa. 



